[Merged by Bors] - feat: ab < ac and b ≤ c implies 0 < a#35302
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CoolRmal wants to merge 1 commit intoleanprover-community:masterfrom
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[Merged by Bors] - feat: ab < ac and b ≤ c implies 0 < a#35302CoolRmal wants to merge 1 commit intoleanprover-community:masterfrom
CoolRmal wants to merge 1 commit intoleanprover-community:masterfrom
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PR summary fd6add7853Import changes for modified filesNo significant changes to the import graph Import changes for all files
Declarations diff
You can run this locally as follows## summary with just the declaration names:
./scripts/declarations_diff.sh <optional_commit>
## more verbose report:
./scripts/declarations_diff.sh long <optional_commit>The doc-module for No changes to technical debt.You can run this locally as
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vihdzp
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Feb 14, 2026
Comment on lines
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| by_cases! ha : 0 < a | ||
| · exact ha | ||
| · grind [mul_le_mul_of_nonpos_left hbc ha] |
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Does this work? Same below.
Suggested change
| by_cases! ha : 0 < a | |
| · exact ha | |
| · grind [mul_le_mul_of_nonpos_left hbc ha] | |
| by_contra! ha | |
| grind [mul_le_mul_of_nonpos_left hbc ha] |
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No this does not work. I guess it is because ha has two different meanings in these two subgoals.
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Huh, why does it not work? I would have expected that that to work as well
mathlib-bors bot
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Feb 15, 2026
[#Is there code for X? > a * b < a * c and b < c implies 0 < a](https://leanprover.zulipchat.com/#narrow/channel/217875-Is-there-code-for-X.3F/topic/a.20*.20b.20.3C.20a.20*.20c.20and.20b.20.3C.20c.20implies.200.20.3C.20a/with/573860260)
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Pull request successfully merged into master. Build succeeded: |
Maldooor
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Feb 25, 2026
[#Is there code for X? > a &leanprover-community#42; b < a &leanprover-community#42; c and b < c implies 0 < a](https://leanprover.zulipchat.com/#narrow/channel/217875-Is-there-code-for-X.3F/topic/a.20*.20b.20.3C.20a.20*.20c.20and.20b.20.3C.20c.20implies.200.20.3C.20a/with/573860260)
pfaffelh
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Mar 2, 2026
[#Is there code for X? > a &leanprover-community#42; b < a &leanprover-community#42; c and b < c implies 0 < a](https://leanprover.zulipchat.com/#narrow/channel/217875-Is-there-code-for-X.3F/topic/a.20*.20b.20.3C.20a.20*.20c.20and.20b.20.3C.20c.20implies.200.20.3C.20a/with/573860260)
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#Is there code for X? > a * b < a * c and b < c implies 0 < a