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Related theorems GIF version |
| Description: Inference disjoining the antecedents of two implications. |
| Ref | Expression |
|---|---|
| jaoi.1 | ⊢ (φ → ψ) |
| jaoi.2 | ⊢ (χ → ψ) |
| Ref | Expression |
|---|---|
| jaoi | ⊢ ((φ ∨ χ) → ψ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | jaoi.1 | . 2 ⊢ (φ → ψ) | |
| 2 | jaoi.2 | . 2 ⊢ (χ → ψ) | |
| 3 | jao 274 | . 2 ⊢ ((φ → ψ) → ((χ → ψ) → ((φ ∨ χ) → ψ))) | |
| 4 | 1, 2, 3 | mp2 43 | 1 ⊢ ((φ ∨ χ) → ψ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ∨ wo 195 |
| This theorem is referenced by: pm5.18 497 orbidi 510 ccase 562 consensus 574 prlem1 576 19.33 770 19.33b 771 eqvin.l1 851 mooran1 1049 2eu3 1069 eueq3 1430 sspss 1569 ssnpss 1573 sspsstr 1575 elun 1601 ssun 1634 ifbi 1783 sssn 1852 preq12b 1874 pwpw0 1883 zfpair 1891 prex 1892 opth 1898 iununi 2037 ordeleqon 2241 ordssun 2330 ordequn 2331 ordunisuc 2339 onun 2358 limsuc 2361 unizlim 2364 orduninsuc 2365 onzsl 2367 limomss 2378 limom 2387 tfinds 2401 onxpdisj 2476 erref 3212 domnsym 3365 domsdomtr 3374 phplem4 3406 ssnn 3429 rankun 3535 iscard3 3693 indpi 3828 prlem934 3933 suppsr2 4017 mul0or 4210 ltlent 4288 addgegt0 4325 sqgt0 4343 posex 4422 elnn0z 4574 nn0subt 4587 elnn0nn 4593 nn0ind 4612 discrlem 4716 sqrth 4757 sqrcl 4758 sqrge0 4760 leabs 4852 facp1t 4873 infxpidmlem4 4936 infxpidmlem7 4939 shunss 5338 mdsym 5784 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 |