


I'm a Polish mathematician doing research in combinatorics, especially graph theory.
47. S. Hosamani, S. Shirkol, P. Jinagouda and M. Krzywkowski, Degree equitable restrained double domination in graphs, Electronic Journal of Graph Theory and Applications 9 (2021), 105111. 46. M. Krzywkowski and S. Wagner, Graphs with few total dominating sets, Discrete Mathematics 341 (2018), 9971009. 45. M. Henning and M. Krzywkowski, Total domination stability in graphs, Discrete Applied Mathematics 236 (2018), 246255. 44. C. Brause, M. Henning and M. Krzywkowski, A characterization of trees with equal 2domination and 2independence numbers, Discrete Mathematics and Theoretical Computer Science 19 (1) (2017), #1. 43. M. Krzywkowski and J. Topp, On interval and indifference graphs, Mathematical Reports 19 (2017), 15. 42. M. Krzywkowski, Double outerindependent domination in graphs, Ars Combinatoria 134 (2017), 193207. 41. N. Jafari Rad, E. Sharifi and M. Krzywkowski, Domination stability in graphs, Discrete Mathematics 339 (2016), 19091914. 40. M. Krzywkowski, Nonisolating bondage in graphs, Bulletin of the Malaysian Mathematical Sciences Society 39 (2016), 219227. 39. M. Krzywkowski and J. Topp, On homogeneously representable interval graphs, National Academy Science Letters 39 (2016), 3941. 38. M. Krzywkowski and D. Mojdeh, Bicritical domination and double coalescence of graphs, Georgian Mathematical Journal 23 (2016), 399404. 37. M. Krzywkowski, D. Mojdeh and M. Raoofi, Outer2independent domination in graphs, Proceedings  Mathematical Sciences 126 (2016), 1120. 36. B. Krishnakumari, Y. Venkatakrishnan and M. Krzywkowski, On trees with total domination number equal to edgevertex domination number plus one, Proceedings  Mathematical Sciences 126 (2016), 153157. 35. M. Krzywkowski, On trees with equal total domination and 2outerindependent domination numbers, Mathematical Reports 18 (2016), 111. 34. S. Hosamani and M. Krzywkowski, On the difference of Zagreb coindices of graph operation, Gulf Journal of Mathematics 4 (3) (2016), 3641. 33. M. Krzywkowski and Y. Venkatakrishnan, Bipartite theory of graphs: outerindependent domination, National Academy Science Letters 38 (2015), 169172. 32. M. Krzywkowski, On trees attaining an upper bound on the total domination number, Bulletin of the Iranian Mathematical Society 41 (2015), 13391344. 31. M. Krzywkowski, An upper bound for the double outerindependent domination number of a tree, Georgian Mathematical Journal 22 (2015), 105109. 30. N. Jafari Rad and M. Krzywkowski, 2outerindependent domination in graphs, National Academy Science Letters 38 (2015), 263269. 29. M. Krzywkowski, On trees with equal 2domination and 2outerindependent domination numbers, Indian Journal of Pure and Applied Mathematics 46 (2015), 191195. 28. M. Krzywkowski, On trees with equal domination and total outerindependent domination numbers, Utilitas Mathematica 98 (2015), 197206. 27. B. Krishnakumari, Y. Venkatakrishnan and M. Krzywkowski, Bounds on the vertexedge domination number of a tree, Comptes Rendus Mathématique 352 (2014), 363366. (26.) M. Krzywkowski, Minimal double dominating sets in trees, Proceedings of the FAW 2014 Conference, LNCS 8497, pp. 151157, Springer 2014. 26. M. Krzywkowski, An algorithm for listing all minimal double dominating sets of a tree, Fundamenta Informaticae 130 (2014), 415421. (25.) M. Krzywkowski, An algorithm for listing all minimal 2dominating sets of a tree, Proceedings of the FAWAAIM 2013 Conference, LNCS 7924, pp. 1216, Springer 2013. 