Obstruction to lagrangian transversality
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We give a necessary and sufficient condition for lagrangians in a symplectic vector bundle to be deformed stably into transversal lagrangians. In the case of three lagrangians, we show that the associated Grothendieck group can be identified with a Hermitian K-theory group.
7 pages ; see also http://www.math.jussieu.fr/~karoubi/
7 pages ; see also http://www.math.jussieu.fr/~karoubi/