Contributions
Contributions at International Meetings
- "Radially Symmetric Solutions for a Class of Non-convex Problems in the Calculus of Variations",
presented at 1st European Conference on Elliptic and
Parabolic Problems Pont-[â]-Mousson France, June 17-21, 1991.
- "Radial Solutions for some Classesof Non-convex Problems in the Calculus of Variations",
presented at International Conference of Differential Equations
EQUADIFF'91, Barcelona-Spain, August 26-31, 1991.
- "The Lack of Lower Semicontinuity
in the Calculus of Variations", presented at First
Chilean-CEE School on Optimization and Third Franco-Latinoamerican
Conference in Applied Mathematics, Santiago-Chile, August 1992.
- "Applications
of a duality theory in non-convex optimization", invited conference at Seminario en
Optimización Matemática, Universidad Nacional de
Ingeniería, Lima-Perú, July 5-9, 1993.
- "Duality in non-convex
optimization"(in Spanish), invited minicourse (a serie of
three lectures) delivered in occasion of the III Congreso de
Matemática Capricornio (COMCA), Antofagasta-Chile, August
4-7, 1993.
- "El rol cd la convexidad en la elasticidad finita", Invited Conference delivered in occasion of the VII Coloquio Peruano de Física Matemática, Lima-Perú, August 1993.
- "A constructive method for
selections from the subdifferential of a convex function" (In
Spanish), invited conference delivered in occasion of the IV
Encuentro de Matemáticas y sus Aplicaciones, Facultad de
Ciencias, Escuela Politécnica Nacional (EPN), Quito-Ecuador,
July 04-08, 1994.
- "C1-selections from
the subdifferential of a convex function", presented at International
Congress of Mathematicians, E.T.H. Zürich-Swizerland, August
3-11, 1994.
- "Existence and non-existence in
the Calculus of Variations" (In Spanish), Plenary conference
delivered in occasion of the LXVI Encuentro Nacional de la Sociedad
de Matemática de Chile, Valparaíso-Chile, October
28-29, 1994.
- "An Introduction to the Calculus
of Variations" (In Spanish), invited minicourse (a serie of
three lectures) delivered in occasion of the IX Jornadas de
Matemática de la Zona Sur, Chillán-Chile, April
26-28, 1995.
- "Some Non-convex symmetric
problems in the Calculus of Variations", invited conference
delivered at 2do. Seminario en Matematica Aplicada y
Optimización, Facultad de Ciencias, Universidad Nacional de
Ingeniería, Lima-Perú, October 02-05, 1995.
- "Subdifferentiability with respect to the continuous functions", invited conference
delivered at 2das. Jornadas Catalanas de Matemática Aplicada,
Four Solaire, Font Romeu-Odeillo, France, November 29 - December 01,
1995.
- "Simplified Global Optimality
Conditions for Differences of Phi-convex Functions"(with J.E.
Martinez-Legaz), Conference delivered at V Symposium on Generalized
Convexity and its Applications, CIRM-Luminy, Marseille-France, June
17-21, 1996.
- "Some remarks on the Ekeland
variational principle" (In Spanish), invited conference
delivered in occasion of the V Encuentro de Matemáticas y
sus Aplicaciones, Facultad de Ciencias, Escuela Politécnica
Nacional (EPN), Quito-Ecuador, July 22-26, 1996.
- "Una Introducción al
Cálculo de Variaciones y aplicaciones en Elasticidad Finita",
invited minicourse (a serie of three lectures) delivered in occasion of
the Seminario Nacional de Aplicaciones de la Matemática,
Facultad de Ciencias Naturales y Formales, Universidad Nacional de San
Agustín, Arequipa-Perú, October 14-18, 1996.
- "An attempt to define the
conjugate of set-valued maps and related properties", invited
talk delivered within the cluster session (also Chairman) Generalized
convexity at XVI International Symposium on Mathematical
Programming, EPFL, Lausanne-Switzerland, August 24-29, 1997.
