Results 21 to 30 of about 3,780 (109)
SKEW LAURENT POLYNOMIAL EXTENSIONS OF BAER AND P.P.-RINGS
Bulletin of the Korean Mathematical Society, 2009 Let R be a ring and fi a monomorphism of R. We study the skew Laurent polynomial rings R(x,x i1 ;fi) over an fi-skew Armendariz ring R. We show that, if R is an fi-skew Armendariz ring, then R is a Baer (resp. p.p.-)ring if and only if R(x,x i1 ;fi) is a Baer (resp. p.p.-) ring. Consequently, if R is an Armendariz ring, then R is a Baer (resp.
Alireza R. Nasr-Isfahani, Ahmad Moussavi
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EFSA scientific report on dietary exposure to lead in the European population
EFSA Journal, Volume 23, Issue 8, August 2025.Abstract Following a request of the European Commission and the need for a joint assessment identified by the European Environmental Agency, the EFSA estimated the chronic dietary exposure to lead in the European population, updating the results of the 2012 assessment.
European Food Safety Authority (EFSA) +3 more
wiley +1 more source
The $q$-difference Noether problem for complex reflection groups and quantum OGZ algebras
, 2016 For any complex reflection group $G=G(m,p,n)$, we prove that the $G$-invariants of the division ring of fractions of the $n$:th tensor power of the quantum plane is a quantum Weyl field and give explicit parameters for this quantum Weyl field. This shows
Hartwig, Jonas T.
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On the dimension of H-strata in quantum matrices
, 2009 We study the topology of the prime spectrum of an algebra supporting a rational torus action. More precisely, we study inclusions between prime ideals that are torus-invariant using the $H$-stratification theory of Goodearl and Letzter on one hand and ...
Bell, J., Launois, S.
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Advanced Science, Volume 12, Issue 16, April 24, 2025.A multi‐parameter‐tunable, all‐metallic, low‐loss, wave‐chaotic cavity enables a frequency‐insensitive (over a 7 GHz bandwidth) technique to synthesize desired transfer functions within smaller windows to high accuracy and with complete reconfigurability of shapes and center frequencies.
Fabian T. Faul +4 more
wiley +1 more source
Simplicity of non-associative skew Laurent polynomial rings
Proceedings of the Edinburgh Mathematical SocietyAbstractWe introduce non-associative skew Laurent polynomial rings and characterize when they are simple. Thereby, we generalize results by Jordan, Voskoglou, and Nystedt and Öinert.
Per Bäck, Johan Richter
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Quantum solvable algebras. Ideals and representations at roots of 1
, 2002 There studed correspondence between symplectic leaves, irreducible representations and prime ideals, which is invariant with respect to quantum adjoint action.
Panov, A. N.
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Physiological Reports, Volume 13, Issue 7, April 2025.Abstract Normotensive African Americans (AAs) show attenuated vascular responses and reduced nitric oxide (NO) bioavailability compared to European Americans (EAs). Few studies have used diverse measures to examine differences in macrovascular function and structure in individuals with a family history of CV disease (CVD). We assessed 150 AAs (Mage, 23.
Julian F. Thayer +6 more
wiley +1 more source
Positivity for cluster algebras of rank 3
, 2013 We prove the positivity conjecture for skew-symmetric coefficient-free cluster algebras of rank 3.Comment: v2:Dedication inserted. To appear in Publ. Res. Inst.
Lee, Kyungyong, Schiffler, Ralf
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Journal of Time Series Analysis, Volume 46, Issue 2, Page 325-352, March 2025.The mixed causal‐non‐causal invertible‐non‐invertible autoregressive moving‐average (MARMA) models have the advantage of incorporating roots inside the unit circle, thus adjusting the dynamics of financial returns that depend on future expectations. This article introduces new techniques for estimating, identifying and simulating MARMA models. Although
Alain Hecq, Daniel Velasquez‐Gaviria
wiley +1 more source