Results 11 to 20 of about 556,147 (204)

Detecting intermediate protein conformations using algebraic topology [PDF]

open access: yesBMC Bioinformatics, 2017
Background Understanding protein structure and dynamics is essential for understanding their function. This is a challenging task due to the high complexity of the conformational landscapes of proteins and their rugged energy levels. In particular, it is
Nurit Haspel   +2 more
doaj   +2 more sources

Algebraic topology-based machine learning using MRI predicts outcomes in primary sclerosing cholangitis [PDF]

open access: yesEuropean Radiology Experimental, 2022
Background Primary sclerosing cholangitis (PSC) is a chronic cholestatic liver disease that can lead to cirrhosis and hepatic decompensation. However, predicting future outcomes in patients with PSC is challenging.
Yashbir Singh   +20 more
doaj   +2 more sources

Application of Algebraic Topology to Homologous Recombination of DNA [PDF]

open access: yesiScience, 2018
Summary: Brouwer's fixed point theorem, a fundamental theorem in algebraic topology proved more than a hundred years ago, states that given any continuous map from a closed, simply connected set into itself, there is a point that is mapped unto itself ...
Ido Braslavsky, Joel Stavans
doaj   +2 more sources

Dual attachment pairs in categorically-algebraic topology [PDF]

open access: yesApplied General Topology, 2011
The paper is a continuation of our study on developing a new approach to (lattice-valued) topological structures, which relies on category theory and universal algebra, and which is called categorically-algebraic (catalg) topology.
Anna Frascella   +2 more
doaj   +2 more sources

Algebraic Topology

open access: yes, 2018
This course is a first course in algebraic topology. The emphasis is on homology and cohomology theory, including cup products, Kunneth formulas, intersection pairings, and the Lefschetz fixed point ...
Marvin J. Greenberg, John R. Harper
openaire   +2 more sources

Le probl\`eme de la sch\'ematisation de Grothendieck revisit\'e [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2020
The objective of this work is to reconsider the schematization problem of [6], with a particular focus on the global case over Z. For this, we prove the conjecture [Conj. 2.3.6][15] which gives a formula for the homotopy groups of the schematization of a
Bertrand Toën
doaj   +1 more source

On the gamma spectrum of multiplication gamma acts

open access: yesKuwait Journal of Science, 2021
In this paper we introduce the concept of topological gamma act as a generalization of Zariski   topology .  Some topological   properties of  this topology   are studied.
Mehdi S. Abbas, Samer A. Jubair
doaj   +1 more source

Neutrosophic Vague Binary BCK/BCI-algebra [PDF]

open access: yesNeutrosophic Sets and Systems, 2020
Ineradicable hindrances of the existing mathematical models widespread from probabilities to soft sets. These difficulties made up way for the opening of “neutrosophic set model’.
Remya. P. B , Francina Shalini. A
doaj   +1 more source

An algorithm for calculating top-dimensional bounding chains [PDF]

open access: yesPeerJ Computer Science, 2018
We describe the Coefficient-Flow algorithm for calculating the bounding chain of an $(n-1)$-boundary on an $n$-manifold-like simplicial complex $S$. We prove its correctness and show that it has a computational time complexity of O(|S(n−1)|) (where S(n−1)
J. Frederico Carvalho   +3 more
doaj   +2 more sources

Cellular structures in Topology [PDF]

open access: yes, 1990
This book describes the construction and the properties of CW-complexes. These spaces are important because firstly they are the correct framework for homotopy theory, and secondly most spaces that arise in pure mathematics are of this type.
Renzo Piccinini   +4 more
core   +1 more source

Home - About - Disclaimer - Privacy