martes 21 de mayo de 2013

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## Recursos de colección

Project Euclid (Hosted at Cornell University Library) (168.635 recursos)

Hokkaido Mathematical Journal

Mostrando recursos 1 - 20 de 592

1. Atomic decompositions of weighted Hardy-Morrey spaces - HO, Kwok-Pun
We obtain the Fefferman-Stein vector-valued maximal inequalities on Morrey spaces generated by weighted Lebesgue spaces. Using these inequalities, we introduce and define the weighted Hardy-Morrey spaces by using the Littlewood-Paley functions. We also establish the non-smooth atomic decompositions for the weighted Hardy-Morrey spaces and, as an application of the decompositions, we obtain the boundedness of a class of singular integral operators on the weighted Hardy-Morrey spaces.

2. On the existence of local frames of CR vector bundles - KAJISA, Tomonori
Given a CR manifold D, we shall show that existence of a CR local frame of a certain CR vector bundle over D is equivalent to the local imbeddability of D. This will imply that there exists a CR vector bundle which doesn't have CR local frames. Using this bundle, we shall construct CR line bundles over 3-dimensional non-imbeddable CR manifolds which don't have CR local frames.

3. Takeshita's examples for Leray's Inequality - KOBAYASHI, Teppei
It is well known that Leray's Inequality holds under stringent outflow condition (SOC). But Leray's Inequality does not hold under general outflow condition (GOC). This fact has been proved by Takeshita [8]. But, Takeshita's argument is very complicated. The author succeeds in giving an alternative proof which is simpler than Takeshita's. Moreover, the result is an improvement of Takeshita's result.

4. Generalized wave operators for a system of semilinear wave equations in three space dimensions - KUBO, Hideo; KUBOTA, Kôji
This paper is concerned with the final value problem for a system of semilinear wave equations. The main issue is to solve the problem when the nonlinearity is of a long-range type. By assuming that the solution is spherically symmetric, we shall show global solvability of the final value problem around a suitable final state, and hence, the generalized wave operator and long range-scattering operator can be constructed.

5. A characterization of the standard Reeb flow - MATSUMOTO, Shigenori
Among the topological conjugacy classes of the continuous flows {ϕt} whose orbit foliations are the planar Reeb foliation, there is one special class called the standard Reeb flow. We show that {ϕt} is conjugate to the standard Reeb flow if and only if {ϕt} is conjugate to {ϕλt} for any λ > 0.

6. On generalizations of separable polynomials over rings - HAMAGUCHI, Naoki; NAKAJIMA, Atsushi
We define that a ring extension S/R is weakly separable or weakly quasi-separable by using R-derivations of S, and give the necessary and sufficient condition that the extension R[X]/(Xn − aX − b) of a commutative ring R is weakly separable. Since the notions of weakly separability and weakly quasi-separability coincide for commutative ring extensions, we treat a quotient ring R[x; *] = R[X; *]/f(X)R[X; *] of a skew polynomial ring R[X; *], and show that if R is a commutative domain, then the extension R[x; *]/R is always weakly quasi-separable, where * is either a ring automorphism or a...

7. Linearized stability analysis of surface diffusion for hypersurfaces with triple lines - DEPNER, Daniel; GARCKE, Harald
The linearized stability of stationary solutions for surface diffusion is studied. We consider three hypersurfaces that lie inside a fixed domain and touch its boundary with a right angle and fulfill a non-flux condition. Additionally they meet at a triple line with prescribed angle conditions and further boundary conditions resulting from the continuity of chemical potentials and a flux balance have to hold at the triple line. We introduce a new specific parametrization with two parameters corresponding to a movement in tangential and normal direction to formulate the geometric evolution law as a system of partial differential equations. For the...

8. A note on extreme norms on $\mathbb R$2 - SAITO, Kichi-Suke; MITANI, Ken-Ichi; KOMURO, Naoto
We denote by AN2 the set of all absolute normalized norms on $\mathbb R$2. It is known that the set AN2 and the set of all continuous convex functions ψ on [0,1] with max{1−t,t} ≤ ψ(t) ≤ 1 for t ∈ [0,1] (denoted by Ψ2) are in a one to one correspondence under the equation ψ(t) = ||(1−t,t)||. Recently, we characterized extreme points of AN2 by considering Ψ2. In this paper we give another proof of this result.

9. On strongly separable Frobenius extensions - SUGANO, Kozo

10. A new MacWillams type identity for linear codes - SHIROMOTO, Keisuke

11. Liouville setup and contact cobordism - ADACHI, Jiro

12. Cohen-Macaulay types of Hall lattices - MORITA, Hideaki

13. Symmetry algebras of normal \mathcal{A}-hypergeometric systems - SAITO, Mutsumi

14. The space N(σ) and the F. and M. Riesz theorem - YAMAGUCHI, Hiroshi

15. Anisotropic motion by mean curvature in the context of Finsler geometry - BELLETTINI, G.; PAOLINI, M.

16. Interpolating sequences and embedding theorems in weighted Bergman spaces - YAMADA, Masahiro

17. Isometries of C(n)0(X) - WANG, Risheng

18. Differential field extensions with no movable algebraic branches - NISHIOKA, Keiji

19. Rigidity theorems for real hypersurfaces in a complex projective space - CHOE, Yeong-Wu; SOOK, Hyang; KIM, In-Bae; TAKAGI, Ryoichi

20. Shadows of moving surfaces - SUN, Wei-Zhi