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Digraphs with maximum number of paths and cycles

โœ Scribed by Yehoshua Perl


Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
482 KB
Volume
17
Category
Article
ISSN
0028-3045

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๐Ÿ“œ SIMILAR VOLUMES


Tools for studying paths and cycles in d
โœ Delorme, C.; Ordaz, O.; Quiroz, D. ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 251 KB

The main goal of this work was to describe the basic elements constituting a specialized knowledge base in the field of paths and circuits in digraphs. This knowledge base contains commented on examples with textual and graphical descriptions, invariants, relations among invariants, and theorems. It

The Cycle-Path Indicator Polynomial of a
โœ Ottavio M. D'Antona; Emanuele Munarini ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 126 KB

A cycle-path cover of a digraph D is a spanning subgraph made of disjoint cycles and paths. In order to count such covers by types we introduce the cyclepath indicator polynomial of D. We show that this polynomial can be obtained by a deletion-contraction recurrence relation. Then we study some spec

On the maximum number of cycles in a pla
โœ R. E. L. Aldred; Carsten Thomassen ๐Ÿ“‚ Article ๐Ÿ“… 2008 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 142 KB ๐Ÿ‘ 2 views

## Abstract Let __G__ be a graph on __p__ vertices with __q__ edges and let __r__โ€‰=โ€‰__q__โ€‰โˆ’โ€‰__p__โ€‰=โ€‰1. We show that __G__ has at most ${15\over 16} 2^{r}$ cycles. We also show that if __G__ is planar, then __G__ has at most 2^__r__โ€‰โˆ’โ€‰1^โ€‰=โ€‰__o__(2^__r__โ€‰โˆ’โ€‰1^) cycles. The planar result is best possib

The Square of Paths and Cycles
โœ G.H. Fan; H.A. Kierstead ๐Ÿ“‚ Article ๐Ÿ“… 1995 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 388 KB

The square of a path (cycle) is the graph obtained by joining every pair of vertices of distance two in the path (cycle). Let \(G\) be a graph on \(n\) vertices with minimum degree \(\delta(G)\). Posa conjectured that if \(\delta(G) \geqslant \frac{2}{3} n\), then \(G\) contains the square of a hami

On the Maximum Number of Independent Cyc
โœ Hong Wang ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 404 KB

Let G=(V 1 , V 2 ; E ) be a bipartite graph with |V 1 |= |V 2 | =n 2k, where k is a positive integer. Suppose that the minimum degree of G is at least k+1. We show that if n>2k, then G contains k vertex-disjoint cycles. We also show that if n=2k, then G contains k&1 quadrilaterals and a path of orde