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@wlammen wlammen commented Jan 30, 2026

df-an is the next definition following df-bi. See also line 2397 of set.mm.

Delete outdated OLD theorems.

@wlammen wlammen merged commit 1938360 into metamath:develop Jan 31, 2026
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@wlammen wlammen deleted the wl-2 branch January 31, 2026 12:22
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