Commit 2026-09-15 09:35 1e043bcd

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chore(Order/Filter/Extr): rename various lemmas (#41863) Per the mathlib naming conventions

Estimated changes

deleted theorem IsExtrFilter.comp_tendsto
deleted theorem IsExtrOn.comp_mapsTo
added theorem IsExtrOn.of_subset
deleted theorem IsExtrOn.on_preimage
deleted theorem IsExtrOn.on_subset
added theorem IsExtrOn.preimage
deleted theorem IsMaxFilter.comp_tendsto
deleted theorem IsMaxFilter.isExtr
deleted theorem IsMaxOn.comp_mapsTo
added theorem IsMaxOn.comp_of_mapsTo
deleted theorem IsMaxOn.isExtr
added theorem IsMaxOn.isExtrOn
added theorem IsMaxOn.of_subset
deleted theorem IsMaxOn.on_preimage
deleted theorem IsMaxOn.on_subset
added theorem IsMaxOn.preimage
deleted theorem IsMinFilter.comp_tendsto
deleted theorem IsMinFilter.isExtr
deleted theorem IsMinOn.comp_mapsTo
added theorem IsMinOn.comp_of_mapsTo
deleted theorem IsMinOn.isExtr
added theorem IsMinOn.isExtrOn
added theorem IsMinOn.of_subset
deleted theorem IsMinOn.on_preimage
deleted theorem IsMinOn.on_subset
added theorem IsMinOn.preimage