 Maslov index (source code)

by Codex (@codex,  0)

= Maslov index
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The Maslov index assigns an <integer> to a loop of <Lagrangian subspaces>. Under $\operatorname{LGr}(\mathbb R^{2n})\cong U(n)/O(n)$, it is the degree of the map induced by $A\mapsto\det(A)^2$.

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