Results 61 to 70 of about 27,993 (181)
Skew-signings of positive weighted digraphs
Arab Journal of Mathematical Sciences, 2018 An arc-weighted digraph is a pair (D , ω) where D is a digraph and ω is an arc-weight function that assigns to each arc u v of D a nonzero real number ω (u v) .
Kawtar Attas +2 more
doaj +1 more source
On cohomology theory of (di)graphs [PDF]
, 2014 To a digraph with a choice of certain integral basis, we construct a CW complex, whose integral singular cohomology is canonically isomorphic to the path cohomology of the digraph as introduced in \cite{GLMY}.
Huang, An, Yau, Shing-Tung
core
Energy Science &Engineering, Volume 14, Issue 1, Page 236-256, January 2026.The study analyzes barriers to electric vehicle growth in India using DEMATEL and ANP. It distinguishes cause‐and‐effect barriers and ranks them. Major barriers include poor charging infrastructure and high costs. ABSTRACT This study employs a hybrid technique based on the Decision‐Making Trial Evaluation Laboratory (DEMATEL), Analytic Network Process (
Sanjeev Kumar +6 more
wiley +1 more source
On Single Valued Neutrosophic Signed Digraph and its applications [PDF]
Neutrosophic Sets and Systems, 2018 The development of the theory of the single valued neutrosophic (SVN) digraph is done in this paper. Also this paper introduces the concept of SVN signed digraph.
K. Sinha, P. Majumdar
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Domination in Fuzzy Directed Graphs
Mathematics, 2021 A new domination parameter in a fuzzy digraph is proposed to espouse a contribution in the domain of domination in a fuzzy graph and a directed graph. Let GD*=V,A be a directed simple graph, where V is a finite nonempty set and A=x,y:x,y∈V,x≠y.
Enrico Enriquez +4 more
doaj +1 more source
Unpacking Entrepreneurial Ecosystem Elements: Insights Into Drivers of Entrepreneurial Activity
Thunderbird International Business Review, Volume 68, Issue 1, Page 3-15, January/February 2026.ABSTRACT Thriving entrepreneurial ecosystems (EEs) are instrumental in new enterprise creation and growth, as they provide vital support for entrepreneurial activity. However, as this support may be context‐specific, the existing literature has yet to capture the contextual factors that shape the contributions of EEs.
Mohamed Yacine Haddoud +4 more
wiley +1 more source
Frucht’s Theorem for the Digraph Factorial
Discussiones Mathematicae Graph Theory, 2013 To every graph (or digraph) A, there is an associated automorphism group Aut(A). Frucht’s theorem asserts the converse association; that for any finite group G there is a graph (or digraph) A for which Aut(A) ∼= G.
Hammack Richard H.
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IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.1. A decentralised GCD method of VPP is constructed. In the optimisation model, we include an internal line capacity constraint using a linearised power flow model to improve the safety and stability of this method. 2. An improved exact diffusion algorithm (EDA) considering acceleration and communication noise is proposed.
Mengtong Yuan +5 more
wiley +1 more source
Discussiones Mathematicae Graph Theory, 2018 A digraph is called irregular if its distinct vertices have distinct degree pairs. An irregular digraph is called minimal (maximal) if the removal of any arc (addition of any new arc) results in a non-irregular digraph. It is easily seen that the minimum
Górska Joanna +4 more
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A new sufficient condition for a 2-strong digraph to be Hamiltonian [PDF]
Discrete Mathematics & Theoretical Computer ScienceIn this paper we prove the following new sufficient condition for a digraph to be Hamiltonian: {\it Let $D$ be a 2-strong digraph of order $n\geq 9$. If $n-1$ vertices of $D$ have degrees at least $n+k$ and the remaining vertex has degree at least $n-
Samvel Kh. Darbinyan
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