https://pzhou.org/ 2026-08-18T04:27:13+00:00 https://pzhou.org/ https://pzhou.org/lib/tpl/dokuwiki/images/favicon.ico text/html 2023-09-13T23:14:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://pzhou.org/examples/matrix-factorization?rev=1694646877&do=diff Matrix Factorization $\gdef\ccal{\mathcal C}$ [N] section 2.1 By a dg category $\ccal$, we mean a stable differential $\Z$-graded category. The hom complex is a $\Z$-graded cochain complex. We have a shift functor $[n]$ for any $n \in \Z$. By a 2-periodic dg category $\ccal$, we mean a $\Z$-graded category that the functor $[2]$ is equivalent to identity. Note that the hom complex is $\Z$-graded. text/html 2023-09-12T05:06:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://pzhou.org/examples/start?rev=1694495213&do=diff Examples