巻号一覧
46 巻 (1994)
- 4 号 p. 443-
- 3 号 p. 295-
- 2 号 p. 141-
- 1 号 p. 1-
46 巻, 3 号
選択された号の論文の11件中1～11を表示しています
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FUMIO NAKAJIMA1994 年 46 巻 3 号 p. 295-310
発行日: 1994/09/01
公開日: 2009/05/22
ジャーナル フリーA boundedness theorem is established for a second order differential equation describing parametric excitations in physics.抄録全体を表示PDF形式でダウンロード (450K) -
TAKESHI KAWAZOE, YOSHIKAZU ONOE, KAZUYA TACHIZAWA1994 年 46 巻 3 号 p. 311-320
発行日: 1994/09/01
公開日: 2009/05/22
ジャーナル フリーUnlike an integrable function on the unit circle which has the nonnegative Fourier coefficients and is square-integrable near the origin, an integrable function on the real line which has the nonnegative Fourier transform and is square-integrable near the origin is not always square-integrable on the real line. We give some examples, and consider an additional condition which guarantees the global square-integrability. Moreover, we treat an analogous problem for an integrable function on the real line which has non-negative wavelet coefficients of the Fourier transform and is squareintegrable near the origin.抄録全体を表示PDF形式でダウンロード (311K) -
NYSHADHAM RAGHAVENDRA, PERIYAPATNA A. VISHWANATH1994 年 46 巻 3 号 p. 321-340
発行日: 1994/09/01
公開日: 2009/05/22
ジャーナル フリーWe construct the moduli space of pairs consisting of a vector bundle together with a vector space of global sections on a fixed algebraic curve over an algebraically closed field of characteristic zero. The infinitesimal deformations of such a pair are shown to be parametrized by the first hypercohomology of a natural complex of sheaves of vector spaces on the base curve. We then apply these results to obtain desingularizations of theta divisors in moduli spaces of semistable vector bundles.抄録全体を表示PDF形式でダウンロード (864K) -
HITOSHI TAKAGI, MAKOTO YAWATA1994 年 46 巻 3 号 p. 341-355
発行日: 1994/09/01
公開日: 2009/05/22
ジャーナル フリーWe consider the bundle of all oriented orthonormal frames over an orientable Riemannian manifold. This bundle has a natural Riemannian metric which is defined by the Riemannian connection of the base manifold. The purpose of the present paper is to clarify the structure of the Lie algebra of the group of all isometries of the bundle with the Riemannian metric.抄録全体を表示PDF形式でダウンロード (529K) -
SATORU IGARI, ENJI SATO1994 年 46 巻 3 号 p. 357-366
発行日: 1994/09/01
公開日: 2009/05/22
ジャーナル フリーWe consider the algebra of translation invariant operators of Lp(T) to Lq(T). If 1≤p<q≤∞, the spectrum of such an operator coincides with the closure of the range of the corresponding multiplier. Furthermore, if p≤2<q, the operating functions on the algebra of multipliers are characterized.抄録全体を表示PDF形式でダウンロード (347K) -
Dedicated to Professor Masaru Takeuchi on his sixtieth birthdaySEIICHI UDAGAWA1994 年 46 巻 3 号 p. 367-391
発行日: 1994/09/01
公開日: 2009/05/22
ジャーナル フリーWe prove that any pluriharmonic map from a compact complex manifold with positive first Chern class (defined outside a certain singularity set of codimension at least two) into a complex Grassmann manifold of rank two is explicitly constructed from a rational map into a complex projective space. Under some restrictions on dimension and rank of the domain manifold and the target manifold, respectively, we also prove that similar results hold for other complex Grassmann manifolds as targets.抄録全体を表示PDF形式でダウンロード (1142K) -
Dedicated to Professor Takesi Kotake on his sixtieth birthdayMAYUMI OHNO, YASUSHI SHIZUTA, TAKU YANAGISAWA1994 年 46 巻 3 号 p. 393-401
発行日: 1994/09/01
公開日: 2009/05/22
ジャーナル フリーThe trace theorem on anisotropic Sobolev spaces is proved. These function spaces which can be regarded as weighted Sobolev spaces are particularly important when we discuss the regularity of solutions of the characteristic initial boundary value problem for linear symmetric hyperbolic systems.抄録全体を表示PDF形式でダウンロード (249K) -
WALCY SANTOS1994 年 46 巻 3 号 p. 403-415
発行日: 1994/09/01
公開日: 2009/05/22
ジャーナル フリーLet Mn be a compact submanifold of a sphere with parallel mean curvature vector h. We introduce a tensor φ, related to h and the second fundamental form, and show that if φ satisfies a certain inequality, then φ≡0 and Mn is totally umbilic or equality holds. The estimate is sharp in the sense that we describe all Mn that satisfy this equality.抄録全体を表示PDF形式でダウンロード (375K) -
GEZA MAKAY1994 年 46 巻 3 号 p. 417-426
発行日: 1994/09/01
公開日: 2009/05/22
ジャーナル フリーWe consider periodic, finite delay differential equations. The first two theorems prove dissipativeness for these equations generalizing a result of Pliss. We use dissipativeness to prove the existence of a periodic solution by a result of Hale and Lopes. In our special case we give short, elementary proof for their theorem. We also present a theorem using Liapunov functionals to show dissipativeness.抄録全体を表示PDF形式でダウンロード (397K) -
TAKASHI KUROSE1994 年 46 巻 3 号 p. 427-433
発行日: 1994/09/01
公開日: 2009/05/22
ジャーナル フリーWe canonically define a square-distance-like function on each simply connected 1-conformally flat statistical manifold and prove that the generalized Pythagorean theorem holds if the statistical manifold has constant curvature.抄録全体を表示PDF形式でダウンロード (287K) -
HYEONBAE KANG1994 年 46 巻 3 号 p. 435-442
発行日: 1994/09/01
公開日: 2009/05/22
ジャーナル フリーWe show that the automorphism group of a certain class of bounded Hartogs domains of infinite type of dimension two is compact.抄録全体を表示PDF形式でダウンロード (250K)
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