[Merged by Bors] - refactor(order/filter/basic): add class filter.ne_bot
#3454
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This way Lean will find a few most common `≠ ⊥` arguments (incl. `nhds_ne_bot`, `at_top_ne_bot`) automatically.
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sgouezel
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Jul 19, 2020
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Co-authored-by: sgouezel <sebastien.gouezel@univ-rennes1.fr>
…mathlib into ne-bot-class
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bors merge |
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I wonder why this isn't batched with #3444. Going to see if I can batch them by hand. |
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This way Lean will f`≠ ⊥` in a few most common cases (incl. `nhds_ne_bot`, `at_top_ne_bot`) automatically. Other API changes: * many lemmas now take `[ne_bot l]` instead of `(hl : l ≠ ⊥)`; * some lemmas got `'` versions that take an explicit `(hl : ne_bot l)`; * rename `ultrafilter_unique` to `is_ultrafilter.unique`; * `cauchy_downwards` is now `cauchy.mono` (instance arg) and `cauchy.mono'` (explicit arg); * `cauchy_map` is now `cauchy.map`; * `cauchy_comap` is now `cauchy.comap`; * `totally_bounded_closure` is now `totally_bounded.closure`; * `totally_bounded_image` is now `totally_bounded.image`;
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filter.ne_botfilter.ne_bot
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This way Lean will f
≠ ⊥in a few most common cases(incl.
nhds_ne_bot,at_top_ne_bot) automatically.Other API changes:
[ne_bot l]instead of(hl : l ≠ ⊥);'versions that take an explicit(hl : ne_bot l);ultrafilter_uniquetois_ultrafilter.unique;cauchy_downwardsis nowcauchy.mono(instance arg) andcauchy.mono'(explicit arg);cauchy_mapis nowcauchy.map;cauchy_comapis nowcauchy.comap;totally_bounded_closureis nowtotally_bounded.closure;totally_bounded_imageis nowtotally_bounded.image;