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Right now, [ax-3](https://github.com/metamath/set.mm/blob/develop/iset.mm#L7523) is present but marked with "New usage is discouraged". The whole point, of course, of iset.mm is that we can develop lo…
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Hey, before I put this in pull request form, just wanted to check whether this is the right place.
I came up with an expansion to mmil.html (basically, a start on an axioms section for intuitionist…
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I am trying to proof the following:
```haskell
type WhyDomainMatches a b (n :: Nat)
= ToDomain (Replicate n (a -> b)) :~: Replicate n a
```
where
```haskell
type family ToDomain (xs :: […
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Via email, I said:
> Mainly the problem here is that the text calls '\bot Introduction' the rule that I think of as '\neg Elimination'; there is no '\neg Elimination' rule. This breaks the nice s…
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Using b7f15d5eb748f1d8c23a76ccdbc2bd54ff6377ed of iset.mm (from the develop branch of https://github.com/metamath/set.mm ), mmj2 crashes on startup.
```
OpenJDK 64-Bit Server VM warning: Using inc…
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Currently the "book" goes right into first-order logic. People might want to start with propositional logic, especially if it's for a course that continues wih propositional logic only (say, modal, i…
rzach updated
7 years ago
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The current version of content/fol/natural-deduction has the rules for \lnot and \lfalse just like eg Language, Proof, and Logic (eg A, \lnot A \proves \lfalse is called \lfalse Intro and not \lnot El…
rzach updated
7 years ago
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Note: the issue was created automatically with bugzilla2github tool
Original bug ID: BZ#3216
From: @JasonGross
Reported version: 8.5
CC: @gares, @ezyang, @ppedrot
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Note: the issue was created automatically with bugzilla2github tool
Original bug ID: BZ#3280
From: @JasonGross
Reported version: trunk
CC: @mattam82, @ppedrot
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I think there is a third alternative that I don't see really anywhere. Namely, that God's existence may be rationally indeterminate. His existence is neither provable nor demonstrably false via reaso…