- "Minimizing integral functionals
via Lyapunov-type theorems", invited minicourse (a serie of
three lectures) delivered at 3er. Seminario Internacional en
Matematica Aplicada y Optimización, Facultad de Ciencias,
Universidad Nacional de Ingeniería, Lima-Perú, October
06-10, 1997.
- "Un resultado del tipo Lyapunov
en Cálculo de Variaciones" (with V. Briceño),
talk delivered in occasion of the LXIX Encuentro Nacional de la
Sociedad de Matemática de Chile, Olmué-Chile, October
24-25, 1997.
- "A variational problem in
Mathematical Economics", invited conference delivered in
occasion of the Inauguration of the Instituto de
Matemática y Ciencias Afines (IMCA), Universidad Nacional de
Ingeniería, Lima-Perú, December 08-12, 1997.
- "Optimal solutions to some
variational problems in Consumer theory" (In Spanish),
invited conference delivered in occasion of the VI Encuentro de
Matemáticas y sus Aplicaciones y Cuarta Escuela Andina
de Ecuaciones Diferenciales, Facultad de Ciencias, Escuela
Politécnica Nacional (EPN), Quito-Ecuador, July 06-10, 1998.
- "Optimal solutions to some
variational problems arising in Economics", presented at International
Congress of Mathematicians, T.U. Berlin, Berlin-Germany, August
18-27, 1998.
- "Optimal planning to variational
problems arising in Economics", invited conference delivered
in occasion of the 5ème Congrés
Franco-Latinoaméricain de Mathématiques Appliquées,
Universidad de Chile, Departamento de Ingeniería
Matemática, Santiago-Chile, December 15-18, 1998.
- Chairman of the special session "Optimization
and Calculus of Variations" and invited conference "Pseudomonotone
equilibrium problems and calculus of variations" delivered in
occasion of the IX Congreso de Matemática Capricornio (COMCA),
Antofagasta-Chile, August 04-07, 1999.
- "Simplified optimality conditions
for a difference of vector-valued functions", presented at
(also Chairman) VI International Symposium on Generalized
Convexity/Monotonicity, Karlovassi, Samos-Greece, August
30-September 3, 1999.
- "Noncoercive generalized
equilibrium problems: the quasiconvex case", invited
conference delivered at 4to. Seminario Internacional en Matematica
Aplicada y Optimización, Facultad de Ciencias, Universidad
Nacional de Ingeniería, Lima-Perú, October 04-08, 1999.
- "The conjugate of set-valued maps
and related properties", (jointly with W. Oettli) invited
conference delivered at 4to. Seminario Internacional en Matematica
Aplicada y Optimización, Facultad de Ciencias, Universidad
Nacional de Ingeniería, Lima-Perú, October 04-08, 1999.
- "Non-coercive vector equilibrium
problems: existence of solutions", presented at French-German-Italian
Conference on Optimization, Université Montpellier II,
Montpellier-France, September 04-08, 2000.
- "A unified approach in
optimization theory" (In Spanish), Invited conference
delivered in occasion of the LXXII Encuentro Nacional de la
Sociedad de Matemática de Chile, Punta de Tralca-Chile,
October 26-28, 2000.
- "The equilibrium problems and
variational problems ", invited lectures (two) delivered at
the Summer School, Facultad de Ciencias Físicas
y Matemáticas, Universidad de Concepción,
Concepción-Chile, January 08-19, 2001.
- "Two variational problems in
consumption theory" (In Spanish), invited talk delivered in
occasion of the XV Jornadas de Matemática de la Zona Sur,
Concepción-Chile, April 26-28, 2001.
- "Existence in convex vector
optimization problems and optimality conditions in non-convex
set-valued minimization" contribuited lecture at XXXIV
Workshop on Optimization and Control with Applications,
Erice-Italy, July 09-17, 2001.
- "A unifying approach in
optimization theory and applications", invited lecture
delivered at Tenth International Colloquium on Numerical Analysis
and Computer Science with Applications, Plovdiv-Bulgaria, August
12-17, 2001.
