1.  Academic Visits

2.  Conferences and workshops attended

3.  Invited talks

4.  Visitors

 

Academic Visits:

 

 

1.    Chongqing University, July 11-14, 2019.

 

2.    Northwestern Polytechnical University in Xian, China from June 27, 2019 to June 29, 2019.

 

3.     Central China Normal University, June 24-26, 2019.

4.     Hunan First Normal University, June 21-24, 2019.

5.     Beijing Jiaotong University and Renmin University, June 16-20, 2019.

6.     Tianjin University and Nankai University, June 13-16, 2019.

7.     Department of Mathematics, Xiamen University, June 3-10, 2019.

8.     Minnan Normal University, Huaqiao University, Quanzhou Normal University, Jimei University, June 10-12, 2019.

9.     Department of Mathematics, Fuzhou University, Dec 20-22, 2018.

10. Department of Mathematics, South Normal University, Dec 26-Jan. 3, 2019.

11. Department of Mathematics, Hunan First Normal University, June 29-July 3, 2018.  During this period, also visit Changsha University, Hunan University of Science and Technology, Hunan University. 

12. Department of Mathematics, Sichuan Normal University, June 18-24, 2018.

13. Department of Mathematics, Xiamen Technological University, June 11-12, 2018.

14. Department of Mathematics, Linyi University, June 1-June7, 2018.

15. Department of Mathematics, Zhejiang University, May 29-June 1, 2018.

16. Visit School of mathematical sciences, Xiamen University, Dec. 28-31, 2017.

17. Visit School of Information Engineering, Longyan University, Dec. 24-26, 2017.

18. Visit School of mathematical sciences, Hunan Normal University and Hunan University, Dec. 22-23, 2017.

19. Visit School of mathematical sciences, Chongqing University, Dec. 20-21, 2017.

20. Visit School of mathematical sciences, Hunan University, Dec. 8-10, 2017.

21. Visit School of mathematical sciences, South China Normal University, Dec. 7-8, 2017. 

22. Visit School of Mathematical sciences, Xiamen University,  China,  June 19-26,  2017.

23. Visit Fuzhou University,  China,  June 26-27,  2017.

24. Visit Linyi University,  China,  June 5-10,  2017.

25. Visit Qufu University,  China,  June 4-5,  2017.

26. Visit Dalian technological University,  China,  May 28-June 3,  2017.

27. Visit School of Mathematical sciences, Zhejiang Normal University,  Dec. 12-14,  2016.

28. Visit School of Mathematical sciences, Xiamen University,  June 13-17,  2016.

29. Visit School of  Sciences, Jimei University,  June,  2016.

30. Visit School of Mathematical sciences, Hunan University,  Dec. 2015.

31. Visit School of Mathematical sciences, Hunan First Normal University,  Dec.  2015.

32. Visit School of Mathematical sciences, Xiamen University,  June 8-12, 2015.

33. Visit School of Mathematical sciences, South China Normal University,  June 15-19, 2015.

34. Visit School of Mathematical sciences, Xiamen University, May 14-16 and June 23-26, 2014.

35. Visit School of sciences, Jimei University, June 16-20, 2014.

36. Visit School of sciences, Jimei University, Dec. 18-20, 2013.

37. Visit South China Normal University, Guangzhou, China, June 10-23, 2013.

38. Visit Xiamen University, Xiamen, China, June 26-28, 2013.

39. Visit school of sciences, Jimei University, May 29-June 1, 2011.

40. Visit Qinghai Normal University, May 18-23, 2011.

41. Visiting Professor at Jimei University, Aug. 9-14, 2010.

42. Visiting Professor at the Center of Discrete Mathematics, Fuzhou University, May 31-July 9, 2010 (excluding June 21-26).

43. Visiting Professor at the department of mathematics, Xiamen University, June 21-26, 2010.

44. Department of mathematics, Hong Kong University of Science and Technology, December 6-10, 2009.

45. Department of Mathematics, Xiamen University, November, 2008.

46. Visiting fellow at Isaac Newton Institute of Mathematical Sciences, Cambridge, 14 - 26 January & 8 April – 26 June,  2008.

