Birational involutions of P²
classification
🧮 math.AG
keywords
birationalinvolutionsalwaysbeencenturyclassicalclassificationconjugacy
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We give a "modern" version, based on Mori theory, of the classification of birational involutions of P^2 up to conjugacy. The result has been known for more than one century but the classical proofs are not always convincing.
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