Hi! Let (V, ) be a symplectic vector space (meaning is skew symmetric and non-degenerate) with an inner product g. How can one construct a basis that is both g-orthogonal and a Darboux basis: http://en.wikipedia.org/wiki/Darboux_basis?
I think one can assume that with g=euclidean scalar product and hence with A skew symmetric. But i neither know how to show the claim for this special case, nor how to generalize it.
Can anybody help me?