Results 171 to 180 of about 33,151 (213)

A kernelized data-driven approach for analyzing and predicting brucellosis in Inner Mongolia. [PDF]

Innovation (Camb)
Liu YP, Li Y, Sun GQ.
europepmc   +1 more source

Analytical and numerical computations for bioconvective flow Maxwell nanofluid with variable thermal properties using homotopy analysis method and finite difference scheme. [PDF]

Sci Rep
Alzahrani J.
europepmc   +1 more source

Homotopy Theory and homotopy groups

, 2022
openaire   +2 more sources

The homotopy category is a homotopy category.

, 1971
openaire   +1 more source

Graph homotopy and Graham homotopy

Discrete Mathematics, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yeong-Nan Yeh, Chen Beifang, Shing-Tung Yau   +2 more
exaly   +4 more sources

Homotopy-epimorphisms, homotopy-monomorphisms and homotopy-equivalences

Topology and Its Applications, 1992
In a general category, a morphism which is both an epimorphism and a monomorphism need not be an equivalence. However, the authors prove that it is in the case of the homotopy category of pointed path-connected CW-spaces. In fact, they obtain this result as a corollary of a variant of a classical theorem of J. H. C. Whitehead that they prove. They also
Dyer, Eldon, Roitberg, Joseph
exaly   +2 more sources

Some of the next articles are maybe not open access.

Related searches:

The homotopy category is a homotopy category

Archiv Der Mathematik, 1972
Arne Strøm
exaly   +2 more sources

A Note On Homotopy Pushout And Homotopy Coherence

Quaestiones Mathematicae, 2003
We present a self-contained argument, characterizing a homotopy pushout square by recognizing it as an initial object in a certain coherent homotopy category of spaces under a cotriad. Mathematics Subject Classification (2000): 18A30, 55P10, 55Q05.
Hardie, K.A., Kamps, K.H., Witbooi, P.J.
openaire   +2 more sources

Homotopy epimorphisms in homotopy pullbacks

Topology and Its Applications, 1994
The authors prove that homotopy epimorphisms are preserved under homotopy pullback. (A map \(f: X\to Y\) of pointed path-connected CW-spaces is a homotopy epimorphism, if given \(u,v: Y\to Z\), \(u\circ f\simeq v\circ f\) implies \(u\simeq v\).) The proof makes use of \textit{M. Mather}'s first cube theorem [Can. J. Math.
Hong, Lin, Wenhuai, Shen
exaly   +3 more sources