[25] S.-M. Ma, J.-Y. Liu, J. Yeh, Y.-N. Yeh, Eulerian-type polynomials over Stirling permutations and box sorting algorithm, J. Combin. Theory Ser. A, 220 (2026), 106132. (引入了盒子排序算法和一个新的微分算子方法。) [24] S.-M. Ma, H. Qi, J. Yeh, Y.-N. Yeh,Stirling permutation codes. II, J. Combin. Theory Ser. A, 217 (2026) 106093.(利用斯特林编码发现了一个包含十七个变量的欧拉型多项式的组合展开式。) [23] S.-M. Ma, H. Bian, J.-Y. Liu, J. Yeh, Y.-N. Yeh, Determinantal representations of enumerative polynomials, Discrete Appl. Math., 378 (2026), 682-702. (首次把形式文法引入到矩阵理论的研究中。) [22] S.-M. Ma, H. Qi, J. Yeh, Y.-N. Yeh, On the joint distributions of succession and Eulerian statistics, Advances in Applied Mathematics, 162 (2025) 102772. (定义了排列统计量proper left-to-right minimum数,发现它与经典的统计量succession数是对称分布的。) [21] S.-M. Ma, H. Qi, J. Yeh, Y.-N. Yeh, Positivity of Narayana polynomials and Eulerian polynomials, Advances in Applied Mathematics, 154 (2024) 102656. (探讨了伽玛正性和交错伽玛正性的联系。) [20] G.-N. Han, S.-M. Ma, Eulerian polynomials and the g-indices of Young tableaux, Proc. Amer. Math. Soc., 152 (2024), 1437-1449. (首次把形式文法引入到杨表的研究中。) [19]S.-M. Ma, J. Ma, J. Yeh, Y.-N. Yeh, Excedance-type polynomials, gamma positivity and alternatingly increasing property, European J. Combin., 118 (2024), 103869. (建立了伽玛正性﹑双伽玛正性以及交错递增性这三个性质的联系,并发现十几类不同组合结构上的计数多项式都可以通过变量替换转化成对称群上计数多项式。) [18]S.-M. Ma, H. Qi, J. Yeh, Y.-N. Yeh, Commuting Eulerian operators, Discrete Appl. Math., 342 (2024), 355-361. (发现了一组可交换的欧拉算子) [17]S.-M. Ma, H. Qi, J. Yeh, Y.-N. Yeh, Stirling permutation codes, J. Combin. Theory Ser. A, 199 (2023), 105777. (给出了斯特林编码的定义,并用斯特林编码以非常简洁的方式发现了斯特林排列上十几个同分布的多元统计量。) [16]S.-M. Ma, J. Ma, J. Yeh, Y.-N. Yeh, Eulerian pairs and Eulerian recurrence systems, Discrete Math., 345 (2022), 112716. (给出了Eulerian pair和Hermite-Biehler pair的定义。) [15]S.-M. Ma, J. Ma, Y.-N. Yeh, R.R. Zhou, Jacobian elliptic functions and a family of bivariate peak polynomials, European J. Combin., 97 (2021), 103371. (引入了双伽玛正性的定义,证明了雅克比椭圆函数的泰勒展开式的系数多项式是单峰的。) [14] Z. Lin, J. Ma, S.-M. Ma, Y. Zhou, Weakly increasing trees on a multiset, Advances in applied mathematics, 129 (2021), 102206. (作为平面树和递增树的统一拓展,定义了弱递增树,研究了M-Eulerian-Narayana多项式的性质。) [13] S.-M. Ma, J. Ma, Y.-N. Yeh, David-Barton type identities and alternating run polynomials, Advances in applied mathematics, 114 (2020), 101978. (给出了David-Barton型恒等式的定义,发现了任一具有伽玛正性的多项式都存在一个David-Barton型的恒等式。) [12] S.-M. Ma, T. Mansour, D.G.L. Wang, Y.-N. Yeh, Several variants of the Dumont differential system and permutation statistics, Science China Mathematics, 62(10) (2019), 2033-2052. (探讨了Dumont微分系统与排列统计理论的联系。) [11] S.-M. Ma, J. Ma, Y.-N. Yeh, Gamma-positivity and partial gamma-positivity of descent-type polynomials, J. Combin. Theory Ser. A, 167 (2019), 257-293. (给出了文法变换法的定义,并利用该方法非常简洁地推导出一些具有丰富组合意义的展开式。) [10] S.-M. Ma, J. Ma, Y.-N. Yeh, B.-X. Zhu, Context-free grammars for several polynomials associated with Eulerian polynomials, Electron. J. Combin., 25(1) (2018), P1.31. (系统地给出了一些欧拉型多项式的文法。) [9] S.-M. Ma, Y.-N. Yeh, Eulerian polynomials, Stirling permutations of the second kind and perfect matchings, Electron. J. Combin., 24(4) (2017), P4.27. (定义了第二类斯特林排列和斯特林错排。) [8] S.-M. Ma, Y.-N. Yeh, The peak statistics on simsun permutations, Electron. J. Combin., 23(2) (2016), P2.14. (系统地研究了simsun排列上的峰统计量。) [7] S.-M. Ma, Y.-N. Yeh, Stirling permutations, cycle structure of permutations and perfect matchings, Electron. J. Combin., 22(4) (2015), P4.43. (建立了斯特林排列、完美匹配以及对称群中加权的排列之间的双射。) [6] R.A. Brualdi, S-M. Ma, Enumeration of involutions by descents and symmetric matrices, European J. Combin., 43 (2015), 220-228. (利用组合算法构建了具有给定降位数的对合和对称矩阵的联系。) [5]S.-M. Ma, T. Mansour, The 1/k-Eulerian polynomials and k-Stirling permutations, Discrete Math., 338 (2015), 1468-1472. (定义了上升平台统计量,发现1/k-欧拉多项式是每个元素都出现k次的斯特林排列上的上升平台多项式。) [4] S.-M. Ma, Some combinatorial arrays generated by context-free grammars, European J. Combin., 34(7) (2013), 1081-1091. (发现了一些新的文法。) [3]S.-M. Ma, An explicit formula for the number of permutations with a given number of alternating runs, J. Combin. Theory Ser. A, 119 (2012), 1660-1664. (利用三角函数非常简洁地给出了具有给定单调子列数的排列个数的显式。) [2]S.-M. Ma, Derivative polynomials and enumeration of permutations by number of interior and left peaks, Discrete Math., 312 (2012), 405-412. (发现了三角函数的微分多项式与排列统计量的联系。) [1] S.-M. Ma, Y. Wang, q-Eulerian polynomials and polynomials with only real zeros, Electron. J. Combin., 15 (2008), R17. (刻画了零点重数和零点区间的关系。) |