Results 11 to 20 of about 43,687 (165)

Wave-Partition-Governed Dual-Site Spallation in Single Crystals. [PDF]

open access: yesAdv Sci (Weinh)
Crystalline anisotropy shapes shock‐wave propagation and the resulting damage evolution in single crystals. Large‐scale molecular dynamics and damage modeling uncover a dual‐spallation mechanism driven by anisotropic elasticplastic wave separation, which mitigates damage accumulation.
Zhu Y   +6 more
europepmc   +2 more sources

Ore and Goldie theorems for skew PBW extensions [PDF]

open access: yes, 2013
Many rings and algebras arising in quantum mechanics can be interpreted as skew PBW (Poincar\'e-Birkhoff-Witt) extensions. Indeed, Weyl algebras, enveloping algebras of finite-dimensional Lie algebras (and its quantization), Artamonov quantum polynomials,
Acosta, Juan Pablo   +4 more
core   +1 more source

STEREOLOGICAL CORRECTION OF MINERAL LIBERATION GRADE DISTRIBUTIONS ESTIMATED BY SINGLE SECTIONING OF PARTICLES

open access: yesImage Analysis and Stereology, 2011
The liberation distribution of ore samples is of considerable interest for process optimisation in the minerals industry. A scanning electron microscope-based automatic mineral analyser such as the LEO QEMSCAN system developed by CSIRO Minerals is a ...
Steven Spencer, David Sutherland
doaj   +1 more source

A quadratic Poisson Gel'fand-Kirillov problem in prime characteristic [PDF]

open access: yes, 2015
The quadratic Poisson Gel’fand-Kirillov problem asks whether the field of fractions of a Poisson algebra is Poisson birationally equivalent to a Poisson affine space, i.e. to a polyno-mial algebra K[X1,..., Xn] with Poisson bracket defined by {Xi, Xj} =
Launois, Stephane, Lecoutre, Cesar
core   +2 more sources

On common index divisors and monogenity of septic number fields defined by trinomials of type $x^7+ax^5+b$ [PDF]

open access: yesMathematica Bohemica
Let $K $ be a septic number field generated by a root $\theta$ of an irreducible polynomial $ F(x)= x^7+ax^5+b \in\mathbb Z[x]$. In this paper, we explicitly characterize the index $i(K)$ of $K$.
Hamid Ben Yakkou
doaj   +1 more source

Some homological properties of skew PBW extensions [PDF]

open access: yes, 2013
We prove that if R is a left Noetherian and left regular ring then the same is true for any bijective skew PBW extension A of R. From this we get Serre's Theorem for such extensions.
Armando Reyes   +2 more
core   +1 more source

Elementary Matrix-computational Proof of Quillen-Suslin Theorem for Ore Extensions [PDF]

open access: yesFundamenta Informaticae, 2019
In this short note we present an elementary matrix-constructive algorithmic proof of the Quillen-Suslin theorem for Ore extensions A := K[ x; σ, δ], where K is a division ring, σ : K → K is a division ring automorphism and σ : K → K is a σ-derivation of K. It asserts that every finitely generated projective A-module is free.
Fajardo, William, Lezama, Oswaldo
openaire   +2 more sources

Embedding graphs having Ore-degree at most five [PDF]

open access: yes, 2018
Let $H$ and $G$ be graphs on $n$ vertices, where $n$ is sufficiently large. We prove that if $H$ has Ore-degree at most 5 and $G$ has minimum degree at least $2n/3$ then $H\subset G.$Comment: accepted for publication at SIAM J.
Csaba, Béla, Nagy-György, Judit
core   +2 more sources

A generalization of Ore's Theorem involving neighborhood unions

open access: yesDiscrete Mathematics, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Broersma, Haitze J.   +2 more
openaire   +1 more source

Law Without Law or “Just” Limit Theorems? [PDF]

open access: yesFoundations of Physics, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
CAPRARA, SERGIO, VULPIANI, Angelo
openaire   +2 more sources

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