共查询到20条相似文献,搜索用时 812 毫秒
1.
T. Kolokolonikov 《Journal of Differential Equations》2008,245(4):964-993
We consider the stationary Gierer-Meinhardt system in a ball of RN:
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Hao Pan 《Journal of Number Theory》2008,128(6):1646-1654
Let e?1 and b?2 be integers. For a positive integer with 0?aj<b, define
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Chao ChenLitan Yan 《Statistics & probability letters》2011,81(8):1003-1012
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Zhi-Wei Sun 《Discrete Mathematics》2008,308(18):4231-4245
In this paper we study recurrences concerning the combinatorial sum and the alternate sum , where m>0, n?0 and r are integers. For example, we show that if n?m-1 then
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We consider the following nonlinear Schrödinger equations in Rn
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Let (X,T) be a topological dynamical system and be a sub-additive potential on C(X,R). Let U be an open cover of X. Then for any T-invariant measure μ, let . The topological pressure for open covers U is defined for sub-additive potentials. Then we have a variational principle:
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We study the closed ideal in the Beurling algebras of holomorphic function f in the bidisc such that
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A Hausdorff topological group G is minimal if every continuous isomorphism f:G→H between G and a Hausdorff topological group H is open. Significantly strengthening a 1981 result of Stoyanov, we prove the following theorem: For every infinite minimal abelian group G there exists a sequence of cardinals such that
9.
Zhi-Hong Sun 《Journal of Number Theory》2008,128(2):280-312
Let [x] be the integral part of x. Let p>5 be a prime. In the paper we mainly determine , , and in terms of Euler and Bernoulli numbers. For example, we have
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Zhi-Wei Sun 《Journal of Number Theory》2011,131(12):2387-2397
The nth Delannoy number and the nth Schröder number given by
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Zongming Guo 《Journal of Differential Equations》2007,240(2):279-323
We consider the following Cauchy problem with a singular nonlinearity
- (P)
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16.
Angela Paicu 《Nonlinear Analysis: Theory, Methods & Applications》2010,72(11):4091-1391
We prove the existence of C0-solutions for a class of nonlinear evolution equations subjected to nonlocal initial conditions, of the form:
17.
Pierre Gillibert 《Journal of Pure and Applied Algebra》2010,214(8):1306-1318
We denote by the semilattice of all compact congruences of an algebra A. Given a variety V of algebras, we denote by the class of all semilattices isomorphic to for some A∈V. Given varieties V and W of algebras, the critical point of V under W is defined as . Given a finitely generated variety V of modular lattices, we obtain an integer ?, depending on V, such that for any n≥? and any field F.In a second part, using tools introduced in Gillibert (2009) [5], we prove that:
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Immo Hahlomaa 《Advances in Mathematics》2008,219(6):1894-1915
We show that for any metric space X the condition
20.
We study the inverse spectral problem for a class of Bessel operators given in L2(0,1) by the differential expression