NOTES ON A QUESTION RAISED BY E. CALABI

被引：1

作者：

Euh, Yunhee ^{[1
]}

Sekigawa, Kouei ^{[2
]}

机构：

[1] Natl Inst Math Sci, Div Math Models, Daejeon 34047, South Korea

[2] Niigata Univ, Fac Sci, Dept Math, Niigata 9502181, Japan

来源：

BULLETIN OF THE KOREAN MATHEMATICAL SOCIETY | 2016年 / 53卷 / 01期

关键词：

orthogonal complex structure; warped product; curvature identity; COMPLEX STRUCTURES;

D O I：

10.4134/BKMS.2016.53.1.083

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

We show that any orthogonal almost complex structure on a warped product Riemannian manifold of an oriented closed surface with nonnegative Gaussian curvature and a round 4-sphere is never integrable. This provides a partial answer to a question raised by E. Calabi.

引用

页码：83 / 90

页数：8

共 50 条

[21] A BOURGEOIS ON SOCIALISM - NOTES ON A READING OF 'FRA SCUOLA E CASA' BY DEAMICIS,E.
BRAMBILLA, A
STUDI PIEMONTESI, 1989, 18 (02): : 469 - 485
[22] Program notes on CD-ROM + 'Classical Notes (Orchestra)' by Richard E. Rodda
不详
PIANO & KEYBOARD, 1996, (182): : 13 - 13
[23] SOME AMENDMENTS TO SIRLUCK,E. TEXTUAL NOTES ON 'AREOPAGITICA' + MILTON
GATTI, H
NOTES AND QUERIES, 1982, 29 (06) : 499 - 500
[24] Notes on Chaetetes milleporaceus M. E. H.
Heritsch, F
AMERICAN JOURNAL OF SCIENCE, 1933, 25 (147) : 257 - 260
[25] SENSE RATIONALITY AS AN EMPIRICAL DISPOSITION OR METHODICAL PRINCIPLE - COMMENTS IN CONNECTION WITH WIRTH,E. CRITICAL NOTES TO THE CENTRAL PERCEPTION OF THE RESEARCH QUESTION IN GEOGRAPHY
SEDLACEK, P
GEOGRAPHISCHE ZEITSCHRIFT, 1982, 70 (02) : 158 - 160
[26] ON A QUESTION RAISED BY BIRKHOFF,GARRETT
PARKER, ET
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY, 1951, 2 (06) : 901 - 901
[27] Jedwabne: Will the right question be raised?
Prizel, I
EAST EUROPEAN POLITICS AND SOCIETIES, 2002, 16 (01) : 278 - 290
[28] 'VIVE E. E.'
BRASH, E
POETRY, 1982, 141 (03) : 154 - 154
[29] E. E. Cummings
Van Dusen, Hugh
TLS-THE TIMES LITERARY SUPPLEMENT, 2015, (5835): : 6 - 6
[30] HOWARD,ROBERT,E. HYBORIAN TALES AND THE QUESTION OF RACE IN FANTASTIC LITERATURE
DITOMMASO, L
EXTRAPOLATION, 1996, 37 (02) : 151 - 170

← 1 2 3 4 5 →