Results 1 to 10 of about 964 (264)

Embryonic perfect repair inspired electrospun nanofibers dressing with temperature-sensitive and antibacterial properties for wound healing [PDF]

Frontiers in Microbiology, 2023
IntroductionThe development of highly effective wound dressings is crucial for successful clinical applications. Achieving wound closure, preventing infection, and minimizing scarring are key objectives in wound healing.
Qinbing Qi, Rongkai Li, Chunhua Wang, Guige Hou, Chengbo Li   +4 more
doaj   +2 more sources

Large Contractible Subgraphs of a 3-Connected Graph

Discussiones Mathematicae Graph Theory, 2021
Let m ≥ 5 be a positive integer and let G be a 3-connected graph on at least 2m + 1 vertices. We prove that G has a contractible set W such that m ≤ W ≤ 2m − 4.
Karpov Dmitri V.
doaj   +1 more source

When is the space of semi-additive functionals an absolute (neighbourhood) retract?

Pracì Mìžnarodnogo Geometričnogo Centru, 2022
In the present paper proved that if for a given compact Hausdorff space X the hyperspace exp(X) is a contractible compact space then the space OSf(X) is also a contractible compact space.
Adilbek Atakhanovich Zaitov, Khamidjon Kurbanov   +1 more
doaj   +1 more source

On Fuzzy F∗-Simply Connected Spaces in Fuzzy F∗-Homotopy

Journal of Function Spaces, 2022
In this paper, the notions of fuzzy F∗-simply connected spaces and fuzzy F∗-structure homeomorphisms are introduced, and further fuzzy F∗-structure homeomorphism between fuzzy F∗-path-connected spaces are studied.
V. Madhuri, Omar Bazighifan, Ali Hasan Ali, A. El-Mesady   +3 more
doaj   +1 more source

A Model of Directed Graph Cofiber

Axioms, 2022
In the homotopy theory of spaces, the image of a continuous map is contractible to a point in its cofiber. This property does not apply when we discretize spaces and continuous maps to directed graphs and their morphisms.
Zachary McGuirk, Byungdo Park
doaj   +1 more source

Smart Contracts Contracts [PDF]

Frontiers in Blockchain, 2020
This paper explores the connection between software contracts and smart contracts. Despite the assonance, these two terms denote quite different concepts: software contracts are logical properties of software components, while smart contracts are programs executed on blockchains. What is the relation between them?
openaire   +3 more sources

Lift-contractions [PDF]

European Journal of Combinatorics, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Golovach, Petr A., Paulusma, Daniël, Kamiski, Marcin, Thilikos, Dimitrios M.   +3 more
openaire   +8 more sources

Structure of edges in a 4-connected graph not contained in triangles and the number of contractible edges

AKCE International Journal of Graphs and Combinatorics, 2018
Let G be a 4-connected graph, and let E ̃ (G) denote the set of those edges of G which are not contained in a triangle, and let E c (G) denote the set of 4-contractible edges of G . We show that if 3 ≤ | E ̃ (G) | ≤ 4 or | E ̃ (G) | ≥ 7 , then | E c (G) |
Yoshimi Egawa, Keiko Kotani, Shunsuke Nakamura   +2 more
doaj   +2 more sources

An approach to Quillen’s conjecture via centralisers of simple groups

Forum of Mathematics, Sigma, 2021
For any given subgroup H of a finite group G, the Quillen poset ${\mathcal {A}}_p(G)$ of nontrivial elementary abelian p-subgroups is obtained from ${\mathcal {A}}_p(H)$ by attaching elements via their centralisers in H.
Kevin Iván Piterman
doaj   +1 more source

Fixed point sets of maps homotopic to a given map

Fixed Point Theory and Applications, 2006
Let f:X→X be a self-map of a compact, connected polyhedron and Φ⊆X a closed subset. We examine necessary and sufficient conditions for realizing Φ as the fixed point set of a map homotopic to f. For the case where Φ is a subpolyhedron,
Christina L. Soderlund
doaj   +4 more sources