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Fano 4-folds with $b_2>12$ are products of surfaces. (arXiv:2301.11953v1 [math.AG]) http://arxiv.org/abs/2301.11953
Fano 4-folds with $b_2>12$ are products of surfaces. (arXiv:2301.11953v1 [math.AG]) http://arxiv.org/abs/2301.11953