Decomposition in the large of two-forms of constant rank
Dibag, Ibrahim
Annales de l'Institut Fourier, Tome 24 (1974), p. 317-335 / Harvested from Numdam

Le but de ce travail est de trouver les conditions nécessaires et suffisantes pour la décomposition globale d’une 2-forme extérieure w, de rang constant 2s, sur un espace fibré vectoriel E, comme une somme

w=y1ys+1++ysy2s.

La théorie générale est appliquée aux espaces de dimensions inférieures comme les sphères, et les espaces projectifs réels et complexes.

The purpose of this paper is to find necessary and sufficient conditions for globally-decomposing an exterior 2-form w, of constant rank 2s, on a vector-bundle E, as a sum :

w=y1ys+1++ysy2s.

The general theory is applied to low dimensional manifolds, spheres, real and complex projective spaces.

@article{AIF_1974__24_3_317_0,
     author = {Dibag, Ibrahim},
     title = {Decomposition in the large of two-forms of constant rank},
     journal = {Annales de l'Institut Fourier},
     volume = {24},
     year = {1974},
     pages = {317-335},
     doi = {10.5802/aif.529},
     mrnumber = {52 \#11937},
     zbl = {0287.58001},
     language = {en},
     url = {http://dml.mathdoc.fr/item/AIF_1974__24_3_317_0}
}
Dibag, Ibrahim. Decomposition in the large of two-forms of constant rank. Annales de l'Institut Fourier, Tome 24 (1974) pp. 317-335. doi : 10.5802/aif.529. http://gdmltest.u-ga.fr/item/AIF_1974__24_3_317_0/

[1] A. Borel, Sur La Cohomologie des Espaces Fibre Principaux..., Ann. Math., 57 (1953), 115-207. | MR 14,490e | Zbl 0052.40001

[2] A. Borel, F. Hirzebruch, Characteristic Classes and Homogenous Spaces I, Amer. J. Math., 80 (1958), 459-538. | Zbl 0097.36401

[3] J. Martinet, Sur Les Singularités des Formes Differentiables, Thesis Grenoble (1969).

[4] W.S. Massey, Obstructions to the Existence of Almost-Complex Structures, Bull. Amer. Math. Soc, 67 (1961), 559-564. | MR 24 #A2971 | Zbl 0192.29601

[5] C.E. Miller, The Topology of Rotation Groups, Ann. Math, 57 (1953), 91-114. | MR 14,673b | Zbl 0050.17503

[6] Mosher-Tangora, Cohomology Operations and Application in Homotopy Theory, Harper-Row Publishers (1968). | Zbl 0153.53302

[7] N.E. Steenrod, The Topology of Fibre-Bundles, Princeton Univ. Press (1951). | MR 12,522b | Zbl 0054.07103

[8] N.E. Steenrod, Cohomology Operations, Annals of Math Studies, n° 50. | MR 26 #3056 | Zbl 0102.38104

[9] S. Sternberg, Lectures on Differential Geometry, Prentice Hall Edition (1964). | MR 33 #1797 | Zbl 0129.13102

[10] E. Thomas, Complex-Structures on Real Vector-Bundles, Amer. J. Math., 89 (1967), 887-907. | MR 36 #3375 | Zbl 0174.54802