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A spectral identity between symmetric spaces

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Abstract

Let π be a cuspidal automorphic representation ofGL 2n . We prove an identity between two spectral distributions onSp 2n andGL 2n respectively. The first is the spherical distribution with respect toSp n×Sp nof the residual Eisenstein series induced from π. The second is the weighted spherical distribution of π with respect toGL n×GL nand a certain degenerate Eisenstein series. A similar identity relates the pair (U 2n ,Sp n) and (GL n/E,GL n/F) whereE/F is the quadratic extension defining the quasi-split unitary groupU 2n . We also have a Whittaker version of these trace identities.

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First-named author partially supported by NSF grant DMS 0070611.

Second-named author partially supported by NSF grant DMS 9970342.

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Lapid, E., Rallis, S. A spectral identity between symmetric spaces. Isr. J. Math. 140, 221–244 (2004). https://doi.org/10.1007/BF02786633

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  • DOI: https://doi.org/10.1007/BF02786633

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