Conference Participation and Talks

2024

  • CaRT-2024 Combinatorics and Related Topics, Theory and Computation of the Defective Ramsey Numbers, Invited Speaker, Online Conference jointly organized between Poland and Mexico, 5-7 November 2024. Video
  • GCGT 2024, The 9th Gdansk Conference on Graph Theory (GCGT), Defective Ramsey Numbers: Classical Proofs and Computer Enumerations, Invited speaker, June 16-21, Gdansk, Poland.
  • Graphs, Groups, and Automata, Computing Defective Ramsey Numbers, May 2024, Feza Gursey Center for Physics and Mathematics, Istanbul.
  • Monday with Marty, Online Seminar Series, Extremal Triangle-Free Graphs, Feburary 2024.
  • Charles University, KAM, Department of Mathematics and Physics, Seminar Series, Extremal Triangle-Free Graphs, Feburary 2024.
  • Koc University, Mathematics Department, Seminar Series, Extremal Triangle-Free Graphs, January 2024.

2023

  • National Mathematics Symposium (UMS), Kombinatoryal Optimizasyon, Hesaplama Karmaşıklığı ve Algoritmik Çizge Kuramı, Invited Speaker, 2023, Edirne, Turkey.
  • SEA 2023: 21st Symposium on Experimental Algorithms, Integer Programming Formulations and Cutting Plane Algorithms for the Maximum Selective Tree Problem, July 2023, Barcelona

2022

  • International Conference on Graph Theory, ICGT 2022, Maximum number of edges in triangle-tree graphs with bounded degree and matching number, July 2022, Montpellier.

2020

  • Algorithmic Graph Theory - Mondays with Marty, The Defensive Domination Problem, September 2020
  • ''The Nobel Prize in Economic Sciences 2012 and Matching Theory'', Keynote Lecture
    at the 9th International Conference on Operations Research and Enterprise Systems, ICORES 2020, Malta, 22-24 February, 2020.

2019

    2018

    • Workshop on Graph Theory and its Applications VIII, The Defensive Domination Problem, November 2018, Istanbul Center for Mathematical Sciences Center, IMBM, Turkey.
    • SIAM Conference on Discrete Mathematics, Minisymposium speaker, The selective coloring problem, June 4-8, 2018, Denver, CO, USA.
    • Princeton Discrete Mathematics Seminars, Invited Speaker, Edge-extremal Graphs Under Degree and Matching Number Restrictions, March 2018, Princeton University, USA.


    2017

    • Combinatorial Potlatch 2017, Invited Speaker, Recent Results on Equimatchable Graphs, November 2017 University of Victoria, Canada.
    • 17th Haifa Workshop on Interdisciplinary Applications of Graphs - CRI, Edge extremal Graphs Under Degree and Matching Number Restrictions, June 2017, Haifa, Ceaseria Research Institute, Israel.

    2016

    • University of Primorska, Invited speaker, Characterization and Recognition of Stable Equimatchable Graphs December 2016, Koper, Slovenia.
    • Workshop on Graph Theory and its Applications VI, Co-organizer, Istanbul Center for Mathematical Sciences Center, IMBM, Turkey.
    • International Colloquium on Graphs and Optimization GO X, On two extensions of equimatchable Graphs, July 2016, Rigi Kaltbad, Switzerland.
    • 3rd Istanbul Design Theory, Graph Theory and Combinatorics Conference, Extensions of Equimatchable Graphs, June 2016, Istanbul, Turkey.
    • The Caesarea Rothschild Institute, University of Haifa, Invited speaker, Recent Results on Equimatchable Graphs, January 2016, Haifa, Israel.

    2015

    • Gebze Teknik Universitesi, Invited speaker, Minimum Maximal Matching and Equimatchable Graphs, December 2015, Kocaeli, Turkey.
    • Koc University, Invited speaker, Minimum Maximal Matching and Equimatchable Graphs, December 2015, Istanbul, Turkey.
    • John Gimbel's Birthday Conference, Defective Ramsey Numbers, Prague, August 2015.
    • Algorithmic Graph Theory on the Adriatic Coast, AGTAC, Equimatchable Graphs are C_2k+1-free for k>= 4, June 16-19, 2015, Koper, Slovenia.
    • 13th Cologne-Twente Workshop on Graphs and Combinatorial Optimization, CTW 2015, On the Minimum and Maximum Selective Graph Coloring Problems, May 26-28, 2015, Istanbul, Turkey.

      2014

      • International Colloquium on Graphs and Optimization, GO IX, Edge intersecting and non-splitting paths in a grid -Part II :One Bend ENPG, Sirmione, Italy.
      • Dagstuhl Seminar 14071 : Graph Modification Problems (by invitation only), Convexity in Graphs, Dagstuhl, Germany. Dagstuhl Reports, Volume 4, Issue 2, Page 44, 2014, available online at DOI: 10.4230/DagRep.4.2.38
      • The 28th Ljubljiana-Leoben Graph Theory Seminar, Minimum Maximal Matching: old problem, new challenges, invited speaker, Koper, Slovenia.