- "Variational problems in
mathematical economics ", Plenary Conference
delivered at XIX Coloquio Nacional de Matemática,
Universidad Nacional de Trujillo, Trujillo-Perú, November 05-10,
2001.
- "Existence theory for finite
dimensional equilibrium problems", invited mini-course (two
lectures) delivered at XIX Coloquio Nacional de Matemática,
Universidad Nacional de Trujillo, Trujillo-Perú, November 05-10,
2001.
- "Radial epiderivatives and
recession function in non-convex vector optimization",
invited talk delivered in occasion of the 6éme
Congrés Franco-Latinoaméricain de Mathématiques
Appliquées, Universidad de Chile, Center for Mathematical
Modeling, Santiago-Chile, December 17-21, 2001.
- "Vector optimization problems:
existence of solutions and optimality conditions", Plenary
Conference delivered in occasion of the XVI Jornadas de
Matemática de la Zona Sur, Universidad Católica del
Maule, Talca-Chile, April 26-28, 2002.
- "Characterizations of the existence
of solutions for a class of non-convex vector optimization problems",
invited lecture delivered in the International Conference on
Optimization and Optimal Control, Mongolian State University and
Center of Science and Culture of the Mongolian Academy of Sciences,
Ulaanbaatar-Mongolia, August 13-17, 2002.
- "Characterizations of the
non-emptiness/compactness of the solution set to equilibrium problems",
presented at International Congress of Mathematicians,
Beijing International Convention Center, Beijing-China, August 20-28,
2002.
- "On a class of non-convex vector
optimization problems", invited lecture delivered at International
Symposium of Mathematics within the Special Sesion on Optimization
and Calculus of Variations, Universidad de Magallanes, Punta
Arenas-Chile, November 12-15, 2002.
- (with D. Carrasco) "Representation
of E-subdifferential for a class of non-convex/convex functions",
invited lecture delivered at International Symposium of
Mathematics within the Special Sesion on Optimization and
Calculus of Variations, Universidad de Magallanes, Punta
Arenas-Chile, November 12-15, 2002.
- "Radial epiderivatives and
optimality conditions in non-convex scalar/vector optimization",
invited plenary conference delivered at 6to. Seminario
Internacional en Matemática Aplicada y Optimización, Instituto
de Matemática y Ciencias Afines (IMCA), Universidad Nacional de
Ingeniería, Lima-Perú, October 06-10, 2003.
- "On a non-convex variational
problem of the Laplacian", talk delivered in occasion of the LXXV
Encuentro Nacional de la Sociedad de Matemática de Chile
within the Special Sesion Optimization, Vicuña-Chile, 30-31
October and 1st November, 2003.
- (with C. Vera) "An optimal 2D
alternative theorem and nonconvex optimization problems",
presented at V Brazilian Workshop on continuous optimization, Florianópolis
- Brazil, March 22-25, 2004.
- (with R. Lóopez) "Asymptotic
analysis, existence and sensitivity results for linear complementary
problems", presented at 12th French-German-Spanish
Conference on Optimization, Universite de Avignon, Avignon -
France, September 20-24, 2004.
- (with C. Vera)"Computing the weakly
Pareto minima for bicriteria quasiconvex mappings on the real-line
without derivative", talk delivered at LXXVI Encuentro
Nacional de la Sociedad de Matem�ica de Chile
within the Special Sesion Optimization, Olmué-Chile, October 28
- 30, 2004.
- "A basic theory of multivalued
complementarity problems", plenary conference atV
Italian-Latin American Conference on Apllied and Industrial Mathematics
(ITLA 2004) , Universidad Nacional de Trujillo, Trujillo -
Perú, December 15-18, 2004.
- "Is it really a drawback the
convexity in optimization?", presented at 6eme Congres
Franco-Latinoamericain de Mathematiques Appliquees, Universidad
de Chile, Center for Mathematical Modelling, Santiago - Chile, January
14-18, 2005.
