Results 101 to 110 of about 3,122,764 (234)

On Ordered Geometries [PDF]

open access: yesCanadian Mathematical Bulletin, 1963
In Theorem 2.20 of his Geometric Algebra, Artin shows that any ordering of a plane geometry is equivalent to a weak ordering of its skew field. Referring to his Theorem 1. 16 that every weakly ordered field with more than two elements is ordered, he deduces his Theorem 2.21 that ...
openaire   +2 more sources

Impurities in Schrödinger field theories and s-wave resonance

open access: yesJournal of High Energy Physics
We study point impurities in non-relativistic quantum field theories, with a focus on scale-invariant fixed points. We establish the framework of conformal defects in Schrödinger field theories and their correspondence to many-body states in a harmonic ...
Avia Raviv-Moshe, Siwei Zhong
doaj   +1 more source

Changes in active-site geometry on X-ray photoreduction of a lytic polysaccharide monooxygenase active-site copper and saccharide binding [PDF]

open access: gold, 2022
Tobias Tandrup   +9 more
openalex   +1 more source

Metagrating meets the geometry-based efficiency limit for AR waveguide in-couplers

open access: gold, 2023
Jeremy Goodsell   +4 more
openalex   +1 more source

Effect of Thermal Management Approaches on Geometry and Productivity of Thin-Walled Structures of ER 5356 Built by Wire + Arc Additive Manufacturing [PDF]

open access: gold, 2021
Leandro João da Silva   +4 more
openalex   +1 more source

Symmetrization in geometry

open access: yesAdvances in Mathematics, 2017
The concept of an $i$-symmetrization is introduced, which provides a convenient framework for most of the familiar symmetrization processes on convex sets. Various properties of $i$-symmetrizations are introduced and the relations between them investigated.
BIANCHI, GABRIELE   +2 more
openaire   +3 more sources

Anamorphic images on the historical background along with their classification and some selected examples

open access: yesTechnical Transactions, 2017
Art based on optical illusions has accompanied the everyday life of a human being since ancient times, until today. Primarily, it played a specific role as an artistic game and manifested the artists’ own mastery, while often playing the serviceable role
Zdziarski Andrzej, Jonak Marcin
doaj   +1 more source

Geometry and categorification

open access: yes, 2016
We describe a number of geometric contexts where categorification appears naturally: coherent sheaves, constructible sheaves and sheaves of modules over quantizations.
Webster, Ben
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