Results 41 to 50 of about 520,977 (330)

Design method of nonsubsampled graph filter banks

open access: yesDianzi Jishu Yingyong, 2019
In order to overcome the problem that it is difficult to accurately define the downsampling operation for a generalized graph signal in graph filter banks, this paper focuses on the design algorithm of nonsubsampled graph filter banks.
Yang Sheng
doaj   +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

A note on pm-compact bipartite graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2014
A graph is called perfect matching compact (briefly, PM-compact), if its perfect matching graph is complete. Matching-covered PM-compact bipartite graphs have been characterized. In this paper, we show that any PM-compact bipartite graph G with δ (G) ≥ 2
Liu Jinfeng, Wang Xiumei
doaj   +1 more source

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

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

Finding a Strong Stable Set or a Meyniel Obstruction in any Graph [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
A strong stable set in a graph $G$ is a stable set that contains a vertex of every maximal clique of $G$. A Meyniel obstruction is an odd circuit with at least five vertices and at most one chord.
Kathie Cameron, Jack Edmonds
doaj   +1 more source

Impact of a senior research thesis on students' perceptions of scientific inquiry in distinct student populations

open access: yesFEBS Open Bio, EarlyView.
This study addressed how a senior research thesis is perceived by undergraduate students. It assessed students' perception of research skills, epistemological beliefs, and career goals in Biochemistry (science) and BDC (science‐business) students. Completing a thesis improved confidence in research skills, resilience, scientific identity, closed gender‐
Celeste Suart   +4 more
wiley   +1 more source

Even cycles and perfect matchings in claw-free plane graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2020
Lov{\'a}sz showed that a matching covered graph $G$ has an ear decomposition starting with an arbitrary edge of $G$. Let $G$ be a graph which has a perfect matching.
Shanshan Zhang   +2 more
doaj   +1 more source

Perfect state transfer, graph products and equitable partitions [PDF]

open access: yes, 2010
We describe new constructions of graphs which exhibit perfect state transfer on continuous-time quantum walks. Our constructions are based on variants of the double cones [BCMS09,ANOPRT10,ANOPRT09] and the Cartesian graph products (which includes the n ...
Ge, Yang   +3 more
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