- "Weak efficiency in convex and
quasiconvex vector minimization without scalarizing", plenary
conference at 7mo. Seminario internacional en Matematica Aplicada
y Optimizacion, Instituto de Matematica y Ciencias Afines
(IMCA), Universidad Nacional de Ingenieria, Lima-Perú, October
03-07, 2005
- "Weak efficiency in multiobjective
quasiconvex minimization", plenary conference at III
Congreso Internacional de Matematica Aplicada y Computacional
(CIMACIII), Universidad Nacional del Callao, Facultad de
Ciencias Naturales y Matematica, Callao-Perú, January 30 -
February 04, 2006.
- "Asymptotic analysis for equilibrium and multivalued complementarity problems beyond copos-
itivity and positive homogeneity", contributed lecture delivered at VIEW´s on Differential
Equations (VIEW´s 2006), Universidad de Aveiro, Departamento de Matemática Aplicada,
Aveiro-Portugal, 21 - 24 June, 2006.
- "Asymptotically bounded multifunctions and the MCP beyond copositivity and positive homogeneity", presented at International Congress of Mathematicians (ICM2006), Palacio Municipal de Congresos, Madrid-Spain, August 22-30, 2006.
- "Asymptotically bounded multifunctions and the multivalued complementarity problem", Invited conference delivered in occasion of the Inauguration of the Building of the Instituto de Matemática y Ciencias Afines (IMCA), Universidad Nacional de Ingeniería Lima-Perú, December 04-09, 2006.
- "Weak efficiency in convex and quasiconvex vector optimization problems", invited talk within
the Stream session \Vector and Set-valued Optimization" at 22nd European Conference on
Operational Research (EURO XXII 2007), University of Economics, Prague-Czech Republic,
08 - 11 July, 2007.
- "Characterizing efficiency without linear structure", invited conference delivered in 7mo. Seminario Internacional en Matematica Aplicada y Optimización, Instituto de Matemática y Ciencias
Afines (IMCA), Universidad Nacional de Ingeniería, Lima-Perú, 01-05 October, 2007.
- Multivalued complementarity problems with asymptotically bounded multifunctions", invited
talk at VI Journees Franco-Chiliennes d'Optimisation, Universite Sud Toulon-Var, Toulon-France, May 19-21, 2008.
- An optimal alternative theorem and quasiconvex multiobjective optimization", Plenary Conference at XI Encuentro de Matemática y sus Aplicaciones, Escuela Politécnica Nacional, Quito-
Ecuador, July 07-11, 2008.
- Overview on generalized convexity and vector optimzation", Lecturer of two sessions at (also
Chairman) 2nd Summer School on Generalized Convex Analysis: Introduction to Theory
and Applications, Department of Applied Mathematics, National Sun Yat-sen University,
Kaoshiung-Taiwan, July 15-19, 2008.
- Asymptotically bounded multivalued complementarity problems", Contributed talk at (also
Chairman) IX International Symposium on Generalized Convexity/Monotonicity, Department
of Applied Mathematics, National Sun Yat-sen University, Kaoshiung-Taiwan, July 21-25,
2008.
- Convexity behind the non-convexity in optimization", Plenary Conference at IV Interna-
tional Congress of Computational and Applied Mathematics, Facultad de Ciencias Físicas y
Matemáticas, Universidad Nacional Pedro Ruiz Gallo, Lambayeque-Perú, September 15-19,
2008.
- Convexity behind the nonconvexity in Optimization", invited talk at Workshop on Variational
Analysis, Departamento de Ingeniería Matemática - CMM, Universidad de Chile, Santiago-
Chile, November 10-13, 2008.
- Scalarizing and unifying (approximate) efficiency: a basic theory and optimality conditions, Keynote Speaker at The 2nd International Conference of Nonlinear Analysis and Optimization (NAOP 2009),
Departament of Mathemtics, University of Isfahan, Isfahan-Iran, May 13-15, 2009.
