QUASI-JACOBI FORMS, ELLIPTIC GENERA AND STRINGS IN FOUR DIMENSIONS

Quasi-Jacobi forms, elliptic genera and strings in four dimensions

Abstract We investigate the interplay between the enumerative geometry of Calabi-Yau fourfolds with fluxes and the modularity of elliptic genera in four-dimensional string theories.We argue that certain contributions to the elliptic genus are given by derivatives of modular or quasi-modular forms, which may encode BPS invariants of Calabi-Yau or no

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Cooperative interactions in the West Nile virus mutant swarm

Abstract Background RNA viruses including arthropod-borne viruses (arboviruses) exist as highly genetically diverse mutant swarms within individual hosts.A more complete understanding of the phenotypic correlates of these diverse swarms is needed in order to equate RNA swarm breadth and composition to specific adaptive and evolutionary outcomes.Res

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