Results 101 to 110 of about 803,275 (234)
Conjugacy in normal subgroups of hyperbolic groups
, 2012 Let N be a finitely generated normal subgroup of a Gromov hyperbolic group G. We establish criteria for N to have solvable conjugacy problem and be conjugacy separable in terms of the corresponding properties of G/N.
Armando Martino +3 more
core +1 more source
Advanced Engineering Materials, Volume 27, Issue 6, March 2025.The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez +5 more
wiley +1 more source
ELEMENTARY SUBGROUPS OF VIRTUALLY FREE GROUPS
, 2019 19 pages.We give a description of elementary subgroups (in the sense of first-order logic) of finitely generated virtually free groups. In particular, we recover the fact that elementary subgroups of finitely generated free groups are free factors ...
André, Simon
core +2 more sources
School Size, Achievement, and Achievement Gaps
Education Policy Analysis Archives, 2004 In order to examine the relationship between school size and achievement, a study was conducted using longitudinal achievement data from North Carolina for three separate cohorts of public school students (one elementary, one middle and one high school).
Bradley J. McMillen
doaj
Recherches en Éducation, 2011 The double component of the librarian’s work in agricultural education invites us to question the elaboration processes of professional identity. From a theoretical point of view, our analysis leans on two processes contributing to producing professional
Jean-François Marcel, Cécile Gardiès
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Subgroups of the elementary and Steinberg groups of congruence level I2
Journal of Pure and Applied Algebra, 1985 Let \(I\) be an ideal in the ring \(B\). It is well known that the relative group \(\mathrm{GL}(B,I)\) depends only on \(I\), but that \(E(B,I)\) varies with the choice of ambient ring \(B\). Let \(E(I) = E(\mathbb{Z}\oplus I,I)\). The authors prove (Theorem 1) that the following subgroups of \(\mathrm{GL}(I)\) are equal, \[ [E(I),E(I)] = [E(B,I),E(B,I)
Geller, Susan C., Weibel, Charles A.
openaire +1 more source
Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials
Advanced Engineering Materials, EarlyView.Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley +1 more source
On residualizing homomorphisms preserving quasiconvexity
, 2005 H is called a G-subgroup of a hyperbolic group G if for any finite subset M G there exists a homomorphism from G onto a non-elementary hyperbolic group G_1 that is surjective on H and injective on M. In his paper in 1993 A. Ol'shanskii gave a description
Minasyan, Ashot
core +1 more source
Advanced Materials, EarlyView.Hydration‐induced symmetry breaking transforms layered LiInP2S6${\rm LiInP}_2{\rm S}_6$ from a nonpolar to a chiral‐polar phase, producing a giant enhancement of non‐resonant second‐harmonic generation. The reversible tuning of polar order through molecular intercalation establishes a strategy for dynamically controlling nonlinear optical ...
Jadupati Nag +8 more
wiley +1 more source
A new motor screening assessment for children at risk for motor disorders: construct validity
Arquivos de Neuro-PsiquiatriaObjective: To develop a motor screening assessment and provide preliminary evidence of its psychometric properties. Methods: A sample of 365 elementary school students was assessed, with structural equation modeling applied to obtain evidence of the ...
Paola Matiko Martins Okuda +4 more
doaj +1 more source