The Deligne–Ribet integrality conjecture for CM characters
Let EEE be a totally real number field, and let χ:AE×/E×→Zˉp×\chi:\mathbb A_E^\times/E^\times\rightarrow\bar{\mathbb Z}_p^\timesχ:AE×/E×→Zˉp× be a finite-order character cutting out a non-real CM extensio…