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A group 􀀀 is defined to be cofinitely Hopfian if every homomorphism 􀀀 → 􀀀 whose image is of finite index is an automorphism.Geometrically significant groups enjoying this pr...
This survey of methods surrounding lattice point methods for binomial ideals begins with a leisurely treatment of the geometric combinatorics of binomial primary decomposition. It then proceeds to thr...
The aim of this paper is to study the representation theory of quantum Schu-bert cells. Let g be a simple complex Lie algebra. To each element w of the Weyl group W of g, De Concini, Kac and Procesi h...
We investigate the complexity of the lattice of local clones over a countably infinite base set. In particular, we prove that this lattice contains all algebraic lattices with at most countably many c...
In the paper we o er a functional-discrete method for solving the Cauchy problem for the rst order ordinary di erential equations (ODEs). This method (FD-method) is in some sense similar to the Adomi...
软Vague关系     软集  Vague关系  软Vague关系       2009/7/10
提出软Vague关系的一些基本概念,研究了软Vague关系的∨、∧以及并、交、补代数运算的若干性质。

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