Results 11 to 20 of about 197 (156)

Pseudomonas aeruginosa isolation from dog grooming products used by private owners or by professional pet grooming salons: prevalence and risk factors

open access: yesVeterinary Dermatology, Volume 33, Issue 4, Page 316-e73, August 2022., 2022
Abstract Background Pseudomonas aeruginosa is the most commonly isolated bacterium from skin lesions of dogs with post‐grooming furunculosis (PGF). It is frequently found in human hair and skin care products, and may pose a health risk to consumers. Information regarding the prevalence of P. aeruginosa contamination of dog grooming products is lacking.
Elad Perry   +5 more
wiley   +1 more source

Degree Sum Condition for the Existence of Spanning k-Trees in Star-Free Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2022
For an integer k ≥ 2, a k-tree T is defined as a tree with maximum degree at most k. If a k-tree T spans a graph G, then T is called a spanning k-tree of G.
Furuya Michitaka   +5 more
doaj   +1 more source

The multiplicative Zagreb indices of graph operations [PDF]

open access: yes, 2013
Recently, Todeschini et al. (Novel Molecular Structure Descriptors - Theory and Applications I, pp. 73-100, 2010), Todeschini and Consonni (MATCH Commun. Math. Comput. Chem.
Das, Kinkar C., Çevik, Ahmet Sinan
core   +2 more sources

Saturation Spectrum of Paths and Stars

open access: yesDiscussiones Mathematicae Graph Theory, 2017
A graph G is H-saturated if H is not a subgraph of G but the addition of any edge from G̅ to G results in a copy of H. The minimum size of an H-saturated graph on n vertices is denoted sat(n,H), while the maximum size is the well studied extremal number,
Faudree Jill   +4 more
doaj   +1 more source

On Incidence Coloring of Complete Multipartite and Semicubic Bipartite Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2018
In the paper, we show that the incidence chromatic number χi of a complete k-partite graph is at most Δ + 2 (i.e., proving the incidence coloring conjecture for these graphs) and it is equal to Δ + 1 if and only if the smallest part has only one vertex ...
Janczewski Robert   +2 more
doaj   +1 more source

On death processes and urn models [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2012
We use death processes and embeddings into continuous time in order to analyze several urn models with a diminishing content. In particular we discuss generalizations of the pill's problem, originally introduced by Knuth and McCarthy, and generalizations
Markus Kuba, Alois Panholzer
doaj   +1 more source

Banhatti, revan and hyper-indices of silicon carbide Si2C3-III[n,m]

open access: yesOpen Chemistry, 2021
In recent years, several structure-based properties of the molecular graphs are understood through the chemical graph theory. The molecular graph GG of a molecule consists of vertices and edges, where vertices represent the atoms in a molecule and edges ...
Zhao Dongming   +6 more
doaj   +1 more source

The Arithmetic Tutte polynomial of two matrices associated to Trees

open access: yesSpecial Matrices, 2018
Arithmetic matroids arising from a list A of integral vectors in Zn are of recent interest and the arithmetic Tutte polynomial MA(x, y) of A is a fundamental invariant with deep connections to several areas. In this work, we consider two lists of vectors
Bapat R. B.   +1 more
doaj   +1 more source

A combinatorial expression for the group inverse of symmetric M-matrices

open access: yesSpecial Matrices, 2021
By using combinatorial techniques, we obtain an extension of the matrix-tree theorem for general symmetric M-matrices with no restrictions, this means that we do not have to assume the diagonally dominance hypothesis.
Carmona A., Encinas A.M., Mitjana M.
doaj   +1 more source

Lazy tournaments and multidegrees of a projective embedding of \(\overline{M}_{0,n}\) [PDF]

open access: yes, 2023
We consider the (iterated) Kapranov embedding \(\Omega_n:\overline{M}_{0,n+3} \hookrightarrow \mathbb{P}^1 \times \cdots \times \mathbb{P}^n\), where \(\overline{M}_{0,n+3}\) is the moduli space of stable genus \(0\) curves with \(n+3\) marked points. In
Levinson, Jake   +6 more
core   +1 more source

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