巻号一覧
26 巻 (2003)
- 3 号 p. 245-
- 2 号 p. 137-
- 1 号 p. 1-
26 巻, 2 号
選択された号の論文の7件中1～7を表示しています
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Shoetsu Ogata2003 年 26 巻 2 号 p. 137-146
発行日: 2003年
公開日: 2009/01/21
ジャーナル フリーFor any ample line bundle L on a projective toric variety of dimension n, it is known that the line bundle L⊗i is normally generated if i is greater than or equal to n−1. We prove that L⊗i is also normally presented if i is greater than or equal to n−1. Furthermore we show that L⊗i is normally presented for i≥[n/2]+1 if L is normally generated.抄録全体を表示PDF形式でダウンロード (103K) -
Natsuo Saito2003 年 26 巻 2 号 p. 147-166
発行日: 2003年
公開日: 2009/01/21
ジャーナル フリーThe smooth Fano threefolds with Picard number two in positive characteristic are classified. The each class has the same description as in characteristic zero. We give also a new example of Fano threefolds with Picard number three having a wild conic bundle structure.抄録全体を表示PDF形式でダウンロード (159K) -
Tomoki Kawahira2003 年 26 巻 2 号 p. 167-178
発行日: 2003年
公開日: 2009/01/21
ジャーナル フリーWe construct a pinching semiconjugacy from a quadratic polynomial fc(z)=z2+c with c∈(0, 1/4) to f1/4(z)=z2+1/4 on the sphere. By lifting this semiconjugacy to their natural extensions, we investigate the structure of the regular leaf space of f1/4 in detail.抄録全体を表示PDF形式でダウンロード (443K) -
Do Duc Thai, Pham Ngoc Mai2003 年 26 巻 2 号 p. 179-198
発行日: 2003年
公開日: 2009/04/24
ジャーナル フリーIn this article we show several convergence and extension theorems for analytic hypersurfaces (not necessarily with normal crossings) and for closed pluripolar sets of complex manifolds. Moreover, a generalization of theorem of Alexander to complex spaces is given.抄録全体を表示PDF形式でダウンロード (200K) -
Knut Pawel, Helmut Reckziegel2003 年 26 巻 2 号 p. 199-220
発行日: 2003年
公開日: 2009/04/24
ジャーナル フリーIn this article an analogue of E. Cartan's theorem about the existence of (local) totally geodesic submanifolds with a prescribed tangent plane is proved, namely for the existence of spherically bent submanifolds (=extrinsic spheres); also a global version is deduced.抄録全体を表示PDF形式でダウンロード (197K) -
Jin Lu2003 年 26 巻 2 号 p. 221-229
発行日: 2003年
公開日: 2009/01/21
ジャーナル フリーIn this paper, some theorems of Picard type relating to the total derivative for entire functions of several complex variables are proved.抄録全体を表示PDF形式でダウンロード (84K) -
Katsuhiro Komiya2003 年 26 巻 2 号 p. 230-243
発行日: 2003年
公開日: 2009/01/21
ジャーナル フリーIf we are given a G-manifold M, G a finite abelian group of odd order, by taking fixed submanifolds MH for various subgroups H of G, we obtain a family (MH)H≤G of submanifolds of M. The Euler characteristics χ(MH) of such submanifolds satisfy some congruence relations. Conversely, in this paper we show that if we are given a family (Ni) of submanifolds Ni of a manifold N and if the Euler characteristics χ(Ni) satisfy some congruence relations, then, after adding some family, (Ni) can be cut and pasted into a family obtained from a G-manifold.抄録全体を表示PDF形式でダウンロード (145K)
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