Results 111 to 120 of about 33,151 (213)

Travelling wave solutions: A new approach to the analysis of nonlinear physical phenomena

open access: yesOpen Physics, 2014
Sayevand Khosro   +2 more
doaj   +1 more source

INDEX COMPUTATION OF SOME BISINGULAR OPERATORS WITH SHIFT BY HOMOTOPY METHOD

open access: yesAdvanced Engineering Research, 2010
The work continues to research the insufficiently explored problem of bisingular operators with shift index. It considers new cases of index computation of the bisingular operators with indisintegrative involutive shift by the homotopy method.
S. V. EFIMOV
doaj  

On the homotopy groups of spheres in homotopy type theory

open access: yesCoRR, 2016
The goal of this thesis is to prove that $π_4(S^3) \simeq \mathbb{Z}/2\mathbb{Z}$ in homotopy type theory. In particular it is a constructive and purely homotopy-theoretic proof. We first recall the basic concepts of homotopy type theory, and we prove some well-known results about the homotopy groups of spheres: the computation of the homotopy groups ...
openaire   +3 more sources

Continuos g-contraíbles

open access: yesRevista Integración, 2012
Diremos que un continuo X es g-contraíble si existe una función continua y sobreyectiva f : X → X que es homotópica a una función constante. En este artículo hacemos una recopilación de los resultados conocidos acerca de los continuos g-contraíbles ...
Michael A. Rincón-Villamizar
doaj  

Homotopy of representations up to homotopy

open access: yes
30 pages. Comments are welcome!
Brahic, Olivier, Frejlich, Pedro
openaire   +2 more sources

On \(c\)-homotopies

open access: yes, 1995
The author introduces an interesting notion of \(c\)-homotopy. The definition is the same as the usual one, only continuity is replaced by connectedness. Generalizing the Darboux property, the author calls a mapping to be connected if it sends connected sets onto connected sets. In the paper, the author shows that the \(c\)-homotopy has some reasonable
openaire   +2 more sources

On Homotopy Groups

open access: yesProceedings of the National Academy of Sciences, 1940
openaire   +4 more sources

Home - About - Disclaimer - Privacy