Results 1 to 10 of about 1,751 (115)

Choice of Ultrafilter Affects Recovery Rate of Bacteriophages [PDF]

open access: yesViruses, 2023
Studies into the viral fraction of complex microbial communities, like in the mammalian gut, have recently garnered much interest. Yet there is still no standardized protocol for extracting viruses from such samples, and the protocols that exist employ ...
Frej Larsen   +5 more
doaj   +2 more sources

The application of modular multifunctional left heart bypass circuit system integrated with ultrafiltration in thoracoabdominal aortic aneurysm repair [PDF]

open access: yesFrontiers in Cardiovascular Medicine, 2022
Open thoracoabdominal aortic aneurysm (TAAA) repair is a complex and challenging operation with a high incidence of serious complications, and high perioperative mortality and morbidity.
Lingjin Huang   +17 more
doaj   +2 more sources

Purification immunoglobulin yolk anti avian influenza H5N1 in poultry using hydrophobic interaction chromatography [PDF]

open access: yesPoultry Science
Avian influenza is a significant threat to the poultry industry, and it has become an outbreak in many countries because of its mortality and morbidity.
Armanda Dwi Prayugo   +8 more
doaj   +2 more sources

Orbitally discrete coarse spaces

open access: yesApplied General Topology, 2021
Given a coarse space (X, E), we endow X with the discrete topology and denote X ♯ = {p ∈ βG : each member P ∈ p is unbounded }. For p, q ∈ X ♯ , p||q means that there exists an entourage E ∈ E such that E[P] ∈ q for each P ∈ p.
Igor V. Protasov
doaj   +1 more source

Ultraproducts and Related Constructions

open access: yesMathematics, 2022
In this work, we survey some research directions in which the ultraproduct construction and methods based on ultrafilters play significant roles. Rather different areas of mathematics have been considered: topics we are reviewing here include some ...
Gábor Sági
doaj   +1 more source

Asymptotic fixed points for nonlinear contractions

open access: yesFixed Point Theory and Applications, 2005
Recently, W. A. Kirk proved an asymptotic fixed point theorem for nonlinear contractions by using ultrafilter methods. In this paper, we prove his theorem under weaker assumptions. Furthermore, our proof does not use ultrafilter methods.
Yong-Zhuo Chen
doaj   +2 more sources

The Expectation Monad in Quantum Foundations [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2012
The expectation monad is introduced abstractly via two composable adjunctions, but concretely captures measures. It turns out to sit in between known monads: on the one hand the distribution and ultrafilter monad, and on the other hand the continuation ...
Bart Jacobs, Jorik Mandemaker
doaj   +1 more source

A Note on the Topologicity of Quantale-Valued Topological Spaces [PDF]

open access: yesLogical Methods in Computer Science, 2017
For a quantale ${\sf{V}}$, the category $\sf V$-${\bf Top}$ of ${\sf{V}}$-valued topological spaces may be introduced as a full subcategory of those ${\sf{V}}$-valued closure spaces whose closure operation preserves finite joins.
Hongliang Lai, Walter Tholen
doaj   +1 more source

Closed ideals in the functionally countable subalgebra of C(X)

open access: yesApplied General Topology, 2022
In this paper, closed ideals in Cc(X), the functionally countable subalgebra of C(X), with the mc-topology, is studied. We show that if X is CUC-space, then C*c(X) with the uniform norm-topology is a Banach algebra.
Amir Veisi
doaj   +1 more source

Alexandroff duplicate and βκ

open access: yesApplied General Topology, 2022
We discuss spaces and the Alexandroff duplicates of those spaces that admit a Č-S embedding into the Čech-Stone compactification of a discrete space.
Andrzej A Szymanski
doaj   +1 more source

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