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| Mirrors > Home > ILE Home > Th. List > olc | GIF version | ||
| Description: Introduction of a disjunct. Axiom *1.3 of [WhiteheadRussell] p. 96. (Contributed by NM, 30-Aug-1993.) (Revised by NM, 31-Jan-2015.) |
| Ref | Expression |
|---|---|
| olc | ⊢ (𝜑 → (𝜓 ∨ 𝜑)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | id 19 | . . 3 ⊢ ((𝜓 ∨ 𝜑) → (𝜓 ∨ 𝜑)) | |
| 2 | jaob 715 | . . 3 ⊢ (((𝜓 ∨ 𝜑) → (𝜓 ∨ 𝜑)) ↔ ((𝜓 → (𝜓 ∨ 𝜑)) ∧ (𝜑 → (𝜓 ∨ 𝜑)))) | |
| 3 | 1, 2 | mpbi 145 | . 2 ⊢ ((𝜓 → (𝜓 ∨ 𝜑)) ∧ (𝜑 → (𝜓 ∨ 𝜑))) |
| 4 | 3 | simpri 113 | 1 ⊢ (𝜑 → (𝜓 ∨ 𝜑)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∨ wo 713 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-io 714 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: oibabs 719 pm1.4 732 olci 737 pm2.07 742 pm2.46 744 biorf 749 pm1.5 770 pm2.41 781 pm4.78i 787 pm3.48 790 ordi 821 andi 823 pm4.72 832 stdcn 852 pm2.54dc 896 pm2.85dc 910 dcor 941 dedlemb 976 anifpdc 992 xoranor 1419 19.33 1530 hbor 1592 nford 1613 19.30dc 1673 19.43 1674 19.32r 1726 euor2 2136 mooran2 2151 r19.32r 2677 undif3ss 3466 undif4 3555 issod 4414 onsucelsucexmid 4626 sucprcreg 4645 0elnn 4715 acexmidlemph 6006 nntri3or 6656 swoord1 6726 swoord2 6727 exmidaclem 7413 exmidontri2or 7451 addlocprlem 7745 nqprloc 7755 apreap 8757 zletric 9513 zlelttric 9514 zmulcl 9523 zdceq 9545 zdcle 9546 zdclt 9547 nn0lt2 9551 elnn1uz2 9831 mnflt 10008 mnfltpnf 10010 xrltso 10021 fzdcel 10265 fzm1 10325 qletric 10491 qlelttric 10492 qdceq 10494 qdclt 10495 qsqeqor 10902 zzlesq 10960 nn0o1gt2 12456 prm23lt5 12826 gausslemma2dlem0f 15773 umgrupgr 15953 umgrislfupgrenlem 15969 usgruspgr 16022 bj-fadc 16286 decidin 16329 triap 16569 tridceq 16596 |
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