Results 11 to 20 of about 1,795 (267)

An Extremal Graph Problem with a Transcendental Solution [PDF]

open access: yesCombinatorics, Probability and Computing, 2018
We prove that the number of multigraphs with vertex set {1, . . .,n} such that every four vertices span at most nine edges isan2+o(n2)whereais transcendental (assuming Schanuel's conjecture from number theory). This is an easy consequence of the solution to a related problem about maximizing the product of the edge multiplicities in certain multigraphs,
Dhruv Mubayi, Caroline Terry 0001
openaire   +3 more sources

On the density of extremal solutions of differential inclusions [PDF]

open access: yesAnnales Polonici Mathematici, 1992
Let \(F:I\times X\to 2^ x\backslash\varphi\) be a multifunction, where \(I=[t_ 0,T]\), and \(X\) is a reflexive separable Banach space. Assume that \(\{F(t,x)\}\) is closed, convex, with nonempty interior, \(F\) is continuous and bounded on \(I\times B(x_ 0r)\).
PIANIGIANI, GIULIO, F. DE BLASI
openaire   +3 more sources

Algorithmic Solution of Extremal Digraph Problems [PDF]

open access: yesTransactions of the American Mathematical Society, 1985
For a given family L \mathcal {L} of digraphs, we study the ...
Brown, William G.   +2 more
openaire   +1 more source

Extremal rotating solutions in Hořava gravity [PDF]

open access: yesPhysical Review D, 2010
14 pages, Latex file.
Ghodsi, Ahmad, Hatefi, Ehsan
openaire   +2 more sources

Einstein-Maxwell-scalar black holes: classes of solutions, dyons and extremality

open access: yesJournal of High Energy Physics, 2019
Spherical black hole (BH) solutions in Einstein-Maxwell-scalar (EMS) models wherein the scalar field is non-minimally coupled to the Maxwell invariant by some coupling function are discussed. We suggest a classification for these models into two classes,
D. Astefanesei   +3 more
doaj   +1 more source

Iterative technique for coupled integral boundary value problem of non-integer order differential equations

open access: yesAdvances in Difference Equations, 2017
This article is concerned to the investigation of extremal solutions for a system of fractional order differential equations with coupled integral boundary value problem.
Yongjin Li, Kamal Shah, Rahmat Ali Khan
doaj   +1 more source

Upper and lower solution method for Hilfer fractional evolution equations with nonlocal conditions

open access: yesBoundary Value Problems, 2019
This paper is concerned with the existence of extremal mild solutions for Hilfer fractional evolution equations with nonlocal conditions in an ordered Banach space E.
Haide Gou, Yongxiang Li
doaj   +1 more source

Squashed, magnetized black holes in D = 5 minimal gauged supergravity

open access: yesJournal of High Energy Physics, 2018
We construct a new class of black hole solutions in five-dimensional Einstein-Maxwell-Chern-Simons theory with a negative cosmological constant. These configurations are cohomogeneity-1, with two equal-magnitude angular momenta. In the generic case, they
Jose Luis Blázquez-Salcedo   +3 more
doaj   +1 more source

A functional integral inclusion involving Carathéodories

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2003
In this paper the existence of extremal solutions of a functional integral inclusion involving Carathéodory is proved under certain monotonicity conditions.
Bapurao Dhage
doaj   +1 more source

Monotone Iterative Technique for Conformable Fractional Differential Equations with Deviating Arguments

open access: yesDiscrete Dynamics in Nature and Society, 2020
This paper is concerned with the existence of extremal solutions for periodic boundary value problems for conformable fractional differential equations with deviating arguments.
Huiling Chen, Shuman Meng, Yujun Cui
doaj   +1 more source

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