Results 1 to 10 of about 1,039,132 (290)

An Extremum Principle for Smooth Problems [PDF]

open access: yesGames, 2020
We derive an extremum principle. It can be treated as an intermediate result between the celebrated smooth-convex extremum principle due to Ioffe and Tikhomirov and the Dubovitskii–Milyutin theorem.
Dariusz Idczak, Stanisław Walczak
doaj   +11 more sources

An extremum principle of evaporation [PDF]

open access: yesWater Resources Research, 2004
It is proposed, on the basis of an argument of thermodynamic equilibrium, that land‐atmosphere interactive processes lead to thermal and hydrologic states of the land surface that maximize evaporation in a given meteorological environment. The extremum principle leads to general equations linking surface energy fluxes to surface temperature and soil ...
Rafael Luis Bras, Guido Salvucci
exaly   +2 more sources

A problem with shift for a mixed-type model equation of the second kind in an unbounded domain [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2022
This article studies a problem with shift in the characteristics of different families in an unbounded domain for a mixed-type model equation of the second kind.
R.T. Zunnunov, A.A. Ergashev
doaj   +2 more sources

On a Parallelised Diffusion Induced Stochastic Algorithm with Pure Random Search Steps for Global Optimisation

open access: yesMathematics, 2021
We propose a stochastic algorithm for global optimisation of a regular function, possibly unbounded, defined on a bounded set with regular boundary; a function that attains its extremum in the boundary of its domain of definition.
Manuel L. Esquível   +3 more
doaj   +1 more source

Об одной краевой задаче для смешанного уравнения c тремя плоскостями изменения типа в бесконечной призматической области

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2021
В данной работе в бесконечной призматической области формулируется и изучается одна задача для параболо-гиперболического уравнения c тремя плоскостями изменения типа.
Исломов, Б.И.   +1 more
doaj   +1 more source

ON THE UNIQNESS OF TRICOMI PROBLEM ANALOGUE FOR MIXED TYPE EQUATION WITH TWO DEGENERATED PARALLEL LINES [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2015
In this paper the solution uniqness toTricomi problem analogue for the mixed type equation in a do-main containing two parallel lines with parabolic degeneration.
Z.V. Kudaeva
doaj   +1 more source

An Extremum Principle for Shape from Contour [PDF]

open access: yesIEEE Transactions on Pattern Analysis and Machine Intelligence, 1984
An extremum principle is developed that determines three-dimensional surface orientation from a two-dimensional contour. The principle maximizes the ratio of the area to the square of the perimeter, a measure of the compactness or symmetry of the three-dimensional surface.
Michael Brady 0001, Alan L. Yuille
openaire   +3 more sources

Maximum Principle for the Space-Time Fractional Conformable Differential System Involving the Fractional Laplace Operator

open access: yesJournal of Mathematics, 2020
In this paper, the authors consider a IBVP for the time-space fractional PDE with the fractional conformable derivative and the fractional Laplace operator. A fractional conformable extremum principle is presented and proved.
Tingting Guan, Guotao Wang
doaj   +1 more source

The Concavity of Entropy and Extremum Principles in Thermodynamics [PDF]

open access: yesJournal of Statistical Physics, 2003
19 pages, 1 ...
PRESTIPINO GIARRITTA, Santi   +1 more
openaire   +3 more sources

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