An equidistribution theorem for biraitonal maps of Pk\mathbb{P}^k

preprint2020arXivOpen access

Abstract

We prove an equidistribution theorem of positive closed currents for a certain class of birational maps f+:Pk→Pkf_+:\mathbb{P}^k\to\mathbb{P}^k of algebraic degree d≥2d\geq 2 satisfying ⋃n≥0f−n(I+)∩⋃n≥0f+n(I−)=∅\bigcup_{n\geq 0}f_-^n(I^+)\cap \bigcup_{n\geq 0}f_+^n(I^-)=\emptyset, where f−f_- is the inverse of f+f_+ and I±I^\pm are the sets of indeterminacy for f±f_\pm, respectively.

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