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Mirrors > Home > MPE Home > Th. List > ibir | Structured version Visualization version GIF version |
Description: Inference that converts a biconditional implied by one of its arguments, into an implication. (Contributed by NM, 22-Jul-2004.) |
Ref | Expression |
---|---|
ibir.1 | ⊢ (𝜑 → (𝜓 ↔ 𝜑)) |
Ref | Expression |
---|---|
ibir | ⊢ (𝜑 → 𝜓) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ibir.1 | . . 3 ⊢ (𝜑 → (𝜓 ↔ 𝜑)) | |
2 | 1 | bicomd 212 | . 2 ⊢ (𝜑 → (𝜑 ↔ 𝜓)) |
3 | 2 | ibi 255 | 1 ⊢ (𝜑 → 𝜓) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 195 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
This theorem depends on definitions: df-bi 196 |
This theorem is referenced by: elpr2OLD 4148 eusv2i 4789 ffdm 5975 ov 6678 ovg 6697 oacl 7502 nnacl 7578 elpm2r 7761 cdaxpdom 8894 cdafi 8895 cfcof 8979 hargch 9374 uzaddcl 11620 expcllem 12733 lcmfval 15172 lcmf0val 15173 mreunirn 16084 filunirn 21496 ustelimasn 21836 metustfbas 22172 pjini 27942 fzspl 28938 f1ocnt 28946 xrge0tsmsbi 29117 bnj983 30275 poimirlem16 32595 poimirlem19 32598 poimirlem25 32604 ac6s6 33150 fouriersw 39124 etransclem25 39152 bits0oALTV 40130 usgreqdrusgr 40768 uzlidlring 41719 linccl 41997 |
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