Awards & Recognitions

  1. Ganesa Cendekia Widya Adiutama, Institut Teknologi Bandung, 2014.
  2. Satyalancana Karya Satya (20-year service), President of Indonesia, 2013.
  3. Extraordinary Intellectual Quality, Ministry of National Education 2010
  4. Habibie Award in Basic Science, 2009.
  5. Australian Alumni Award for Excellence in Education, 2009
  6. The Best Professor from Directorate of Higher Education Ministry, Department of National Education, Indonesia, 2008.
  7. Satyalancana Karya Satya, President of Indonesia, 2006.
  8. Ganesa Wira Adiutama, ITB, 2001. 

  1. Keynote talks. Some Recent Progress on Ramsey Theory, The 2nd International Conference of Combinatorics, Graph Theory and Network Topology, Universitas Jember, Indonesia, Nov 24-25, 2018
  2. Indonesian representative. in General Assembly, International Mathematical Union (IMU), July 29-30, 2018, Sao Paulo Brazil.
  3. Invited poster. Unicyclic Ramsey (mK2,P4)- minimal graphs, Building Bridges II, 2-6 July 2018, Budapest Hungary.
  4. Invited talk. Some Ramsey numbers and Ramsey (mK2,H)-minimal graphs, The 3rd Sendai Workshop on Algebraic Combinatorics, 5-8 March 2018, Tohoku Univ, Sendai, Japan.
  5. On regular Ramsey minimal graphs, Colourings, Independence and Domination: The 17th Workshop on Graph Theory, September 17-22 2017, Piechowice, Polandia
  6. Invited talk. On the Ramsey Number of Wheels, Highlights of Mathematics in Asia, School of Mathematics, Tata Institute of Fundamental Research, Mumbai India, August 18-21, 2017.
  7. Keynote talk. Workshop: Peran dan Fungsi Kelompok Bidang Keahlian, Universitas Andalas, Padang, 5 June 2017
  8. Keynote talk. Ramsey Number in Graphs, the Annual Convention Mathematical Society of the Philippines, May 29-31, Legazpi City, Philippines, 2017.
  9. Keynote talk. Graph Ramsey Number: Old problem and New Result, International Conference on Mathematics: Education, Theory & Application (ICMETA), 6-7 Dec 2016, Surakarta Indonesia.
  10. Public lecture. “Peranan Matematika dalam Membangun Bangsa” (in Indonesian), Universitas Sebelas Maret, Surakarta, 5 Dec 2016.
  11. Seminar. Ramsey Number for Graphs, Departmental Seminar, University of Essex, Colchester UK, 22 November 2016.
  12. Keynote. Ramsey Numbers for Graphs, The 12th International Conference on Mathematics, Statistics and Its Application (ICMSA), 4-6 October 2016, Banda Aceh Indonesia.
  13. Invited. On the structure of Almost Moore digraphs (invited talk), Distance in graph 2016, 18-22 Juli 2016, Ubud Bali, Indonesia.
  14.  Visiting professor. Tohoku University, 22 April – 1 May 2016. Intensive course in Ramsey Theory.
  15. Seminar. The existence of almost Moore digraphs, Pune University, PUNE India, 31 December 2015.
  16. Invited. On Almost Moore Digraphs, The 81st Annual Conference of IMS Visvesvaraya National Institute of Technology (VNIT), Nagpur India, 27-30 December 2015
  17. Seminar. On the existence of almost Moore digraphs, Xiamen University, Xiamen, China, 18 November 2015.
  18. Seminar. Ramsey Niumbers for Graphs, Mathematics and Mathematics Education, National Institute of Education, NTU, Singapore, 28 Oktober 2015.
  19. Research Workshop. Ramsey Theory for Graphs, SEAMS School on Coding and Graph, Universitas Hasanuddin, Makassar, 26 September – 6 Oktober 2015.
