Results 21 to 30 of about 343,735 (322)
Prime rings with PI rings of constants [PDF]
20 pages, LaTex2e, to appear in Israel Journal of Mathematics, volume 96, part B, 1996 (357-377)
V. K. Kharchenko+2 more
openalex +4 more sources
Rings of constants of linear derivations on Fermat rings [PDF]
In this paper we characterize all the linear $\mathbb{C}$-derivations of the Fermat ring. We show that the Fermat ring has linear $\mathbb{C}$-derivations with trivial ring of constants and construct some examples.
Marcelo Oliveira Veloso+1 more
openaire +3 more sources
Black ring with a positive cosmological constant [PDF]
v2. LaTex, 19 pages.
Shou-Huang Dai, Chong-Sun Chu
openaire +2 more sources
Influence of Growth Ring Number and Width on Elastic Constants of Poplar
The objective of this work was to evaluate the effect of growth ring number (specimens including 2, 4, and 6 rings from the bark) and growth ring width on elastic constants in the radial direction of Populus x canadensis, which has not been revealed ...
Murat Aydın, Tuğba Yılmaz Aydın
doaj +2 more sources
Remarks on rings of constants of derivations [PDF]
Let k k be a field of characteristic p > 0 p > 0 and D ≠ 0 D \ne 0 a family of k k -derivations of k [ x , y ] k[x,y] . We prove that k [
openaire +2 more sources
This study presents a photonic bandgap formation in a non-uniform 2D photonic crystal structure with low index rods relative to the air background. In order to find an absolute photonic band gap formation, photonic lattices of two non-uniform square and ...
Seyed Mohammad Zare+3 more
doaj +1 more source
Stereospecific four-bond phosphorus-phosphorus spin couplings in phosphazenyl-phosphazenes [PDF]
Four-bond phosphorus-phosphorus coupling constants have been measured from the 31P NMR spectra of phosphazenylcyclophosphazenes. Their magnitude appears to be related to the conformation adopted by the phosphazenyl-group relative to the phosphazene ...
Biddlestone, Malcolm+4 more
core +2 more sources
Study on polarized piezoceramics constant techniques definition (Part 2)
Introduction. The complete set of all ten electro-elastic moduli of the polarized ceramics essential for the analysis of piezoceramic sensing elements of various devices under the numerical solution to boundary value problems by the finite element method
Victor V. Madorsky
doaj +1 more source
The topological symmetric orbifold
We analyze topological orbifold conformal field theories on the symmetric product of a complex surface M. By exploiting the mathematics literature we show that a canonical quotient of the operator ring has structure constants given by Hurwitz numbers ...
Songyuan Li, Jan Troost
doaj +1 more source
We study AdS 3 × S 1 × Y supersymmetric string theory backgrounds with Neveu-Schwarz-Neveu-Schwarz flux that are dual to N $$ \mathcal{N} $$ = 2 superconformal theories on the boundary. We classify all worldsheet vertex operators that correspond to space-
Sujay K. Ashok, Songyuan Li, Jan Troost
doaj +1 more source