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Theorem nhds_within_Iio_ne_bot'

Modification history

2021-12-07 06:39
src/topology/algebra/ordered/basic.lean
feat(topology/algebra/ordered/basic): Add alternative formulations of four lemmas. (#10630) …
Modified nhds_within_Iio_ne_bot'View on Github →
2020-01-02 09:04
src/topology/algebra/ordered.lean
feat(topology/algebra/ordered): prove that `nhds_within (Ioi a) b ≠ ⊥` if `a ≤ b` (#1841) …
Added nhds_within_Iio_ne_bot'View on Github →