      2013

      • Institute of Industrial Engineering & YAEM 2013, Tabu Search Algorithms for Selective Coloring  Problem, Istanbul, Turkey.
      • CanaDAM, 4th Canadian Discrete and Algorithmic Mathematics Conference, Defective Ramsey Numbers, St John's, Canada.

      2011

      • 2nd Istanbul Design Theory, Graph Theory and Combinatorics Conference, Defective Ramsey Numbers, Koc University, Istanbul, Turkey.
      • 7th Slovenian International Conference on Graph Theory, Defective Ramsey Numbers, Bled, Slovenia.
      • Dagstuhl Seminar 11182 : Exploiting graph structure to cope with hard problems (by invitation only), A Survey on Polar graphs, Dagstuhl, Germany Dagstuhl, Reports, Volume 1, Issue 5, 2011, available online at DOI: 10.4230/DagRep.1.5.29

      2010

      • International Colloquium on Graphs and Optimization, GO VII, Polar graphs, Ovronnaz, Switzerland.
      • YAEM 2010, En küçük maksimal eşleme, uygulamalar ve zorluk, Sabancı University, Turkey.
      • SIROCCO 2010, Local organization committee chair, Nesin Matematik Köyü, Şirince, Turkey.

      2009

      • NoNA Spring School on Algorithms, invited lecturer, Some generalized coloring problems, Istanbul.
      • Bergen University, invited speaker, Polar graphs, Bergen.
      • Sabancı University, Engineering Faculty, invited speaker, Algorithmic Graph Theory and its Applications, Istanbul.


      2008

      • Bilkent University, IE, Minimum Maximal Matching - Applications and Hardness, invited speaker, Ankara, October 16.
      • Graph Theory 2008, (Carsten Thomassen's 60th birthday), Generalized Colorings with applications to some problems in robotics, Sandbjerg Manor, Denmark, August 17-24.
      • TAMC'08, Theory and Applications of Models of Computation, Minimum Maximal Matching is NP-hard in regular bipartite graphs, Xi'an, China.
      • Koç University, Engineering Faculty, invited speaker, Graph coloring problems and their applications, Istanbul.
      • 3ème Cycle Romand de Recherche Opérationnelle, invited lecturer, Minimum Maximal Matching; applications and NP-hardness, Zinal, Switzerland
      • Bosphorus University, Computers Sciences, invited speaker, Generalized colorings in line graphs, Istanbul.

      2007

      • International Colloquium on Graphs and Optimization, GO VI, Covering graphs with cliques and independent sets, Lugano, Switzerland.
      • CanaDAM, 1st Canadian Discrete and Algorithmic Mathematics Conference, Covering graphs with cliques and independent sets, Banf, Canada.
      • Bosphorus University, IE, invited speaker, Algorithmic graph theory and its applications, Istanbul, Turkey.

      2006

      • AGAPE I, Generalized vertex coloring problems and their application to permutation graphs, Paris, France.
      • Koç University, invited speaker, Generalized vertex coloring problems and their application to permutation graphs, Istanbul, Turkey.
      • International Colloquium on Graphs and Optimization, GO V, Polar cographs, Leukerbad, Switzerland
      • Sixth Czech-Slovak International Symposium on Combinatorics, Graph Theory, Algorithms and Applications, Polar cographs, Prag, Czech Republic.
      • Congrès ROADEF 2006, On the approximation of Min Split-coloring and Min Cocoloring, Lille, France.

      2005

      • The Fifth ALIO/EURO Conference on Combinatorial Optimization, Split-coloring permutation graphs, Paris, France.
      • 2nd Brazilian Symposium on Graphs, Algorithms, and Combinatorics, GRACO'2005, (p,k)-coloring line graphs, Angra Dos Reis, Brasil.

      2004

      • les quatrièmes journées francophones de recherche opérationnelle, FRANCORO IV, Algorithmes d'approximation et algorithmes séquentiels sur les problèmes de (p; k)-coloration, Fribourg, Switzerland.
      • Bilkent University, invited speaker, On generalizations of graph coloring problems, Ankara, Turkey.
      • EURO Summer Institute - Optimization and Data Mining, Partitioning cographs into cliques and stable sets, Ankara, Turkey.
      • Mathématiques Discrètes et Sciences Sociales -EHESS, invited speaker, Problèmes de (p,k)- partitionnement, Paris, France.


      2003

      • ROADEF Ecole d'Automne, On Split Coloring Problems, Tours, France.
      • First Joint Operations Research Days, IBM Research-The Swiss Operations Research Society, On Split Coloring Problems, Lausanne, Switzerland.
      • EURO-INFORMS, Approximation preserving reductions among set covering and vertex covering hierarchies via differential approximation ratio, Istanbul, Turkey.

      Teaching and Supervision