Mathlib v3 is deprecated. Go to Mathlib v4

Commit 2022-08-11 18:42 802513cb

View on Github →

feat(ring_theory/adjoin_root): a bit of missing API for maps between certain quotients of adjoin_root f (#15757) A few lemmas needed for #15000.

Estimated changes

Modified src/algebra/ring/equiv.lean

added theorem ring_equiv.symm_trans_apply

Modified src/ring_theory/adjoin_root.lean

added theorem adjoin_root.polynomial.quot_quot_equiv_comm_mk

deleted theorem adjoin_root.polynomial.quot_quot_equiv_comm_mk_mk

added theorem adjoin_root.polynomial.quot_quot_equiv_comm_symm_mk_mk

added def adjoin_root.quot_adjoin_root_equiv_quot_polynomial_quot

added theorem adjoin_root.quot_adjoin_root_equiv_quot_polynomial_quot_symm_mk_mk

added theorem adjoin_root.quot_map_C_map_span_mk_equiv_quot_map_C_quot_map_span_mk_symm_quot_quot_mk

deleted def adjoin_root.quot_map_of_equiv

added theorem adjoin_root.quot_map_of_equiv_quot_map_C_map_span_mk_symm_mk

Modified src/ring_theory/ideal/quotient.lean

added theorem ideal.quot_equiv_of_eq_symm