%0 Journal Article %A Frédéric Chapoton %T Posets and fractional Calabi–Yau categories %J Mathematics Research Reports %D 2025 %P 1-16 %V 6 %I MathOA foundation %U https://mrr.centre-mersenne.org/articles/10.5802/mrr.21/ %R 10.5802/mrr.21 %G en %F MRR_2025__6__1_0