Results 1 to 10 of about 1,035,102 (229)

A Cheeger-Buser-type inequality on CW complexes [PDF]

open access: yesInternational Journal of Group Theory, 2023
We extend the definition of boundary expansion to CW complexes and prove a Cheeger-Buser-type relation between the spectral gap of the Laplacian and the boundary expansion of an orientable CW complex.
Grégoire Schneeberger
doaj   +3 more sources

Discrete dynamics on noncommutative CW complexes [PDF]

open access: yesApplied General Topology, 2013
The concept of discrete multivalued dynamical systems for noncommutative CW complexes is developed. Stable and unstable manifolds are introduced and their role in geometric and topological configurations of noncommutative CW complexes is studied.
Vida Milani, Seyed M.H. Mansourbeigi
doaj   +2 more sources

A Simulation Independent Analysis of Single- and Multi-Component cw ESR Spectra

open access: yesMagnetochemistry, 2023
The accurate analysis of continuous-wave electron spin resonance (cw ESR) spectra of biological or organic free-radicals and paramagnetic metal complexes is key to understanding their structure–function relationships and electrochemical properties.
Aritro Sinha Roy   +5 more
doaj   +1 more source

BFT2: a general class of 2d N $$ \mathcal{N} $$ = (0, 2) theories, 3-manifolds and toric geometry

open access: yesJournal of High Energy Physics, 2022
We introduce and initiate the study of a general class of 2d N $$ \mathcal{N} $$ = (0, 2) quiver gauge theories, defined in terms of certain 2-dimensional CW complexes on oriented 3-manifolds. We refer to this class of theories as BFT2’s.
Sebastián Franco, Xingyang Yu
doaj   +1 more source

Elucidation of the Structure of Lignin–Carbohydrate Complexes in Ginkgo CW-DHP by 13C-2H Dual Isotope Tracer

open access: yesMolecules, 2021
To elucidate the chemical linkages between lignin and carbohydrates in ginkgo cell walls, 13C-2H-enriched cell wall-dehydrogenation polymers (CW-DHP) were selectively prepared with cambial tissue from Ginkgo biloba L.
Kai Zhang   +3 more
doaj   +1 more source

Associated graphs and chain maps [PDF]

open access: yesDelta Journal of Science, 2016
In this paper, we defined the associated graph constructed to acellular folding defined on regular CW-complexes. Thesegraphs declare the effect of a cellular folding on the complex.Besides we studied the properties of this graph and we provedthat it is ...
N. El-Sharkawey, E. EL-Kholy
doaj   +1 more source

The Impact of Cutting with a Shearer on the Conditions of Longwall Ventilation

open access: yesEnergies, 2021
In coal mines that are exploiting methane-saturated seams, high-level emission of methane is often the basic limitation for modern and high-efficiency longwall complexes.
Wacław Dziurzyński   +3 more
doaj   +1 more source

The Bacterial Flagellar Motor: Insights Into Torque Generation, Rotational Switching, and Mechanosensing

open access: yesFrontiers in Microbiology, 2022
The flagellar motor is a bidirectional rotary nanomachine used by many bacteria to sense and move through environments of varying complexity. The bidirectional rotation of the motor is governed by interactions between the inner membrane-associated stator
Shuaiqi Guo   +3 more
doaj   +1 more source

Russian Gyrotrons: Achievements and Trends

open access: yesIEEE Journal of Microwaves, 2021
The last decade has contributed to the rapid progress in the gyrotron development. Megawatt-class, continuous wave gyrotrons are employed as high-power millimeter (mm)-wave sources for electron cyclotron heating (ECH) and current drive in the tokamaks ...
Alexander G. Litvak   +2 more
doaj   +1 more source

Morse theory for C*-algebras: a geometric interpretation of some noncommutative manifolds

open access: yesApplied General Topology, 2011
The approach we present is a modification of the Morse theory for unital C*-algebras. We provide tools for the geometric interpretation of noncommutative CW complexes. Some examples are given to illustrate these geometric information.
Vida Milani   +2 more
doaj   +1 more source

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