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user400188

05:52

I'm planning to ask my first question here, but I want to be absolutely sure that it's on topic and within the site guidelines. So I've made a draft on the MSE sandbox meta post, and I was wondering if anyone was willing to check it over for me? (If that's not too much to ask).

Martin Sleziak

Of course, including a link would certainly help the people who are possibly willing to have a look: math.meta.stackexchange.com/questions/4666/… math.meta.stackexchange.com/revisions/11872/275

A: Sandbox for drafts of long, complex posts

Is there an example Hamiltonian that is uncomputable? In a paper from 2015 Toby S. Cubitt et al showed that the problem of determining the existence of a band gap in the excitation spectrum of a quantum many-body system, was undecidable. This result applied to atoms interacting via nearest neighb...

I suppose ^^^this is the one you mean - I saw that you edited that post recently.

user400188

Oh yes, sorry. I should have done that but I didn't want to be too presumptuous.

That's the right post.

Martin Sleziak

The topic is far from things I know about - so I won't be able to help.

user400188

Ok then, thank you for looking :)

Martin Sleziak

Let's hope that somebody might notice your message here. (Although - as you can see - this room is not used that much.)

In any case, have a nice day (and good luck with your question)!

user400188

06:01

Yeah, I have considered asking on MSE and physics SE too, but I'm not sure if spamming every SE chat asking for a proof read is the right thing to do.

Thanks for the well wishes.

4 hours later…

Desura

10:21

Hello, does anyone have a reference for this : https://math.stackexchange.com/questions/4264549/reference-request-fuchs-theorem-for-inhomogeneous-equations ?
Thanks :)

Martin Sleziak

For the sake of better readability, here is the same link including the title: Reference request : Fuchs' theorem for inhomogeneous equations.

Desura

Thank you, I'm not used to these chats !

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