Describe epis in LRS#241
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The problem with that proof was: that monos are injective (which is correct) is not sufficient since a priori the rings in the structure sheaf could be arbitrary large. One needs to show that this cannot happen, using a more precise description of monomorphisms. I don't know exactly how this works, so for now, I just remove the claim.
Likewise, the proof that LRSR is well-copowered needed to be fixed since surjectivity of epis alone is not sufficient.