- Hidden convexity in nonconvex optimization, Invited Conference at VI Italian-Latin American Conference
on Applied and Industrial Mathematics (ITLA 2009), (14-18 September, 2009), Escuela Politecnica Nacional (EPN), Quito, Ecuador.
- Unifying vector optimization problems: a theorical approach and optimality conditions, invited conference delivered in IX Seminario
Internacional en Matemática Aplicada y Optimización, Instituto de Matemáticas y Ciencias Afines (IMCA), Universidad Nacional de Ingeniería, Lima-Perú, 05-09 October 2009.
- Are we really far from convexity in nonconvex optimization?, invited speaker delivered in International Conference on Optimization and Its Applications, Departament of Mathematics, Banaras Hindu University (BHU), Varanasi - India, 16-18 February, 2010.
- A unification of (approximate) vector optimization problems: complete scalarizations and optimaly conditions, invited talk delivered in 24th Mini EURO Conference on Continuous Optimization and Information-Based Technologies in the Financial Sector, MEC-EurOPT-2010, Izmir University of Economics, Izmir - Turkey, 23 - 26 June, 2010.
- Charaterizing the Lagrangian strong duality in constrained nonconvex optimization, presented at International Congress of Mathematicians (ICM2010), Hyderabad International Convention Center (HICC), Hyderebad - India, 19 - 27 August, 2010.
- Convexity is not far from non-convexity in optimization, invited talk at Arrigo Cellina´s 70th birthday, Nonlinear differential equations and control, Dipartimento de Matematica e Applicazioni, Universita di Milano-Bicocca, Milano-Italy, September 22-23, 2011.
- Strong duality in cone-constrained nonconvex optimization with applications to non-
convex variational problems, invited plenary session at International conference, Op-
timization, Theory, Algorithms and Applications in Economics, A tribute to Juan En-
rique Martinez-Legaz on his 60th birthday, Centre de Recerca Matematica (CRM),
Barcelona-Spain, October 24-28, 2011.
- "Existence and strong duality for a class of non-convex variational problems", Invited talk at IX Americas Conference on Differential Equations, Universidad Nacional de Trujillo, Trujillo - Perú, January 09-14, 2012
- "Existence and strong duality for a class of nonconvex variational problems", Invited talk at Stream Session on Optimization and Calculus of Variations XXV Jornadas de Matemática de la Zona Sur, Concepción-Chile, April 18-20, 2012
- "Scalarizing vector optimization problems with non-necessarily transitive preferences or solid cones" Invited talk and also chairman at International Mini-Conference on Set-Valued Variational Analysis and Optimization with Applications in Finance, Leucorea, Lutherstadt Wittenberg - Germany, August 16-19, 2012
- "Efficiency and ordering variational principles", Invited talk delivered within the cluster session Muti-objective optimization at XXI International Symposium on Mathematical Programming, BTU, Berlin-Germany, August 19-24, 2012
- "Characterization of efficiency via scalarization with ordering sets without solidness" within the Sesion "Efficiency and vector optimization with applications" at 26nd
European Conference on Operational Research (EURO XXVI 2013), University La Sapienza Tor Vergata, Rome-Italy, 01 - 04 July, 2013.
- "Characterizing strong duality in nonconvex (quadratic) programming", invited conference delivered at XI International Seminar on Optimization and Related Areas, Instituto de Matem´tica y Ciencias Afines (IMCA), Universidad Nacional de Ingeniería, Lima - Perú, 07-11 October, 2013
- "Characterizing FJ and KKT points in nonconvex optimization with applications to a class of MPEC's", invited conference delivered at 2nd International Conference on Variational Analysis and Optimization, CMM, Universidad de Chile, Santiago - Chile, 07-10 January, 2014.
- "Does convexity arise in optimization naturally?", invited conference delivered at Workshop about variational inequalities, equilibria and neighbouring problems, Dipartimento di Informatica, Università di Pisa, Italy, 29-30 May, 2014
- "Convexity of the value function for a class of nonconvex variational problems: existence and optimality conditions" invited conference delivered at IV LatinAmerican Workshop on Optimization and Control, IMCA-UP, Lima, Perú, 15-18 July, 2014.
