Talk:Spectrum of Element in Unital Subalgebra

sorry I've been making quite a few mistakes last week or so, blame the heat idk. thanks for pointing them all out. Caliburn (talk) 19:41, 23 August 2023 (UTC)
 * No problem, these are great contributions. I am happy to read them. --Usagiop (talk) 19:57, 23 August 2023 (UTC)
 * Thanks. I hope to get up to holomorphic functional calculus and then I will have to do some Banach space integration theory. Caliburn (talk) 21:23, 23 August 2023 (UTC)