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利用同胚延拓方法和Schauder不动点定理,研究了一类一般2k型阶常微分方程组,得出了其解的存在性定理.
A comparison principle for the integro-differential equation with the L´evy operator corresponding to the spacial depending jump process is presented in this paper. The jump (x, z) at a point x...
By gauging the Maxwell spacetime algebra we extend the standard geometric framework of Ein- stein gravity by the addition of six fourvector fields Aab μ (x) associated with the six abelian tensorial ...
In recent years there has been a considerable increase in the publishing of textbooks and mono- graphs covering what was formerly known as random or irregular deterministic motion, now named by the ...
Tiling recognizable two-dimensional languages, also known as REC,generalize recognizable string languages to two dimensions and share with them several theoretical properties. Nevertheless REC is not ...
We analyze the paper by Wazwaz and Mehanna [Wazwaz A.M., Mehanna M.S., A variety of exact travelling wave solutions for the (2+1) -- dimensional Boiti -- Leon -- Pempinelli equation, Appl. Math. Comp....
Uniaxial nematic liquid crystals are modelled in the Oseen-Frank theory through a unit vector field n. This theory has the apparent drawback that it does not respect the head-to-tail symmetry in which...
Given a sequence (C, T) = (C, T1, T2, . . .) of real-valued random variables with Tj ≥ 0 for all j ≥ 1 and almost surely finite N = sup{j ≥1 : Tj > 0}, the smoothing transform associated with (C, T), ...
Uncertainty relations give upper bounds on the accuracy by which the outcomes of two incompatible measurements can be predicted. While the established uncertainty relations apply to cases where the pr...
We consider deformations of bounded complexes of modules for a profinite group G over a field of positive characteristic. We prove a finiteness theorem which provides some sufficient conditions for th...
We adapt Streicher and Kohlenbach’s proof of the factorization S = KD of the Shoenfield translation S in terms of Krivine’s negative translation K and the G¨odel functional interpretation D, obtaining...
Let G be an arbitrary finite group. The McKay conjecture asserts that G and the normaliser NG(P) of a Sylow p-subgroup P in G have the same number of characters of degree not divisible by p (that is...
We find linearly independent solutions of the Goncharov-Firsova equation in the case of a massive complex scalar field on a Kerr black hole. The solutions generalize, in some sense, the classical mono...
We show how co-chordal covers of the edges of a graph give upper bounds on the Castelnuovo-Mumford regularity of its edge ideal. The proof is by an easy application of a deep result of Kalai and Mesh...
Given E  Rd, d  2, de ne D(E) n x􀀀y jx􀀀yj : x; y 2 E o  Sd􀀀1; the set of directions determined by E. We prove that if the Hausdor dimension of E is greater than d ...

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