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The Invariant of Chen-Nagano on Flag Manifolds
Cristián U. Sánchez
Proceedings of the American Mathematical Society
Vol. 118, No. 4 (Aug., 1993), pp. 1237-1242
Published by: American Mathematical Society
Stable URL: http://www.jstor.org/stable/2160084
Page Count: 6
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In this paper an extension of the 2-number ( #2(M)) of a symmetric space is given for k-symmetric spaces. The new invariant is computed for flag manifolds which are not symmetric. It turns out to be equal to the Euler-Poincaré characteristic.
Proceedings of the American Mathematical Society © 1993 American Mathematical Society