Unitary cycles on Shimura curves and the Shimura lift. I
Documenta mathematica, Tome 18 (2013), pp. 1403-1464

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This paper concerns two families of divisors, which we call the 'orthogonal' and 'unitary' special cycles, defined on integral models of Shimura curves. The orthogonal family was studied extensively by Kudla-Rapoport-Yang, who showed that they are closely related to the Fourier coefficients of modular forms of weight 3/2, while the unitary divisors are analogues of cycles appearing in more recent work of Kudla-Rapoport on unitary Shimura varieties. Our main result relates these two families by (a formal version of) the Shimura lift.
DOI : 10.4171/dm/431
Classification : 11F30, 11G18, 14G35
Siddarth Sankaran. Unitary cycles on Shimura curves and the Shimura lift. I. Documenta mathematica, Tome 18 (2013), pp. 1403-1464. doi: 10.4171/dm/431
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     author = {Siddarth Sankaran},
     title = {Unitary cycles on {Shimura} curves and the {Shimura} lift. {I}},
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