25. M. Krzywkowski, Minimal 2dominating sets in trees, RAIRO  Theoretical Informatics and Applications 47 (2013), 235240. 24. M. Krzywkowski, On the ratio between 2domination and total outerindependent domination numbers of trees, Chinese Annals of Mathematics, Series B 34 (2013), 765776. 23. M. Krzywkowski, 2bondage in graphs, International Journal of Computer Mathematics 90 (2013), 13581365. 22. M. Krzywkowski, On trees with double domination number equal to 2domination number plus one, Houston Journal of Mathematics 39 (2013), 427440. 21. M. Krzywkowski, Trees having many minimal dominating sets, Information Processing Letters 113 (2013), 276279. 20. M. Krzywkowski, Nonisolating 2bondage in graphs, Journal of the Mathematical Society of Japan 65 (2013), 3750. 19. R. Hod and M. Krzywkowski, A construction for the hat problem on a directed graph, Electronic Journal of Combinatorics 19 (2012), #P30. 18. M. Krzywkowski, On trees with double domination number equal to the 2outerindependent domination number plus one, Chinese Annals of Mathematics, Series B 33 (2012), 113126. 17. M. Krzywkowski, An upper bound on the 2outerindependent domination number of a tree, Comptes Rendus Mathématique 349 (2011), 11231125. 16. M. Krzywkowski, On the hat problem on a graph, Opuscula Mathematica 32 (2012), 285296. 15. M. Krzywkowski, The hat problem on a union of disjoint graphs, Commentationes Mathematicae 51 (2011), 167176. 14. M. Krzywkowski, An upper bound on the total outerindependent domination number of a tree, Opuscula Mathematica 32 (2012), 153158. 13. M. Krzywkowski, Hat problem on odd cycles, Houston Journal of Mathematics 37 (2011), 10631069. 12. M. Krzywkowski, A lower bound on the double outerindependent domination number of a tree, Demonstratio Mathematica 45 (2012), 1723. 11. M. Krzywkowski, On trees with double domination number equal to total domination number plus one, Ars Combinatoria 102 (2011), 310. 10. M. Krzywkowski, A more colorful hat problem, Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica 10 (2011), 6777. 9. M. Krzywkowski, The hat problem on cycles on at least nine vertices, Ars Combinatoria 101 (2011), 313. 8. M. Krzywkowski, A lower bound on the total outerindependent domination number of a tree, Comptes Rendus Mathématique 349 (2011), 79. 7. M. Krzywkowski, A modified hat problem, Commentationes Mathematicae 50 (2010), 121126. 6. M. Krzywkowski, On the hat problem, its variations, and their applications, Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica 9 (2010), 5567. 5. M. Krzywkowski, An alternative proof of a lower bound on the 2domination number of a tree, International Journal of Modern Mathematics 5 (2010), 325326. 4. M. Krzywkowski, On the hat problem on the cycle C_{7}, International Journal of Contemporary Mathematical Sciences 5 (2010), 21372148. 3. M. Krzywkowski, New proofs of some Fibonacci identities, International Mathematical Forum 5 (2010), 869874. 2. M. Krzywkowski, Hat problem on the cycle C_{4}, International Mathematical Forum 5 (2010), 205212. 1. M. Krzywkowski, Hat problem on a graph, Mathematica Pannonica 21 (2010), 321.
13. N. Jafari Rad and M. Krzywkowski, On the Roman reinforcement in graphs, submitted. 10. M. Krzywkowski and J. Topp, On graphs of semiorders, submitted. 7. M. Krzywkowski, D. Mojdeh and B. Yazdanmehr, Linear programming for determining total dominating sets in graphs, submitted. 4. M. Krzywkowski, Total outerindependent domination in graphs, submitted. 1. N. Jafari Rad and M. Krzywkowski, On the restrained Roman domination in graphs, submitted.
