[Merged by Bors] - feat: add NatCast, IntCast, and NatSucc positivity extensions #2402
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dwrensha
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Feb 20, 2023
dwrensha
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- Adds positivity extensions for casting from nats and ints, corresponding to this mathlib3 code.
- Adds positivity extension for Nat.succ, corresponding to this mathlib3 code.
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LGTM bors merge |
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* Adds positivity extensions for casting from nats and ints, corresponding to [this mathlib3 code](https://github.com/leanprover-community/mathlib/blob/bd9851ca476957ea4549eb19b40e7b5ade9428cc/src/tactic/positivity.lean#L680-L690). * Adds positivity extension for Nat.succ, corresponding to [this mathlib3 code](https://github.com/leanprover-community/mathlib/blob/bd9851ca476957ea4549eb19b40e7b5ade9428cc/src/tactic/positivity.lean#L704-L708).
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