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V. A. Voblyi 《Mathematical Notes》2012,92(5-6):619-623
Explicit formulas for the number of labeled bicyclic and tricyclic Eulerian graphs and for the number of labeled tricyclic Eulerian blocks are obtained. Many-vertex asymptotics for these numbers are found. 相似文献
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V. A. Voblyi 《Mathematical Notes》2017,101(5-6):790-794
Explicit expressions for the numbers of labeled geodetic bicyclic, tricyclic, and tetracyclic graphs with a given number of vertices are obtained. 相似文献
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The class of outerplanar graphs is used for testing the average complexity of algorithms on graphs. A random labeled outerplanar graph can be generated by a polynomial algorithm based on the results of an enumeration of such graphs. By a bicyclic (tricyclic) graph we mean a connected graph with cyclomatic number 2 (respectively, 3). We find explicit formulas for the number of labeled connected outerplanar bicyclic and tricyclic graphs with n vertices and also obtain asymptotics for the number of these graphs for large n. Moreover, we obtain explicit formulas for the number of labeled outerplanar bicyclic and tricyclic n-vertex blocks and deduce the corresponding asymptotics for large n. 相似文献
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Journal of Applied and Industrial Mathematics - We deduce an explicit formula for the number of labeled series-parallel $$k $$ -cyclic $$n $$ -vertex $$2 $$ -connected graphs and find the... 相似文献
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Mathematical Notes - 相似文献
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V. A. Voblyi 《Mathematical Notes》1991,49(3):237-244
Translated from Matematicheskie Zametki, Vol. 49, No. 3, pp. 12–22, March, 1991. 相似文献
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The exact and asymptotic formulas are obtained for the number of block-cactus graphs and Eulerian block-cactus graphs with a given number of vertices. 相似文献
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V. A. Voblyi 《Mathematical Notes》1970,8(6):900-906
This paper presents an investigation of the asymptotic stability of a linear system of ordinary differential equations in which the principal part is a Jordan matrix with variable coefficients and the perturbation matrix can have an arbitrary structure.Translated from Matematicheskie Zametki, Vol. 8, No. 6, pp. 761–772, December, 1970.The author wishes to thank A. A. Abramov for his interest in this work and for his many useful suggestions. 相似文献