Results 21 to 30 of about 1,039,132 (290)
On the extremum principle of natural with inbreeding
, 1997 The extremum principle in the genetical theory of natural selection has been discussed when the population undergoes inbreeding at a constant value of the inbreeding coefficient with constant fitness of the three genotypes possible with two alleles at a ...
Narain, P.
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J.-L. LAGRANGE AS ONE OF THE FOUNDERS OF THE SEVERAL VARIABLES FUNCTIONS EXTREMA THEORY
Радіоелектронні і комп'ютерні системи, 2020 In the article we carried out a detailed analysis of the results obtained by J.-L. Lagrange in his first. The theory of extrema of functions of many variables, as part of mathematical analysis, refers to the mathematical foundations of the study of ...
Ольга Михайловна Прохорова
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The dS swampland conjecture with the electroweak symmetry and QCD chiral symmetry breaking
Journal of High Energy Physics, 2018 The dS swampland conjecture |∇V|/V ≥ c, where c is presumed to be a positive constant of order unity, implies that the dark energy density of our Universe can not be a cosmological constant, but mostly the potential energy of an evolving quintessence ...
Kiwoon Choi +2 more
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Study on Principle Extremum of Full Action
, 2021 The Lagrange formalism on dissipative systems is extended by a new variational principle extremum of full action. This principle can be applied to electrical engineering and mechanics when friction forces are taken into account.It also mentions its ...
Solomon Khmelnik
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On nonlocal problem with fractional Riemann-Liouville derivatives for a mixed-type equation
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2017 The unique solvability is investigated for the problem of equation with partial fractional derivative of Riemann-Liouville and boundary condition that contains the generalized operator of fractional integro-differentiation. The uniqueness theorem for the
Anna V Tarasenko, Irina P Egorova
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A non-local problem for a loaded mixed-type equation with a integral operator
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2016 We study the existence and uniqueness of the solution of non-local boundary value problem for the loaded elliptic-hyperbolic equation $$ u_{xx} + \mathop{\mathrm{sgn}} (y) u_{yy} + \frac{1 - \mathop{\mathrm{sgn}} (y)}{2} \sum\limits_{k = 1}^n {R_k}(x, u ...
Obidjon Kh Abdullayev
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Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2016 В работе доказан принцип экстремума и единственность решения задачи Дирихле для уравнения Лаврентьева-Бицадзе в области, содержащей две параллельные линии изменения ...
Кудаева, З.В.
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Extremum principles in electromagnetic systems [PDF]
Rendiconti del Circolo Matematico di Palermo, 1999 The authors state various saddle-point principles for linear problems in electromagnetism, such as resonant frequencies in a cavity, with either conservative or dissipative boundary conditions. They discuss the quasi-static problem and the time-harmonic case.
GIORGI, Claudio, VUK, Elena
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Exact scalar (quasi-)normal modes of black holes and solitons in gauged SUGRA
Journal of High Energy Physics, 2022 In this paper we identify a new family of black holes and solitons that lead to the exact integration of scalar probes, even in the presence of a non-minimal coupling with the Ricci scalar which has a non-trivial profile.
Monserrat Aguayo +4 more
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Extremum principle of crystal plasticity
, 1988 An analytical method for determining slip shear rate under prescribed stress rate or prescribed strain rate has been presented on the basis of the incremental theory of crystal plasticity.
Wang ZQ(王自强)
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