Abstract
Unlike in characteristic , there are no nontrivial smooth varieties over an algebraically closed field of characteristic that are contractible in the sense of étale homotopy theory.
Citation
Armin Holschbach. Johannes Schmidt. Jakob Stix. "Étale contractible varieties in positive characteristic." Algebra Number Theory 8 (4) 1037 - 1044, 2014. https://doi.org/10.2140/ant.2014.8.1037
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