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Mirrors > Home > ILE Home > Th. List > biimparc | GIF version |
Description: Inference from a logical equivalence. (Contributed by NM, 3-May-1994.) |
Ref | Expression |
---|---|
biimpa.1 | ⊢ (𝜑 → (𝜓 ↔ 𝜒)) |
Ref | Expression |
---|---|
biimparc | ⊢ ((𝜒 ∧ 𝜑) → 𝜓) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | biimpa.1 | . . 3 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) | |
2 | 1 | biimprcd 159 | . 2 ⊢ (𝜒 → (𝜑 → 𝜓)) |
3 | 2 | imp 123 | 1 ⊢ ((𝜒 ∧ 𝜑) → 𝜓) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ↔ wb 104 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: biantr 936 elrab3t 2834 difprsnss 3653 elpw2g 4076 elon2 4293 ideqg 4685 elrnmpt1s 4784 elrnmptg 4786 fun11iun 5381 eqfnfv2 5512 fmpt 5563 elunirn 5660 spc2ed 6123 tposfo2 6157 tposf12 6159 dom2lem 6659 enfii 6761 ac6sfi 6785 ltexprlemm 7401 elreal2 7631 fihasheqf1oi 10527 bastop2 12242 |
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