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Commit 2021-01-20 04:42 a3ef65da

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feat(algebra/lie/basic): additional lemmas concerning lie_algebra.derived_series_of_ideal (#5815)

Estimated changes

Modified src/algebra/lie/basic.lean

added theorem lie_algebra.derived_series_of_ideal_add

added theorem lie_algebra.derived_series_of_ideal_antimono

modified theorem lie_algebra.derived_series_of_ideal_le

added theorem lie_algebra.derived_series_of_ideal_le_self

added theorem lie_algebra.derived_series_of_ideal_mono

modified theorem lie_algebra.derived_series_of_ideal_succ_le