47. Department of Mathematics, Xiamen University, December, 2004.

 

 

 

 

 

 

 

 

Conferences and Workshops attended:

 

1.         The 2019 Xi’an International Workshop on Graphs and Combinatorics/Workshop on Eulerian Subgraphs and Related Problems and Related Problems,  Northwestern Polytechnical University in Xian, China from June 27, 2019 to June 29, 2019.

 

2.        Seminar on graph theory and its application 2019 (SGTA2019) at UPM, Malaysia, April 2019.

 

3.        International conference on Graph Theory and Combinatorics at Beijing Jiaotong University, March, 2019.

 

 

4.        Workshop on Graphs and Knots, June 8-11, 2018, at Xiamen University.  Invited talk on ``Proof of Lundow and Markstr\"{o}m's conjecture on chromatic polynomial”. 

 

5.        International Conference on Graph Theory and Combinatorics at Sanya, June 24-28, 2018.

 

6.        The third conference of Combinatorics and Graph Theory at Hunan University, Dec. 9-10, 2017.  Invited talk on ``From G-parking functions to B-parking functions”. 

 

7.        The 8th Singapore Mathematical Society symposium, Sep. 29, 2017.  Invited talk on ``Research triggered by 4CC”.

 

8.        The Ninth Shanghai Conference on Combinatorics (9SHCC), May 24-28, 2017.

 

9.        Plenary Speaker at the International conference on Combinatorics,  Taipei,  May 19-22, 2017.

 

10.    2016 Conference on the advances on Combinatorics and related topic, Xiamen,  Dec. 24-26, 2016.

 

11.    Invited speaker at “Asian Mathematics Conference at Bali”, July 25-29, 2016.

 

12.    One of the organizers for the workshop “International workshops on Knots and Graphs” at Xiamen University, June 24-27, 2016.

 

13.    “Workshop on New Directions for the Tutte Polynomial: Extensions, Interrelations, and Applications” at Royal Holloway University of London, 11th-14th July 2015.

 

14.    The 2015 International Conference on Graph Theory at Fuzhou, China, Apr 18-20, 2015.

 

15.    The Sixth National conference of Combinatorics and Graph Theory in China, South China Normal University, Guangzhou, China, Nov. 8-10, 2014.

 

16.    One of the organizers: International Symposium on Graph Polynomials and their applications, Xiamen University, China, June 27-29, 2014.

 

17.    The third LPY Symposium at NIE, Singapore,  Nov.  18-19, 2013.

 

18.    2013 International and seventh Cross-strait Conference on Graph Theory and Combinatorics, Changsha, China, June 28-July 1, 2013.

 

19.    The International workshop on discrete mathematics in 2012, Fuzhou, China, July 8-10, 2012.

 

20.    The 10th international conference on Matrix Theory and its application, Guiyang, July 20-23, 2012.

 

21.    The national conference on Combinatorics and Graph Theory 2012, Luoyang, July 16-18, 2012.

 

22.    International Conference on Mathematical Chemistry 2010, Xiamen University, Aug 4-7, 2010.

 

23.    International Symposium on Graph Theory and Combinatorial Algorithms (GTCA'2010), Chinese Academy of Sciences, Beijing, July 10-11, 2010.

 

24.    2009 International and Fifth Cross-strait Conference on Graph Theory and Combinatorics,  Tianjin, China, July 29-Aug. 1,  2009.

 

25.    International Workshop on Graph Theory with Applications, Beijing Jiaotong University, China, Dec. 6-7, 2008.

 

26.    Combinatorial and Probabilistic Inequalities, at Isaac Newton Institute of Mathematical Sciences, University of Cambridge, 23 - 27 June 2008.

 

27.    Statistical-Mechanics and Quantum-Field Theory Methods in Combinatorial Enumeration, at Isaac Newton Institute of Mathematical Sciences, University of Cambridge, UK, 21 - 25 April 2008.

 

28.    Combinatorial Identities and their Applications in Statistical Mechanics, at Isaac Newton Institute of Mathematical Sciences, University of  Cambridge, UK, 7 - 11 April 2008.