- "Hidden convexity in nonconvex optimization",Contributed talk at XI International Symposium on Generalized Convexity/Monotonicity, IMPA, Rio de Janeiro-Brazil, August 25-30, 2014.
- "Geometric and topological characterization of strong duality in nonconvex optimization", Plenary conference at International Conference on Variational Analysis, Optimization and Quantitative Finance (honoring Terry Rockafellar’s 80th birthday, University of Limoges, Limoges-Francia, May 18-22, 2015.
- "Searching convexity in nonconvex optimization", Plenary conference delivered in occasion of the XXIV Congreso de Matemática Capricornio (COMCA), Campus Playa Brava, Universidad Arturo Prat, Iquique-Chile, August 05-07, 2015.
- "Joint-range convexity for a pair of inhomogeneous quadratic functions with applications", Plenary conference delivered in XII International Seminar on Optimization and Related Areas, Instituto de Matemática y Ciencias Afines (IMCA), Universidad Nacional de Ingeniería, Lima - Perú, 05-09 October, 2015.
- "Local optimality implies flobal for a class of nonconvex integrals - Convexity of the image for a pair of quadratic functions", Invited speaker in Recent trends in differential equations: an international conference to celebrate the 75th birthday Arrigo Cellina and 60th birthday of Alberto Bressan, Universidad de Aveiro, Departamento de Matemática Aplicada, Aveiro-Portugal, 27 - 29 June, 2016.
- "The standard quadratic optimization problem beyond the polyhedral case reveals hidden convexity", Plenary Conference at VIII International Congress of Computational and Applied Mathematics, Facultad de Ciencias, Universidad Nacional de Ingeniería, Lima-Perú, August 23 - 26, 2016.
- "The conjugate of one-dimensional set-valued maps and related properties", Invited speaker in Third International Conference on Set-Valued Variational Analysis and Set Optimization with Applications to Economics, Finance, Statistics and Game Theory, Vienna University of Economics and Business, Vienna - Austria, 19-23 September, 2016.
- "Convexity: can we avoid it?", Plenary conference delivered in occasion of the XXX Jornadas de Matemática de la Zona Sur, Campus San Andrés, Universidad Católica de la Santísima Concepción, Concepción-Chile, April 26-28, 2017.
- "Convexity behind strong duality for a class of nonconvex quadratic optimization problems", Plenary conference delivered in XIII International Seminar on Optimization and Related Areas, Instituto de Matemática y Ciencias Afines (IMCA), Universidad Nacional de Ingeniería, Lima - Perú, 09 - 13 October, 2017.
- "Nonconvex integrals in L1 : strong duality, existence and local/global optimality",
Invited conference delivered in International Workshop on Optimization and Variational Analysis, Termas de Cauquenes, Universidad de O\’higgins, Rancagua - Chile, 10 - 11 January, 2018.
- "A zero-scale asymptotic analysis for quasiconvex functions and related properties", Contributed talk at International Conference on Variational Analysis and Nonsmooth Optimization, Martin-Luther Universiät Halle-Wittenberg, Halle (Saale) - Germany, 28 June - 01 July, 2018.
- "Optimizando durante toda la vida", Plenary conference delivered in occasion of the XXVII Congreso de Matemática Capricornio (COMCA), Campus Coloso, Universidad de Antofagasta, Antofagasta-Chile, July 25 - 27, 2018.
