Results 21 to 30 of about 264,685 (296)

Stationary solutions for the Cahn-Hilliard equation [PDF]

open access: yes, 1998
We study the Cahn-Hilliard equation in a bounded domain without any symmetry assumptions. We assume that the mean curvature of the boundary has a nongenerate critical point.
Wei, J, Winter, M
core   +2 more sources

The class of Eisenbud–Khimshiashvili–Levine is the local A1-Brouwer degree [PDF]

open access: yesDuke mathematical journal, 2016
Given a polynomial function with an isolated zero at the origin, we prove that the local A1-Brouwer degree equals the Eisenbud-Khimshiashvili-Levine class. This answers a question posed by David Eisenbud in 1978.
J. Kass, K. Wickelgren
semanticscholar   +1 more source

The Brouwer invariance theorems in reverse mathematics

open access: yesForum of Mathematics, Sigma, 2020
In [12], John Stillwell wrote, ‘finding the exact strength of the Brouwer invariance theorems seems to me one of the most interesting open problems in reverse mathematics.’ In this article, we solve Stillwell’s problem by showing that (some forms of) the
Takayuki Kihara
doaj   +1 more source

Weihrauch goes Brouwerian

open access: yes, 2020
We prove that the Weihrauch lattice can be transformed into a Brouwer algebra by the consecutive application of two closure operators in the appropriate order: first completion and then parallelization. The closure operator of completion is a new closure
Brattka, Vasco, Gherardi, Guido
core   +1 more source

Lewis meets Brouwer: constructive strict implication [PDF]

open access: yesarXiv.org, 2017
C. I. Lewis invented modern modal logic as a theory of "strict implication". Over the classical propositional calculus one can as well work with the unary box connective.
Tadeusz Litak, A. Visser
semanticscholar   +1 more source

Reseñas

open access: yesRevista de Fomento Social, 2006
Reseñas de las obras: PANIAGUA ZURERA, Manuel (2005), La sociedad cooperativa. Las sociedades mutuas de seguros y las mutualidades de previsión social, Madrid, Marcial Pons, 427 pp. SALINAS RAMOS Fernando, HERRANZ DE LA CASA, José María y ALBARRÁN
Marta Montero Simó   +4 more
doaj   +1 more source

Review of Using Video to Develop Teaching

open access: yesTechnology in Language Teaching & Learning, 2023
Review of Using Video to Develop Teaching, by Niels Brouwer, Routledge, 2022. 416pp., $273.00 (Hardcover) $77.99 (Paperback) $63.89 (eBook). ISBN 9780367353803.
Rizgar Mahmood
doaj   +1 more source

A Brouwer fixed point theorem for graph endomorphisms [PDF]

open access: yes, 2012
We prove a Lefschetz formula for general simple graphs which equates the Lefschetz number L(T) of an endomorphism T with the sum of the degrees i(x) of simplices in G which are fixed by T.
Knill, Oliver
core   +3 more sources

Individual Choice Sequences in the Work of L.E.J. Brouwer

open access: yesPhilosophia Scientiæ, 2005
Choice sequences are sequences not completely determined by an algorithmic law. We maintain that the introduction of particular choice se­quences by Brouwer in the late twenties was not recognised as such.
Joop Niekus
doaj   +1 more source

On Strongly Irregular Points of a Brouwer Homeomorphism Embeddable in a Flow

open access: yesAbstract and Applied Analysis, 2014
We study the set of all strongly irregular points of a Brouwer homeomorphism f which is embeddable in a flow. We prove that this set is equal to the first prolongational limit set of any flow containing f.
Zbigniew Leśniak
doaj   +1 more source

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