Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Rong-Ying Pan"'
Publikováno v:
Discrete Applied Mathematics. 304:23-31
In this paper, we consider trees of order n with a given number of vertices of maximum degree and solve the minimal extremal problem for the Wiener index on that class. Characteristics of the extremal structures are presented, some directly from prev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60de7db98d16bcb9e0bab3badeafa739
https://doi.org/10.1016/j.dam.2021.07.019
https://doi.org/10.1016/j.dam.2021.07.019
Publikováno v:
Discrete Mathematics, Algorithms and Applications. :185-191
The signless Laplacian matrix of a graph is the sum of its degree diagonal and adjacency matrices. In this paper, we present a sharp upper bound for the spectral radius of the adjacency matrix of a graph. Then this result and other known results are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2c2b9596a213c64055fa84205f2f084
https://doi.org/10.1142/s1793830911001152
https://doi.org/10.1142/s1793830911001152
Autor:
Xiao-dong Zhang, Rong-ying Pan
Publikováno v:
Journal of Shanghai Jiaotong University (Science). 14:632-634
In this note, we show that the image of Laplcian eigenmap in 2-dimensional Edclidean space is lied in a parabola.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba967d397e6b50f79ec8ba22da2e1582
https://doi.org/10.1007/s12204-009-0632-z
https://doi.org/10.1007/s12204-009-0632-z
In this paper, we investigate some relations between the invariants (including vertex and edge connectivity and forwarding indices) of a graph and its Laplacian eigenvalues. In addition, we present a sufficient condition for the existence of Hamilton
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebf52d3d8dff3aff57df715d4faddf19