- "Quasiconvex optimization under zero-scale asymptotic analysis", Contributed talk delivered in occasion of the XXVII Congreso de Matemática Capricornio (COMCA), Campus Coloso, Universidad de Antofagasta, Antofagasta-Chile, July 25 - 27, 2018
- "The quadratic world and convexity with applications in nonconvex optimization", Plenary Conference at IX International Congress of Computational and Applied Mathematics, Facultad de Ciencias, Universidad Nacional Agraria La Molina, Lima-Perú, August 6 - 9, 2019
- "A new notion of symtotic function in quasiconvex optimization with applications to quadratic programming", Contributed talk, at Miniworkshop on "Optimización: herramientas teóricas y algortimos" IX International Congress of Computational and Applied Mathematics, Facultad de Ciencias Universidad Nacional Agraria La Molina, Lima-Perú, August 6 - 9, 2019.
- "Simultaneous diagonalization under weak regularity and a characterization", Invited conference delivery in XIV International Seminar on Optimization and Related Areas, Instituto de Matemática y Ciencias Afines (IMCA), Universidad Nacional de Ingeniería, Lima - Perú, 7 - 11 October, 2019.
- "A quadratic allocation process for a continuum of traders without standard convexity",
Invited conference delivered in XIV International Seminar on Optimization and Related
Areas, Instituto de Matemática y Ciencias Afines (IMCA), Universidad Nacional de Ingeniería, Lima - Perú, 07 - 11 October, 2019.
- "Sums of quasimonotone operators and sums of quasiconvex functions via quasimonotone family", Invited conference at Workshop on Optimization and Variational Analysis
(honoring Terry Rockafellar’s 85th birthday), CMM, University of Chile, Santiago-Chile, January 20 - 21, 2020.
- "Optimización positivamente homogégenea: de la programación matemática a integrales no convexas", Plenary conference at Evento Científico in occasion of 60 anniversary of Facultad de Ciencias (Universidad Nacional de Ingeniería), UNI - IMCA, Lima-Perú,September
22 - 24, 2020. (Virtual)
- "Optimización homogénea no convexa", Plenary conference at XIV International Fast Workshop on Applied and Computational Mathematics, Universidad Nacional de Trujillo,
Trujillo-Perú, January 07 - 08, 2021. (Virtual)
- "Integrales no convexas en Economía Matemática", Invited conference at II Congreso Internacional Multidisciplinario de Matemática, Escuela de Matemática, Universidad Nacional de Ingeniería, Lima-Perú, March 15 - 19, 2021. (Virtual)
- "Strong duality, convexity and copositive reformulation for a class of positively homogeneous optimization problems: Theoretical results", Contributed talk at Stream Session: Optimización Matemática, nuevas herramientas y algoritmos, XXXIII Jornadas de Matemática de la Zona Sur, Universidad de la Frontera, Temuco-Chile, April 20 - 24, 2021. (Virtual)
- "Convexidad: "casi siempre" presente en el mundo cuadrático, y más allá", Invited conference delivered in occasion of the Congreso Científico por el Bicentenario de la Independencia
del Perú (CCBIPERU2021), Universidad Nacional San Antonio Abad del Cusco, Cusco - Perú, July 19 - 23, 2021. (Coloquio Virtual Pre-Congreso).