 

29.    Zeros of Graph Polynomials, at Isaac Newton Institute of Mathematical Sciences, University of  Cambridge, UK, 21 - 25 January 2008.

 

30.    Introductory Cross-Disciplinary Symposium, at Isaac Newton Institute of Mathematical Sciences, University of  Cambridge, UK, 14 - 18 January 2008.

 

31.    One-day seminar at the department of mathematics,  University of Malaya, April 3, 2007.

 

32.    The international conference on Applied Combinatorics and Graph Theory at Xiamen University, China, Dec 21-24, 2006.

 

33.    The workshop of discrete mathematics at Fuzhou University of China, April, 2006.

 

34.    The conference of Logic and computation, Kunming, May, 2005.

 

35.    Asian Mathematical Conference, NUS, Singapore, July 10-23, 2005.

 

36.    2005 International and Third Cross-strait Conference on Graph Theory and Combinatorics, Jinhua, China, June, 2005.

 

37.    AME workshop at Singapore, June 2, 2005.

 

38.    The Eighth Annual International Computing and Combinatorics Conference, August 15-17, 2002.

 

 

Invited talks:

 

 

1.         Invited speaker at the 2019 Xi’an International Workshop on Graphs and Combinatorics/Workshop on Eulerian Subgraphs and Related Problems and Related Problems,  Northwestern Polytechnical University in Xian, China from June 27, 2019 to June 29, 2019.

 

2.        Keynote speaker at the Seminar on graph theory and its application 2019 (SGTA2019) at UPM, Malaysia, April 2019.

 

3.        Invited speaker at the International conference on Graph Theory and Combinatorics at Beijing Jiaotong University, March, 2019.  Plenary speaker, the 5th International Conference on Mathematics, Science, and Education (ICMSE 2018), Oct 8-9, 2018.

 

4.        Hunan First Normal University, July 3, 2018. Changsha University, July 2, 2018.

 

5.        Hunan University, July 1, 2018.  

 

6.        Hunan University of Science and Technology, June 30, 2018.

 

7.        Sichuan Normal University, June 20, 2018.

 

8.        Xiamen Technological University, June 11, 2018.

 

9.        Xiamen University, June 9, 2018.

 

10.    Linyi University, June 3, 2018.

 

11.    Zhejiang University, May 30, 2018.

 

12.    Plenary speaker, The third conference of Combinatorics and Graph Theory at Hunan University, Huanan University, Dec. 9-10, 2017.

 

13.    Invited speaker,  at the 8th Singapore Mathematical Society symposium, Sep. 29, 2017.

 

14.    Plenary Speaker,  at the International conference on Combinatorics,  Taipei,  May 19-22, 2017.

 

15.    Invited speaker at ``2016 Conference on the advances on Combinatorics and related topic”, Xiamen,  Dec. 24-26, 2016.

 

16.    Invited speaker at Zhejiang Normal University, Dec. 12, 2016.

 

17.    Invited talk at “Asian Mathematics Conference” in Bali, July 25-29, 2016.

 

18.    One of the organizers and invited speaker, On flow polynomials with real roots only,  “International workshops on Knots and Graphs” at Xiamen University, June 24-27, 2016.

 

19.    Tutte Polynomials,  Jimei University, China, June 17, 2016.

 

20.    Spanning trees and other structures,  Xiamen University, China, June 16, 2016.

 

21.    Tutte polynomials and others, Hunan University, China,  Dec.  2015.

 

22.    On the number of spanning trees of line graphs , Hunan First Normal University, China,  Dec.  2015.

 

23.    Principal Speaker at “Workshop on New Directions for the Tutte Polynomial: Extensions, Interrelations, and Applications” at Royal Holloway University of London, 11th-14th July 2015.

 

24.    Expressions for the number of spanning trees of the line graph of an arbitrary connected graph, Jimei University, China, June 9, 2015.

 

25.    Expressions for the number of spanning trees of the line graph of an arbitrary connected graph, Xiamen University, China, June 11, 2015.

 

26.    Look for suitable research topics (for undergraduate students), Xiamen University, China, June 11, 2015.

 

27.    Expressions for the number of spanning trees of the line graph of an arbitrary connected graph, South China Normal University, China, June 17, 2015.

