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Creators/Authors contains: "Greer, François"

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  1. Abstract We consider the generating series of special cycles on , with full level structure, valued in the cohomology of degree . The modularity theorem of Kudla–Millson for locally symmetric spaces implies that these series are modular. When , the images of these loci in are the ‐elliptic Noether–Lefschetz loci, which are conjectured to be modular. In the Appendix, it is shown that the resulting modular forms are nonzero for when and . 
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  2. Abstract We prove that the period mapping is dominant for elliptic surfaces over an elliptic curve with$$12$$nodal fibers, and that its degree is larger than$$1$$. This settles the final case of infinitesimal Torelli for a generic elliptic surface. 
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    Free, publicly-accessible full text available November 26, 2025