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Commit
2020-05-05 22:33
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feat(data/equiv/basic): some elementary equivs (
#2602
)
Estimated changes
Modified
src/data/equiv/basic.lean
added
def
equiv.fun_unique
added
theorem
equiv.fun_unique_apply
added
theorem
equiv.fun_unique_symm_apply
added
theorem
equiv.sigma_preimage_equiv_apply
added
theorem
equiv.sigma_preimage_equiv_symm_apply_fst
added
theorem
equiv.sigma_preimage_equiv_symm_apply_snd_fst
added
def
equiv.subtype_preimage
added
theorem
equiv.subtype_preimage_apply
added
theorem
equiv.subtype_preimage_symm_apply_coe
added
theorem
equiv.subtype_preimage_symm_apply_coe_neg
added
theorem
equiv.subtype_preimage_symm_apply_coe_pos
added
def
equiv.sum_compl
added
theorem
equiv.sum_compl_apply_inl
added
theorem
equiv.sum_compl_apply_inr
added
theorem
equiv.sum_compl_apply_symm_of_neg
added
theorem
equiv.sum_compl_apply_symm_of_pos