 

28.    On flow polynomials having no roots in (1,2), at The 2015 International Conference on Graph Theory at Fuzhou, China, Apr 18-20, 2015.

 

29.    Study on the Real Roots of Flow Polynomials, at International Symposium on Graph Polynomials and their applications, Xiamen University, China, June 27-29, 2014.

 

30.    Optimal problems in geometry, at Min Nan Normal University, Zhangzhou, Fujian, China, June 24, 2014.

 

31.    Nowhere-zero Flows and Flow Polynomials of Graphs, Jimei University, June, 2014.

 

32.    Study on the Real Roots of Flow Polynomials, at Xiamen University, May, 2014.

 

33.    G-parking functions and spanning trees, Jimei University, Xiamen, Dec. 20, 2013.

 

34.    On Flow Polynomials, Hunan University, Changsha, China, June 29, 2013.

35.    Survey on Chromatic Polynomials, Xiamen University, June 27, 2013.

36.    On chromatic polynomials, South China Normal University, June 15, 2013.

37.    On Flow Polynomials, Jinan University, Guangzhou, June 21, 2013.

38.    The introduction to Matroid Theory, Xiamen University, Dec. 12, 2012.

39.    The 3-connectivity of a Graph and the Multiplicity of Zero `2' of its Chromatic Polynomial, at Qinghai Normal University, May 20, 2011.

40.    Chromatic Roots of a Ring of Four Cliques, Jimei University, May 31, 2011.

41.    Relation between Matching Polynomials and Characteristic polynomials, at “International Conference on Mathematical Chemistry 2010”, Xiaman University,  Aug 4-7, 2010.

42.    Survey on the distribution of chromatic zeros,  at “International Symposium on Graph Theory and Combinatorial Algorithms (GTCA'2010)”, Chinese Academy of Sciences, Beijing, July 11, 2010.

43.    On Roots of Chromatic Polynomials and Flow Polynomials of Graphs, at Jimei University, June 25, 2010.

44.    The 3-connectivity of a Graph and the Multiplicity of Zero `2' of its Chromatic Polynomial, at Xiamen University, June 22, 2010.

45.    Matrices and Matching Polynomials, at the center of discrete Mathematics, Fuzhou University, June 2, 2010.

46.    On Zeros of Some Polynomials of Graphs,  at Capital Normal University, Beijing, July 28, 2009.

47.    Bounded locations of Real Zeros of Chromatic Polynomials, at “International Workshop on Graph Theory with Applications” in Beijing Jiaotong University, China, Dec. 6, 2008.

48.    On the Distribution of Complex Zeros of Chromatic Polynomials, at the Department of Mathematics of Xiamen University, China, Nov. 15, 2008.

49.     Bounds for the real zeros of Chromatic polynomials, at the Program “Combinatorics and Statistical Mechanics” in Isaac Newton Institute of Mathematical Sciences, University of Cambridge, UK, June 24, 2008.

50.    Chromatic polynomials of Graphs, at Open University, UK,  June 10, 2008.

51.    Some open problems related to Chromatic polynomials, at the Mathematics Institute of Oxford University, June 3, 2008.

52.    On the shameful conjecture, at the Program “Combinatorics and Statistical Mechanics” in Isaac Newton Institute of Mathematical Sciences, University of Cambridge, UK, May 21, 2008.

53.    On graphs whose chromatic polynomials have no zeros in (1,2), at the Program “Combinatorics and Statistical Mechanics” in Isaac Newton Institute of Mathematical Sciences, University of Cambridge, UK,  Jan 22, 2008.

54.    Domination numbers and zeros of chromatic polynomials, one-day seminar at the department of mathematics, University of Malaysia, April 3, 2007.

55.    Graphs having no chromatic zeros in (1,2),  in the international conference on Applied Combinatorics and Graph Theory at Xiamen University, China, Dec 21-24, 2006.

56.     Bounds for the coefficients of flow polynomials, in the workshop of discrete mathematics at Fuzhou University of China, April, 2006.

57.    Chromatic polynomials, in the conference of Logic and computation (Liu Shenglie’s Lectures) in Kunming, May, 2005.

