Results 51 to 60 of about 22,759 (234)

Noncommutative CW-spectra as enriched presheaves on matrix algebras

open access: yes, 2022
Motivated by the philosophy that C*-algebras reflect noncommutative topology, we investigate the stable homotopy theory of the (opposite) category of C*-algebras. We focus on C*-algebras which are noncommutative CW-complexes in the sense of Eilers et al.
Arone, Gregory,   +2 more
core   +1 more source

A Functional 2D Carbon Allotrope Combining Nanoporous Graphene and Biphenylene Segments

open access: yesAdvanced Materials, EarlyView.
The synthesis of a novel nanoporous graphene (NPG) is reported with biphenylene segments via thermal fusion of 12‐armchair porous graphene nanoribbons grown on gold surfaces. Characterization using STM, AFM, and DFT reveals low‐defect semiconducting behaviour and tunable band gaps.
Paula Angulo‐Portugal   +14 more
wiley   +1 more source

Synchronization in random networks with given expected degree sequences

open access: yes, 2008
Synchronization in random networks with given expected degree sequences is studied. We also investigate in details the synchronization in networks whose topology is described by classical random graphs, power-law random graphs and hybrid graphs when N ...
Kocarev, L., Checco, P., Biey, Mario
core  

Sheets and Topology of Primitive Spectra for Semisimple Lie Algebras

open access: yes, 2001
Let g be a semisimple Lie algebra. Consider the set X of primitive ideals of the enveloping algebra U(g), given the Jacobson topology. A basic open problem is to describe X as a countable union of algebraic varieties V with strata V as large as possible.
Joseph, Anthony, Borho, Walter
core   +1 more source

Simulations of proton transfer processes using reactive force fields [PDF]

open access: yes, 2006
Within this thesis we presented the development of reactive force fields that are ca- pable to describe the dynamics of proton and hydrogen atom transfer processes.
Lammers, Sven
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Topics in Topology and Homotopy Theory

open access: yes, 2022
This book is an account of certain topics in general and algebraic topology. Instead of laying out a synopsis of each chapter, here is a sample of some of what is taken up: 1) Nilpotency and its role in homotopy theory.
Warner, Garth
core  

Torsion models for tensor-triangulated categories: the one-step case

open access: yes, 2022
Given a suitable stable monoidal model category $\mathscr{C}$ and a specialization closed subset $V$ of its Balmer spectrum one can produce a Tate square for decomposing objects into the part supported over $V$ and the part supported over $V^c$ spliced ...
Pol, L.   +8 more
core   +1 more source

Spin‐Split Edge States in Metal‐Supported Graphene Nanoislands Obtained by CVD

open access: yesAdvanced Materials, EarlyView.
Combining STM measurements and ab‐initio calculations, we show that zig‐zag edges in graphene nanoislands grown on Ni(111) by CVD retrieve their spin‐polarized edge states after intercalation of a few monolayers of Au. ABSTRACT Spin‐split states localized on zigzag edges have been predicted for different free‐standing graphene nanostructures.
Michele Gastaldo   +6 more
wiley   +1 more source

Duality In Algebra And Topology

open access: yes, 2002
In this paper we take some classical ideas from commutative algebra, mostly ideas involving duality, and apply them in algebraic topology. To accomplish this we interpret properties of ordinary commutative rings in such a way that they can be extended to
J. P. C. Greenlees   +2 more
core  

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