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Harmonic Maa{\ss}-Jacobi forms of degree 1 with higher rank indices
We define and investigate real analytic weak Jacobi forms of degree 1 and
arbitrary rank. En route we calculate the Casimir operator associated to the
maximal central extension of the real Jacobi group, which for rank exceeding 1
is of order 4. In ranks exceeding 1, the notions of H-harmonicity and
semi-holomorphicity are the same.Comment: 28 page