58.     Chromatic polynomials, a talk in Fujian Normal University, Dec. 2004.

59.    Some open problems on chromatic polynomials, a talk in Xiamen University, Dec., 2004.

60.    Zeros of chromatic polynomials, second talk in Xiamen University, Dec., 2004.

61.    Some open problems on chromatic polynomials, at the Institute of Applied Mathematics, Chinese Academy of Sciences, Beijing, in Dec, 2003.

 

 

Visitors:   The following oversea scholars have visited or will visit NIE for working with me.

 

1.     A/P Martin Kochol, Mathematical Institute of the Slovak academy of Sciences,  25 Jan. - 14 March  2007.

2.     A/P Gordon Royle, University of Western Australia, 10-20 July  2007.

3.     Dr. Jin Xian An, Xiamen University, China, 20 Aug. - 17 Nov.  2007.

4.     Prof. Charles Little,   Massey University, New Zealand, 19 Nov.-7 Dec. 2007.

5.     A/P Jin Xian An, Xiamen University, China, 11 Aug.-6 Sep. 2008.

6.     Prof. Geoffrey Whittle, Victoria University of Wellington, New Zealand, 18-19 Feb. 2009.

7.     Prof. William Jackson, Queen Mary University of London, 2-22 August 2009.

8.     Prof. Carsten Thomassen,  Technical University of Denmark, 6-16 Oct.  2009.

9.     Prof. Yan Weigen, Jimei University, China, 2-26 Feb.  2010.

10.  Prof. Zhou Bo, South China Normal University,   China, 8-29 March 2010.

11.  Prof. Fan Genghua, Fuzhou University,  China,  26-30 April 2010.

12.  Prof. Alan Sokal,  University College London & New York University, 30-31 July  2010.

13.  Prof. Jin Xian An,  Xiamen University, China, 20 May-10 Aug. 2012.

14.  Asst Prof Tatiana Senchonok, Ural Federal University, Yekaterinburg, Russia, 18 Nov.-2 Dec. 2013.

15.  Dr. Ong Siew Hui, University of Malaya, Malaysia,  25-28 Aug., 2014.

16.  Prof. ZHANG LIANZHU, Xiamen University, 23 March-2 April 2015.

17.  Prof. Jin Xian An,  Xiamen University, China, 10 March-2 April 2015.

18.  Asst Prof LU FULIANG, Linyi University, China, 11-26 Aug. 2015.

19.  Professor Zhao Ping, Linyi University, China, 26 Oct.-13 Nov. 2015.

20.  Prof. Edy Tri BASKORO, Institut Teknologi Bandung, Indonesia, 26-30 Oct. 2015. 

21.  Professor Wang Yi, Dalian University Of Technology, China, 3-20 Nov. 2015.

22. Professor Graham Ernest Farr, Monash University, Australia, 15-26 Feb. 2016.

23.  Prof. Jin Xian An,  Xiamen University, China, 28 March-8 April 2016.

24.  Prof. Chen Haiyan,  Jimei University, China, 28 March-8 April 2016.

25.  Professor Zhu Baoxuan, Jiangsu Normal University, China, 15-22 May 2016.

26.  A/P Lin Lishuang, Jimei University, China, 10-19 Feb. 2017.

27.  A/P Lin Xiaoxia, Jimei University, China, 10-19 Feb. 2017.

28.  A/P Ouyang Zhangdong, Hunan First Normal University, China, 30 June 2017-29 June 2018.

29. A/P Lin Yuqing, University of Newcastle, Australia, 2-8 Oct. 2017. 

30.  A/P Helin Gong, Zhejiang Industry Polytechnic College, China, 16 Oct. 2017 to 15 Apr. 2018. 

31.  Dr. Bo Ning, Tianjin University, China, 1 Dec. 2017 - 20 June 2018.

32. Dr. Ge Jun, Sichuan Normal University,  22 Jan. 2018-21 May 2018.

33. Dr. Xie Jinshan, Longyan University, Fujian, China, 20 March-20 Sep. 2018.

34. A/P Ge June, Sichuan Normal University,  Aug. 27, 2018-Aug 26, 2020.