39. 59th Annual Congress of the South African Mathematics Society, November 24, 2016, Cape Town, South Africa. 38. 30th Midwestern Conference on Combinatorics and Combinatorial Computing, Illinois State University, October 1416, 2016, Normal, Illinois, USA. 37. Fourth Gdansk Workshop on Graph Theory, June 29  July 1, 2016, Gdansk, Poland. 36. Forum Informatyki Teoretycznej 2016, University of Warsaw, February 56, 2016, Warsaw, Poland. 35. 58th Annual Congress of the South African Mathematics Society, University of the Witwatersrand, November 46, 2015, Johannesburg, South Africa. 34. CID 2015  Colourings, Independence and Domination, September 2025, 2015, Szklarska Poreba, Poland. 33. LMSEMS Mathematical Weekend, University of Birmingham, September 1820, 2015, Birmingham, United Kingdom. 32. Third Gdansk Workshop on Graph Theory, September 1618, 2015, Gdansk, Poland. 31. 20th International Symposium on Fundamentals of Computation Theory, August 1719, 2015, Gdansk, Poland. 30. 8th Slovenian Conference on Graph Theory, June 2127, 2015, Kranjska Gora, Slovenia. 29. 13th CologneTwente Workshop on Graphs & Combinatorial Optimization, Marmara University, May 2628, 2015, Istanbul, Turkey. 28. FortySixth Southeastern International Conference on Combinatorics, Graph Theory, and Computing, Florida Atlantic University, March 26, 2015, Boca Raton, Florida, USA. 27. 7th Cracow Conference on Graph Theory, September 1519, 2014, Rytro, Poland. 26. International Congress of Mathematicians, August 1321, 2014, Seoul, Korea. 25. The Second Gdansk Workshop on Graph Theory, University of Gdansk, June 2628, 2014, Gdansk, Poland. 24. 37th Australasian Conference on Combinatorial Mathematics and Combinatorial Computing, University of Western Australia, December 913, 2013, Perth, Australia. 23. 22nd Workshop '3in1', November 2830, 2013, Kroczyce, Poland. 22. CID 2013  Colourings, Independence and Domination, September 1520, 2013, Szklarska Poreba, Poland. 21. First Gdansk Workshop on Graph Theory, Gdansk University of Technology, September 1112, 2013, Gdansk, Poland. 20. Palanga Conference in Combinatorics and Number Theory, September 17, 2013, Palanga, Lithuania. 19. Combinatorics, Algebra, and More  A Conference in Celebration of Peter Cameron, Queen Mary, University of London, July 810, 2013, London, United Kingdom. 18. 24th British Combinatorial Conference, Royal Holloway, University of London, July 15, 2013, London, United Kingdom. 17. 11th Nordic Combinatorial Conference, KTH Royal Institute of Technology, June 1719, 2013, Stockholm, Sweden. 16. FortyFourth Southeastern International Conference on Combinatorics, Graph Theory, and Computing, Florida Atlantic University, March 48, 2013, Boca Raton, Florida, USA. 15. Seventh International Workshop on Algorithms and Computation WALCOM 2013, Indian Institute of Technology, February 1416, 2013, Kharagpur, India. 14. Workshop on Graph and Geometric Algorithms, Indian Statistical Institute, February 1113, 2013, Kolkata, India. 13. 1st Mediterranean Conference on Algorithms, December 35, 2012, Ein Gedi, Israel. 12. 21st Workshop '3in1', AGH University of Science and Technology, November 29  December 1, 2012, Cracow, Poland. 11. International Conference on Discrete Mathematics and Computer Science 2012, Lebanese University, November 1317, 2012, Beirut, Lebanon. 10. 26th Midwest Conference on Combinatorics, Cryptography and Computing, Southern Utah University, October 1113, 2012, Cedar City, Utah, USA. 9. Group Theory, Combinatorics, and Computing, Florida Atlantic University, October 47, 2012, Boca Raton, Florida, USA. 8. 21st International Symposium on Mathematical Programming, Technische Universitat Berlin, August 1924, 2012, Berlin, Germany. 7. 8th Symposium Diskrete Mathematik 2012, Technische Universitat Berlin, August 1718, 2012, Berlin, Germany. 6. 38th International Workshop on Graph Theoretic Concepts in Computer Science, June 2628, 2012, Jerusalem, Israel. 5. 12th Haifa Workshop on Interdisciplinary Applications of Graph Theory, Combinatorics and Algorithms, University of Haifa, June 2425, 2012, Haifa, Israel. 4. 35th Australasian Conference on Combinatorial Mathematics & Combinatorial Computing, Monash University, December 59, 2011, Melbourne, Australia. 3. 20th Workshop '3in1', November 2426, 2011, Krynica Zdroj, Poland. 2. 23rd British Combinatorial Conference, University of Exeter, July 48, 2011, Exeter, United Kingdom. 1. Two OneDay Colloquia in Combinatorics 2011, QMUL and LSE, May 1819, 2011, London, United Kingdom.
2. M. Krzywkowski, Liczby Fibonacciego i domino, Matematyka  czasopismo dla nauczycieli 8/2009, 482483, in Polish.
