Territórios & Fronteiras - v. 11, n. 2 (jul./dez. 2018)
نویسندگان
چکیده
منابع مشابه
CombinaTexas 2018 February 10 – 11 , 2018
In this talk we give combinatorial proofs of q-Stirling identities using restricted growth words. This includes a poset theoretic proof of Carlitz’s identity, a new proof of the q-Frobenius identity of Garsia and Remmel and of Ehrenborg’s Hankel q-Stirling determinantal identity. We also develop a two parameter generalization to unify identities of Mercier and include a symmetric function versi...
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Let $R$ be a ring, and let $n, d$ be non-negative integers. A right $R$-module $M$ is called $(n, d)$-projective if $Ext^{d+1}_R(M, A)=0$ for every $n$-copresented right $R$-module $A$. $R$ is called right $n$-cocoherent if every $n$-copresented right $R$-module is $(n+1)$-coprese-nted, it is called a right co-$(n,d)$-ring if every right $R$-module is $(n, d)$-projective. $R$...
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ee annihilation into hadrons is one of the most important suppliers of experimental information on the quark interactions. At high energy it serves as a test of perturbative QCD whereas at low energies it provides insight into nonperturbative effects in QCD as well as valuable input to various phenomenological models describing strongly interacting particles. It became conventional to use the d...
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We consider the Standard Model on a non-commutative space and expand the action in the non-commutativity parameter θ . No new particles are introduced, the structure group is SU(3)×SU(2)×U(1). We derive the leading order action. At zeroth order the action coincides with the ordinary Standard Model. At leading order in θ we find new vertices which are absent in the Standard Model on commutative ...
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ژورنال
عنوان ژورنال: Revista Territórios e Fronteiras
سال: 2018
ISSN: 1984-9036
DOI: 10.22228/rt-f.v11i2.870