Results 11 to 20 of about 163 (126)

Algorithms for minimum flows [PDF]

open access: yesComputer Science Journal of Moldova, 2001
We present a generic preflow algorithm and several implementations of it, that solve the minimum flow problem in O(n2m) time.
Eleonor Ciurea, Laura Ciupal
doaj   +1 more source

Quasirandom Graphs and the Pantograph Equation [PDF]

open access: yesAmerican Mathematical Monthly, 2021
Shapira A, Tyomkyn M.
exaly   +2 more sources

An extremal problem on potentially K_p,1,1-graphic sequences [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
A sequence S is potentially K_p,1,1 graphical if it has a realization containing a K_p,1,1 as a subgraph, where K_p,1,1 is a complete 3-partite graph with partition sizes p,1,1.
Chunhui Lai
doaj   +1 more source

Transdermal drug delivery in horses: An in vitro comparison of skin structure and permeation of two model drugs at various anatomical sites

open access: yesVeterinary Dermatology, Volume 34, Issue 3, Page 235-245, June 2023., 2023
Background – Oral and parenteral drug delivery in horses can be difficult. Equine‐specific transdermal drug formulations offer improved ease of treatment; development of such formulations requires a deeper understanding of the structural and chemical tissue barrier of horse skin. Hypothesis/Objectives – To compare the structural composition and barrier
Samuel C. Bizley   +3 more
wiley   +1 more source

The extremal number of longer subdivisions

open access: yesBulletin of the London Mathematical Society, Volume 53, Issue 1, Page 108-118, February 2021., 2021
Abstract For a multigraph F, the k‐subdivision of F is the graph obtained by replacing the edges of F with pairwise internally vertex‐disjoint paths of length k+1. Conlon and Lee conjectured that if k is even, then the (k−1)‐subdivision of any multigraph has extremal number O(n1+1k), and moreover, that for any simple graph F there exists ε>0 such that ...
Oliver Janzer
wiley   +1 more source

Solutions to problems about potentially Ks,t-bigraphic pair

open access: yesOpen Mathematics, 2022
Let S=(a1,…,am;b1,…,bn)S=\left({a}_{1},\ldots ,{a}_{m};\hspace{0.33em}{b}_{1},\ldots ,{b}_{n}), where a1,…,am{a}_{1},\ldots ,{a}_{m} and b1,…,bn{b}_{1},\ldots ,{b}_{n} are two nonincreasing sequences of nonnegative integers. The pair S=(a1,…,am;b1,…,bn)S=
Yin Jian-Hua, Zhang Liang
doaj   +1 more source

The Minimum Size of a Graph with Given Tree Connectivity

open access: yesDiscussiones Mathematicae Graph Theory, 2021
For a graph G = (V, E) and a set S ⊆ V of at least two vertices, an S-tree is a such subgraph T of G that is a tree with S ⊆ V (T). Two S-trees T1 and T2 are said to be internally disjoint if E(T1) ∩ E(T2) = ∅ and V (T1) ∩ V (T2) = S, and edge-disjoint ...
Sun Yuefang, Sheng Bin, Jin Zemin
doaj   +1 more source

THE EXACT MINIMUM NUMBER OF TRIANGLES IN GRAPHS WITH GIVEN ORDER AND SIZE

open access: yesForum of Mathematics, Pi, 2020
What is the minimum number of triangles in a graph of given order and size? Motivated by earlier results of Mantel and Turán, Rademacher solved the first nontrivial case of this problem in 1941.
HONG LIU   +2 more
doaj   +1 more source

Hereditary Equality of Domination and Exponential Domination in Subcubic Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2021
Let γ(G) and γe(G) denote the domination number and exponential domination number of graph G, respectively. Henning et al., in [Hereditary equality of domination and exponential domination, Discuss. Math. Graph Theory 38 (2018) 275–285] gave a conjecture:
Chen Xue-Gang, Wang Yu-Feng, Wu Xiao-Fei
doaj   +1 more source

Capture-Time Extremal Cop-Win Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2021
We investigate extremal graphs related to the game of Cops and Robbers. We focus on graphs where a single cop can catch the robber; such graphs are called cop-win.
Offner David, Ojakian Kerry
doaj   +1 more source

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