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missing add_left_cancel #78

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joneugster opened this issue Oct 10, 2024 · 2 comments
Open

missing add_left_cancel #78

joneugster opened this issue Oct 10, 2024 · 2 comments
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@joneugster
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As reported on Zulip:

https://leanprover.zulipchat.com/#narrow/stream/113488-general/topic/Bug.20in.20NNG.3F

Is this a namespace/import issue?
@joneugster joneugster added the bug Something isn't working label Oct 10, 2024
@madvorak
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FYI the theorem is in Mathlib.Algebra.Group.Defs.

@joneugster
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I think NNG does not import Mathlib at all, but instead it recreates anything it uses

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@madvorak @joneugster