科研成果: 近期主持项目(项目级别、项目名称、实施年限等) 1.国家自然科学青年基金(11201432):基于图的不变量与子图结构的谱极值问题研究,2013-2015. 2.中国博士后科学基金第50批面上资助(2011M501185):图谱理论研究中的极图问题及其应用,2011-2013. 3.中国博士后科学基金第5批特别资助(2012T50636):基于图的结构参数的谱极值问题研究及其应用,2012-2013. 4.河南省教育厅科学技术研究重点项目(15A110003):谱图理论相关专题研究及其在复杂网络中的应用,2015-2016. 代表性论文(作者、题目、杂志名缩写、卷号、期号、发表年限、页码等) 1.刘瑞芳, 邵慰慈,General Randic matrix and general Randic incident matrix, Discrete Applied Mathematics 186 (2015) 168-175. 2.刘瑞芳, 邵慰慈, 薛杰, Sufficient spectral conditions on Hamiltonian and traceable graphs, Linear Algebra and its Applications 467 (2015)254-266. 3.林辉球, 刘瑞芳, 鲁习文, The inertia and energy of the distance matrix of a connected graph, Linear Algebra and its Applications 467 (2015) 29-39. 4.刘瑞芳, 贾会才, 原晋江, First eigenvalue of nonsingular mixed graphs with given number of pendant vertices, Linear Algrbra and its Applications 453 (2014) 28-43. 5.刘瑞芳, 万海霞, 原晋江, 贾会才, The least eigenvalue of the signless Laplacian of non-bipartite unicyclic graphs with k pendant vertices, Electronic Journal of Linear Algebra 26 (2013) 333-344. 6.郭利涛, 刘瑞芳, 郭晓峰, Super λ3-optimality of regular graphs, Applied Mathematics Letters 25 (2012) 128-132. 7.刘瑞芳, 翟明清, 束金龙, The least eigenvalue of unicyclic graphs with n vertices and k pendant vertices, Linear Algebra and its Applications 431(2009) 657-665. 8.刘瑞芳, 陆中华, 束金龙, The minimal Laplacian spectral radius of trees with a given diameter, Theoretical Computer Science 410 (2009)78-83. |