Antispecial cycles on the Drinfeld upper half plane and degenerate Hirzebruch–Zagier cycles |
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Authors: | Ulrich Terstiege |
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Institution: | 1.Mathematisches Institut der Universit?t Bonn,Bonn,Germany |
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Abstract: | We define the notion of antispecial cycles on the Drinfeld upper half plane in analogy to the notion of special cycles in
Kudla and Rapoport (Invent Math 142:153–223, 2000). We determine equations for antispecial cycles and calculate the intersection
multiplicity of two antispecial cycles. The result is applied to calculate the intersection multiplicity of certain degenerate
Hirzebruch–Zagier cycles. Finally we compare this intersection multiplicity to certain representation densities. |
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Keywords: | |
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