Zulip Chat Archive

Stream: mathlib4

Topic: Bad TopCat.Presheaf.pushforward notation


Eric Wieser (Sep 24 2024 at 15:29):

I'm sure I made this thread before, but now I can't find it. The following code works:

example :  x, x = 2 * 3 := by
  exact ⟨_*_, rfl

but with import Mathlib, it fails:

import Mathlib

example :  x, x = 2 * 3 := by
  exact ⟨_*_, rfl -- bizarre error message

-- the notation parses as this now!
#check _ _* _

Can we make this notation scoped, or pick something different?

Eric Wieser (Sep 24 2024 at 15:34):

#17101


Last updated: May 02 2025 at 03:31 UTC