Results 11 to 20 of about 86,012 (266)

Lower Functional Connectivity in Vestibular-Limbic Networks in Individuals With Subclinical Agoraphobia

open access: yesFrontiers in Neurology, 2019
Background: Agoraphobia was described in 1871 as a condition of fear-related alterations in spatial orientation and locomotor control triggered by places or situations that might cause a patient to panic and feel trapped.
Iole Indovina   +9 more
doaj   +1 more source

Graph Theory [PDF]

open access: yesSymmetry, 2018
This book contains the successful invited submissions [1–10] to a special issue of Symmetry on the subject area of ‘graph theory’ [...]
openaire   +2 more sources

On Some Structural Properties of Integer-Based Graphs and Their Topological Indices

open access: yesJournal of Mathematics, 2022
Integer partition plays an important role in different fields like graph theory and number theory. This paper comprises different properties of the integer partition-based graphs.
Faqir M. Bhatti   +4 more
doaj   +1 more source

Graph Theory

open access: yesCoRR, 2015
This book is based on Graph Theory courses taught by P.A. Petrosyan, V.V. Mkrtchyan and R.R. Kamalian at Yerevan State University.
Petros A. Petrosyan   +2 more
openaire   +2 more sources

The complexity of some families of cycle-related graphs

open access: yesJournal of Taibah University for Science, 2017
In this paper, we derive new formulas for the number of spanning trees of a specific family of graphs – gear graphs, flower graphs, sun graphs and sphere graphs – using techniques from linear algebra, Chebyshev polynomials and matrix theory.
S.N. Daoud, K. Mohamed
doaj   +1 more source

Graph lambda theories

open access: yesMathematical Structures in Computer Science, 2008
A longstanding open problem in lambda calculus is whether there exist continuous models of the untyped lambda calculus whose theory is exactly the λβ or the least sensible λ-theory ℋ (which is generated by equating all the unsolvable terms). A related question is whether, given a class of lambda models, there are a minimal λ-theory and a minimal ...
BUCCIARELLI A, SALIBRA, Antonino
openaire   +4 more sources

Soft covering based rough graphs and corresponding decision making

open access: yesOpen Mathematics, 2019
Soft set theory and rough set theory are two new tools to discuss uncertainty. Graph theory is a nice way to depict certain information. Particularly soft graphs serve the purpose beautifully.
Park Choonkil   +5 more
doaj   +1 more source

On the Boundary of Incidence Energy and Its Extremum Structure of Tricycle Graphs

open access: yesFrontiers in Physics, 2020
With the wide application of graph theory in circuit layout, signal flow chart and power system, more and more attention has been paid to the network topology analysis method of graph theory.
Hongyan Lu, Zhongxun Zhu
doaj   +1 more source

On the Ideal Theory of Graphs

open access: yesJournal of Algebra, 1994
If \(k\) is a field and \(G\) is a graph on a vertex set \(\{v_ 1, \dots, v_ n\}\), then the edge ideal \(I = I(G) \subset R = k[x_ 1, \dots, x_ n]\) is generated by all \(x_ ix_ j\) such that \(v_ iv_ j\) is an edge of \(G\). We shall assume there are no edges of type \(v_ iv_ i\), so \(I\) is square-free and \(R/I\) is a special case of a face ring ...
Simis, Aron   +2 more
openaire   +2 more sources

Fuzzy Computational Analysis of Flower Graph via Fuzzy Topological Indices

open access: yesJournal of Mathematics, 2023
Fuzzy graphs have many applications not only in mathematics but also in any field of science where the concept of fuzziness is involved. The notion of fuzziness is suitable in any environment, which favor to predicts the problem and solve this problem in
Ali Tabraiz   +4 more
doaj   +1 more source

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