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JSC
2010
13 years 7 months ago
2010
In this paper we deal with the verification of safety properties of infinite-state systems modeled by term-rewriting systems. An over-approximation of the set of reachable terms...
JSC
2010
13 years 7 months ago
2010
1 We present a solution to the conjugacy decision problem and the conjugacy search problem2 in Garside groups, which is theoretically simpler than the usual one, with no loss of e...
JSC
2010
13 years 7 months ago
2010
We prove two versions of Stickelberger’s Theorem for positive dimensions and use them to compute the connected and irreducible components of a complex algebraic variety. If the ...
JSC
2010
13 years 7 months ago
2010
Let Xm,n be the Segre-Veronese variety Pm ×Pn embedded by the morphism given by O(1, 2) and let σs(Xm,n) denote the sth secant variety to Xm,n. In this paper, we prove that if m ...
JSC
2010
13 years 7 months ago
2010
We present a new algorithm to compute the integral closure of a reduced Noetherian ring in its total ring of fractions. A modification, applicable in positive characteristic, whe...