- "Quasiconvex or quasimonotone families with applications to sums and quasiconvex optimization", Plenary conference delivered in occasion of the XXIX Congreso de Matemática Capricornio (COMCA), Departamento de Matemática, Universidad de Atacama, Copiapó - Chile, July 28 - 30, 2021. (Virtual)
- "Optimización cuadrática fraccional y análisis de autovalores de tensores", Contributed talk at Stream Session: Optimización, XXIX Congreso de Matemática Capricornio (COMCA),
Departamento de Matemática, Universidad de Atacama, Copiapó - Chile, July 28 - 30, 2021. (Virtual)
- "On a class of functions and its role in mathematical optimization", Plenary conference at X International Congress of Computational and Applied Mathematics, X CIMAC, Universidad Nacional Agraria de la Selva, Tingo María - Perú, August 19 - 28, 2021. (Virtual)
- "Non convex optimization", Contributed talk at Special Session: Optimization, delivered in X International Congress of Computational and Applied Mathematics, X CIMAC, Universidad Nacional Agraria de la Selva, Tingo María - Perú, August 19 - 28, 2021. (Virtual)
- "Sobre una clase de funciones casiconvexas y aplicaciones", Invited conference at LIX Aniversario 1ra Sesion Consejo de Facultad de Ciencias, Universidad Nacional de Trujillo, Trujillo-Perú, October 13, 2021. (Virtual)
- "Representaciones convexas de la función valor y la integral de Aumann en espacios normados", Invited conference at 75o Onomástico del Profesor Félix Escalante del Aguila,
Instituto de Matematicas y Ciencias Afines, Lima-Perú, December 20 - 22, 2021. (Virtual)
- "Robust solutions in nonconvex quadratic optimization under bounded interval uncertainty", Plenary conference at III Congreso Internacional Multidisciplinario de Matemática,
Escuela de Matemática, Universidad Nacional de Ingeniería, Lima-Perú, April 18 - 22, 2022. (Virtual)
- "A notion of conjugacy for one-dimensional set-valued mappings", Invited talk at Workshop on Equilibrium Problems and Related Topics, Department of Information Engineering, Computer Science and Mathematics, University of L’Aquila, L’Aquila - Italy, May 20 - 21, 2022. (Virtual)
- " On the lower semicontinuity of the value function in quasiconvex optimization", Invited talk at Special Session: Continuous optimization, delivered in XXXIX Congreso Nacional de Estadística e Investigación Operativa, SEIO 2022, Universidad de Granada, Granada - Spain, June 07 - 10, 2022. (Face to face)
- "A notion of conjugacy for nonconvex set-valued mappings of the real-line and related properties", Contributed talk delivered in occasion of the XXX Congreso de Matemática Capricornio (COMCA), Facultad de Ciencias, Universidad Arturo Prat, Iquique - Chile, August 03 - 05, 2022. (Virtual)
- "Representaciones convexas de la función valor y la integral de Aumann en espacios normados", Plenary conference at XVI International Fast Workshop on Applied and Computational Mathematics, Universidad Nacional de Trujillo, Trujillo-Perú, January 05- 06, 2023. (Virtual)
- "Optimización homogénea non convexa", Plenary conference at IV Congreso Internacional Multidisciplinario de Matemática, Escuela de Matemática, Universidad Nacional de In-
geniería, Lima-Perú, May 09 - 12, 2023. (Face to face) https://cimmuni2023.site/
- "Characterizing simultaneous diagonalization for two matrices”, Invited conference at XVI Nonsmooth and Variational Analysis, Institut de Mathématiques de Bourgogne, Université de Bourgogne, Dijon-France, June 26 - 28, 2023. (Face to face)
https://jourani.perso.math.cnrs.fr/Colloque_Thibault/index.html
- "Caracterizando diagonalización simultánea para dos matrices", Plenary conference at XI International Congress of Computational and Applied Mathematics, XI CIMAC, Universidad Peruana Unión, Ñaña-Perú, August 01 - 04, 2023. (Virtual) https://www.spmac.org/xi-cimac/index.html
- "Characterizing convexity of images of the sphere under a pair of quadratic functions with applications", Invited talk at workshop on Variational Analysis and Optimization, Università degli Studi di Messina, Dipartimento di Economia, Messina - Italy, September 14 - 15, 2023. (Face to face)
https://sites.google.com/unibs.it/vao2023/
- "Minimizing a quadratic function quadratically constrained on the sphere", Invited conference at International Seminar on Optimization and Related Areas, Universidad Nacional de San Agustin de Arequipa, Arequipa - Perú, October 02 - 06, 2023. (face to face) isora2023.imca.edu.pe/index.php
- "A geometrical analysis in quadratic optimization over two quadrics and the unit sphere: zero duality gap and strong duality", Plenary Speaker, delivered at Chilean-Peruvian Conference on Optimization and Variational Analysis, Departamento de Matemática, Universidad de Tarapacá, Arica - Chile, 06 - 10 May, 2024 (face to face). https://www.chipova2024.cl/