  20. Invited. Metric Dimension of graphs, GraphMasters Workshop Universitas Jember, 25 – 26 September 2015.
  21. Keynote. Ramsey Numbers for graphs, The 5th Annual Basic Science International Conference 2015, Malang, Indonesia, February 11-12, 2015
  22. The Complete List of Ramsey $(2K_2,K_4)-$Minimal Graphs, Bordeaux Graph Workshop, 19-22 November 2014, Bordeaux France (contributed talk)
  23. Keynote. On Graph Ramsey Numbers, The 7th International Conference on Science and mathematics Education in Developing Countries, 7-9 November 2014, Mandalay
  24. Invited. Conjecture on the total vertex irregularity strength of graphs, Bandung Workshop on Combinatorics and Optimization (BWCOP) 2014, ITB Bandung Indonesia, 1-2 November 2014
  25. On the Ramsey (G,H)-minimal graphs, International Congress on Mathematicians (ICM) 2014, Seoul Korea, August 13-21,  2014 (contributed talk).
  26. On Ramsey numbers for wheels and union of graphs, IWONT2014, Bratislava Slovakia, June 30 – July 4, 2014.
  27. The Ramsey number of a union of graphs, SEAMS-YUNNAN Workshop in Mathematics and Information Science, Kunming P.R. China, June 18-22, 2014.
  28. Keynote. Size Ramsey Numbers and Ramsey Minimal Graphs, The 9th GraphMasters Workshop, Universitas Islam Malang (UNISMA), Indonesia, June 7-8, 2014
  29.  On Graph Ramsey Ramsey, International Joint Research Week on Non-Commutative Stochastic Systems: Analysis, Modelling and Applications, GSIS Tohoku University, Sendai, Japan, February 3-7, 2014.
  30. Invited. Some progress on Ramsey (G,H)-minimal graphs, The 6th World Conference on 21st Century Mathematics 2013, March 6-9, 2013, Abdus Salam School of Mathematical Sciences, GC University Lahore Pakistan.
  31. On the locating-chromatic number of a corona product of two graphs, ICTP-IPM Workshop and Conference on Combinatorics and Graph Theory, Trieste Italia, 3-14 September 2012.
  32. Invited. Conjectures on the total vertex-irregularity strength of graphs, International Workshop on Graph labelling, Puncak Indonesia, 23-25 July 2012.
  33. On the locating-chromatic number for a corona product of two graphs, SIAM Conference on Discrete Mathematics Dalhousie University, Halifax, Nova Scotia, Canada, 18-21 June 2012.
  34. Seminar. On the existence of (d,k)-digraphs, Seminar, 15 May 2012, Graduate School of  Information Sciences, Tohoku University, Japan.
  35. Ramsey Minimal Graphs, Workshop on Graph Theory, 22-24 December 2011, ASSMS GC University, Lahore Pakistan.
  36. The locating-chromatic number for the corona product of graphs, International Conference in Mathematics and Applications (ICMA-MU 2011), 17-19 December 2011, Bangkok Thailand.
  37. On The Existence of Almost Moore Digraphs, Department of Mathematics Seminar, University of the Basque Country, Bilbao Spain, 25 November 2011.
  38. Necessary conditions for (d,k)-digraphs, International Workshop on Optimal Networks Topologies (IWONT2011), Brussels Belgium, 11-15 July 2011.
  39. Ramsey Theory, Mathematics Seminar Series, 30 May 2011, ITB Bandung Indonesia.
  40. On Ramsey (2K2,Pn)-minimal graphs, International Congress of Mathematicians, 19-27 August 2010, Hyderabad India.
  41. Indonesian representative. in General Assembly, International Mathematical Union (IMU), August 16-17, 2010, Bangalore India.
  42. The existence of almost Moore digraphs with higher degree and diameter, International Workshop on Optimal Networks Topologies IWONT2010, Barcelona Spain, 9-12 June 2010.