Lagrange inversion is rederived as Chern numbers of CP^n via Chern-Dold character, with a parallel interpretation for multiplicative inversion using theta divisors and a new Catalan formal group.
McMullenModuli spaces in genus zero and inversion of power series.L’Enseign
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Algebraic topology of the Lagrange inversion
Lagrange inversion is rederived as Chern numbers of CP^n via Chern-Dold character, with a parallel interpretation for multiplicative inversion using theta divisors and a new Catalan formal group.