Recent content by mynameiseva

Hi all. I'm new to the forum. Just stumbled across the link to this thread. Anyway, I noticed that some of you were asking for an explanation of some of the motivations and reasons behind the topos theoretic approach to quantum mechanics, and since I'm currently doing a PhD partially focused on...

Thanks a lot. I think I understand now.

Yeah, that's what I mean. I don't understand why people talk about 'closed linear subspaces' when every linear subspace is closed under scalar multiplication and vector addition. Here's an example, "If L is a closed linear subspace of H, then the set of of all vectors in H that are...

Hi. I'm trying to find a good definition of a closed linear subspace (as opposed to any other linear subspace), and I can't find anything concise and comprehensible. Any help will be much appreciated. P.S. I'm not great at analysis, so please try to keep it simple.