Results 51 to 60 of about 64,086 (307)

Non-perfect maze generation using Kruskal algorithm

open access: yesJurnal Natural, 2021
A non-perfect maze is a maze that contains loop or cycle and has no isolated cell. A non-perfect maze is an alternative to obtain a maze that cannot be satisfied by perfect maze.
MAHYUS IHSAN   +4 more
doaj   +1 more source

The ωψ-perfection of graphs

open access: yesElectronic Notes in Discrete Mathematics, 2013
Abstract In this paper we study a natural generalization for the perfection of graphs to other interesting parameters related with colorations. This generalization was introduced partially by Christen and Selkow in 1979 and Yegnanarayanan in 2001. Let a , b ∈ { ω , χ , Γ , α , ψ } where ω is the clique number, χ is the chromatic ...
Gabriela Araujo-Pardo   +1 more
openaire   +1 more source

A STUDY ON PERFECT ITALIAN DOMINATION OF GRAPHS AND THEIR COMPLEMENTS

open access: yesUral Mathematical Journal
Perfect Italian Domination is a type of vertex domination  which can also be viewed as a graph labelling problem. The vertices of a graph \(G\) are labelled by 0, 1 or 2 in such a way that a vertex labelled 0 should have a neighbourhood with exactly two ...
Agnes Poovathingal   +1 more
doaj   +1 more source

Bipartite-Perfect Graphs

open access: yesElectronic Notes in Discrete Mathematics, 1999
Two graphs \(G\) and \(H\) on the vertex set \(V\) are \(P_4\)-isomorphic if there is a permutation \(\pi\) on \(V\) such that, for all subsets \(S\) of \(V\), \(S\) induces a chordless \(P_4\) in \(G\) if and only if \(\pi (S)\) induces a \(P_4\) in \(H\). The author characterizes all graphs \(P_4\)-isomorphic to a bipartite graph. For example, we can
openaire   +1 more source

Existence of perfect matchings in a plane bipartite graph [PDF]

open access: yes, 1996
summary:We give a necessary and sufficient condition for the existence of perfect matchings in a plane bipartite graph in terms of elementary edge-cut, which extends the result for the existence of perfect matchings in a hexagonal system given in the ...
Che, Zhongyuan, Kochol, Martin
core   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

open access: yesFEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli   +8 more
wiley   +1 more source

Choice-perfect graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2013
Given a graph G = (V,E) and a set Lv of admissible colors for each vertex v ∈ V (termed the list at v), a list coloring of G is a (proper) vertex coloring ϕ : V → S v2V Lv such that ϕ(v) ∈ Lv for all v ∈ V and ϕ(u) 6= ϕ(v) for all uv ∈ E. If such a ϕ exists, G is said to be list colorable.
openaire   +2 more sources

YIPFα1A expression is regulated by multilayered molecular mechanisms

open access: yesFEBS Open Bio, EarlyView.
YIPFα1A, a five‐pass Golgi protein, is regulated at multiple layers. (1) Rare‐codon enrichment drives translation‐coupled mRNA decay. (2) A proximal 3′‐UTR element stabilizes mRNA. (3) A distal 3′‐UTR element included by alternate poly(A) site usage represses translation, which can be overridden by the proximal 3′‐UTR element.
Tokio Takaji   +2 more
wiley   +1 more source

Conditional Strong Matching Preclusion of the Alternating Group Graph

open access: yesTheory and Applications of Graphs, 2019
The strong matching preclusion number of a graph is the minimum number of vertices and edges whose deletion results in a graph that has neither perfect matchings nor almost-perfect matchings.
Mohamad Adballah, Eddie Cheng
doaj   +1 more source

Graph perfect [PDF]

open access: yes, 1994
Suatu graph G, diambil jumlah titik dari clique maksimal sebagai dasar dalam pewarnaan titik-titik pada graph tersebut. Banyaknya warna paling sedikit yang digunakan untuk 3Dewarnaan tersebut dibandingkan dengan jumlah titik dari clique maksimal.
Mulyani , Sri
core  

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