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IJNSEC
2008
96views more  IJNSEC 2008»
15 years 4 months ago
Weak Composite Diffie-Hellman
In1985, Shmuley proposed a theorem about intractability of Composite Diffie-Hellman. The theorem of Shmuley may be paraphrased as saying that if there exist a probabilistic polyno...
Kooshiar Azimian, Javad Mohajeri, Mahmoud Salmasiz...
JCT
2010
98views more  JCT 2010»
14 years 11 months ago
Lifts of matroid representations over partial fields
There exist several theorems which state that when a matroid is representable over distinct fields 1,..., k, it is also representable over other fields. We prove a theorem, the Li...
Rudi Pendavingh, Stefan H. M. van Zwam
JCT
2010
79views more  JCT 2010»
14 years 11 months ago
Confinement of matroid representations to subsets of partial fields
Let M be a matroid representable over a (partial) field and B a matrix representable over a sub-partial field . We say that B confines M to if, whenever a -representation matrix ...
Rudi Pendavingh, Stefan H. M. van Zwam
AMC
2007
64views more  AMC 2007»
15 years 4 months ago
On the global attractivity controversy for a delay model of hematopoiesis
Recently, particular counterexamples were constructed to some theorems of a previous paper, concerning the global attractivity of the positive equilibrium for the delay equation _...
Gergely Röst
TYPES
1994
Springer
15 years 8 months ago
A Concrete Final Coalgebra Theorem for ZF Set Theory
A special final coalgebra theorem, in the style of Aczel's [2], is proved within standard Zermelo-Fraenkel set theory. Aczel's AntiFoundation Axiom is replaced by a varia...
Lawrence C. Paulson