Zulip Chat Archive
Stream: triage
Topic: issue !4#2210: Lean fails to find `MulActionWithZero` and...
Random Issue Bot (Jan 26 2026 at 14:16):
Today I chose issue #2210 for discussion!
Lean fails to find MulActionWithZero and Module instances when treating Subring as Subsemiring
Created by @Johan Commelin (@jcommelin) on 2023-02-11
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Is this issue still relevant? Any recent updates? Anyone making progress?
Last updated: Feb 28 2026 at 14:05 UTC