منابع مشابه
Pullbacks of Eisenstein Series on U(3, 3) and Non-vanishing of Shafarevich-tate Groups
In this paper we construct a pullback formula of a Siegel Eisenstein series on GU(3, 3) to GSp(4) × GL(2) and use it to study the Bloch-Kato conjecture for automorphic forms on GL(2). Let f ∈ S2k−2(SL2(Z)) be a normalized eigenform and let p > 2k− 2 be a prime so that p | Lalg(k, f). Then up to some reasonable hypotheses, we use this formula to construct a congruence between the Saito-Kurokawa ...
متن کاملA U(3)C × U(3)L × U(3)R gauge symmetry from intersecting D-branes
A three-family non-supersymmetric model with U(3)3 gauge symmetry is analyzed in the context of intersecting D-branes. This is equivalent to the ‘trinification’ model extended by three U(1) factors which survive as global symmetries in the low energy effective model. The Standard Model fermions are accommodated in the three possible bifundamental multiplets represented by strings with endpoints...
متن کامل3 , 3 - Dimethylacylthioureas : " S " , " - S " , " U " or " W " Conformation ?
We report a study of 3,3-dimethyl substituted acylthioureas. X ray data and quantum mechanical calculations demonstrated that the "S" conformation is the most stable both for the acylthioureas and the corresponding anions. The high regioselectivity towards S-alkylation is explained on the basis of the localization of the HOMO mainly over the sulfur atom. Introduction The acylthioureid group pre...
متن کاملNon-Vanishing and Orthogonal Basis of Symmetry Classes of Tensors
By Cayley’s theorem, any finite group G of order n can be regarded as a subgroup of the symmetric group $n. Let χ be any irreducible complex character of G and let V n χ (G) denote the symmetry classes of tensors associated with G and χ. In this paper assuming the Cayley representation of G, we obtain a formula for the dimension of V n χ (G) and discuss its non-vanishing in general. A necessary...
متن کاملSymmetry of Ext Vanishing over Non-commutative Rings
It is proved for certain graded non-commutative rings that if M and N are graded bi-modules, finitely generated from either side, then the Ext groups between M and N vanish from some step if and only if the Ext groups between N and M vanish from some step. Among the rings in question are twisted homogeneous coordinate rings of elliptic curves.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 2012
ISSN: 1434-6044,1434-6052
DOI: 10.1140/epjc/s10052-012-2081-3