翁志文演講的 powerpoint

2017/7/19, 淡江大學, Spectral bounds obtained by reweighting entries in a row of a nonnegative matrix, (5th ITCDM 2017, 2017/7/18-21)

2015/12/10, 交大, An extending result on spectral radius of bipartite graphs,  (2015 Workshop on Spectral Graph Theory and Its Applications, 2015/12/9-10)

2015/7/16, Pondicherry India, Degree Pairs of a Graph, (International Conference on Graph Theory and its Application, 2015/7/15-16)

2015/7/11, Chennai India, Quasi-spectral characterizations of graphs, (The Fourth India-Taiwan Conference on Discrete Mathematics, July 10-13, 2015)

2015/6/30, 高雄, The degree pairs of a graph, (2015 年圖論與組合學國際研討會暨第八屆海峽兩岸圖論與組合學研討會, 6/27-30), (相片)

2013/12/7, 高雄, Spectral Radius and Degree Sequence of a Bipartite Graph, (2013 年數學年會, 中山大學, 12/6-8)

2013/8/19, 高雄, Spectral Graph Theory and Its Applications, (2013 組合新苗研討會, 高雄師範大學, 8/10-11, 2013),     (相片)

2013/7/12, 交大, Spectral characterization of graphs, (2013 International Conference on Combinatorics, 7/11-12, 2013),     (相片)

2013/6/28, 長沙, Spectral characterization of graphs, (第七屆海峽兩岸圖論與組合會議, 湖南師範大學, 6/28-30, 2013)

2013/5/11, 高雄, A characterization of bipartite distance-regular graphs, (2013 南區組合數學研討會, 中山大學, 2013, 5/11)

2012/8/19,  上海, A few inequalities related to spectral excess theorem, (2012 Shanghai Conference on Algebraic Combinatorics, 上海, 8/17-22, 2012)

2011/12/17, 高雄, Inequalities Related to Spectral Graph Theory, 編碼相關理論及其應用研討會(2011)-19, 義守大學, 2011/12/17-18

2011/9/10, 孔巴托, The spectral excess theorem for general graphs, (SECOND INDIA-TAIWAN CONFERENCE ON DISCRETE MATHEMATICS, Coimbatore, September 8-11, 2011)   (EXTENDED ABSTRACTS)

2011/6/29, 新竹, D-bounded property in a distance-regular graphs, (第六屆海峽兩岸圖論與組合學研討會, 交通大學, 2011, 6/27-30) (相片)

2011/5/20, 台北, Reeder's puzzle on a tree, (The International Conference on Designs, Matrices and Enumerative Combinatorics, 中研院, 2011, 5/19-22)

2010/8/7, 台北, Lit-only -game and its dual game on a graph, (2010 組合數學新苗研討會, 台大 2010, 8/7-8)

2010/7/12., 慶州, Pooling designs with d-disjunct property and block weight d + 1, (ALGEBRAIC AND GEOMETRIC COMBINATORICS CONFERENCE 2010, Concorde Hotel,Gyeongju, South Korea, (Photo)

2009/12/6, 中正大學, Pooling design and its construction, (2009 年數學學術研討會暨中華民國數學會年會, 2009/12/4-6 ).

2009/11/10 ,  台灣大學, D-bounded distance-regular graphs,  摘要,    (India-Taiwan Conference on Discrete Mathematics, 2009/11/9-12) 

2009/7/30, 南開大學, The Lit-Only Sigma Game on a Simple Graph  (2009年图论与组合学国 际学术会议暨第五届海峡两岸图论与组合学学术会议 (2009年7月29日至八月一日))

2009/7/28. 北京師大, Nontrivial Pooling Designs (2009/7/24-28 順道訪問北京師大王愷順教授) (相片)

2009/2/10, 釜山, The flipping puzzle on a simple graph (Korea-Japan Workshop on Algebra and Combinatorics)

2009/2/11-13, 浦項, The D-bounded Property on a Distance-regular Graph with a1=0, a2\not=0   (順道訪問 POSTECH)

2008/8/20, Oisterwijk, The flipping puzzle on a graph    (Geometric and Algebraic Combinatorics 4, Oisterwijk, The Netherlands, August 17-August 22, 2008

2007/6/27 台大 Regular Graphs with Four eigenvalues(2007年圖論與組合學國際研討會暨第四屆海峽兩岸圖論與組合學研 討會(2007年6月24至29日) )

2007/6/7 橫濱  Construct pooling designs from Hermitian forms graphs (相片) (International Workshop on Combinatorics 2007, Keio University Yagami Campus (June 6-8), Kyoto University Yoshida Campus(June 10-14), Japan)

2006/12/10 台北 The q-analogue problems in different aspects (2006 Mathmematical Meeting and Annual Meeting of the Mathematical Society of ROC)

2006/6/26 仙台 Triangle-free Distance-regular Graphs (Algebraic Combinatorics, An International Conference in Honor of Eiichi Bannai's 60th Birthday)

2005/6/28 金華 More Examples of Pooling Spaces(2005 年圖論與組合學國際學術會議季第三屆海峽兩岸圖論與組合學術會議, 金華, 中國 26-30, 2005) 

2004/7/21 釜山 Bidiagonal Triples and the quantum group U_q(sl_2) (2004 Com2MaC Conference on Association Schemes, Codes and Designs, Pusan, Korea: July 19-23, 2004)

 

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