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| Mirrors > Home > MPE Home > Th. List > 2thd | Structured version Visualization version GIF version | ||
| Description: Two truths are equivalent. Deduction form. (Contributed by NM, 3-Jun-2012.) |
| Ref | Expression |
|---|---|
| 2thd.1 | ⊢ (𝜑 → 𝜓) |
| 2thd.2 | ⊢ (𝜑 → 𝜒) |
| Ref | Expression |
|---|---|
| 2thd | ⊢ (𝜑 → (𝜓 ↔ 𝜒)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2thd.1 | . 2 ⊢ (𝜑 → 𝜓) | |
| 2 | 2thd.2 | . 2 ⊢ (𝜑 → 𝜒) | |
| 3 | pm5.1im 263 | . 2 ⊢ (𝜓 → (𝜒 → (𝜓 ↔ 𝜒))) | |
| 4 | 1, 2, 3 | sylc 65 | 1 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 |
| 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 207 |
| This theorem is referenced by: 2falsed 376 biort 936 vtocl2d 3508 rspcime 3570 sbc2or 3738 disjprg 5082 euotd 5461 posn 5710 frsn 5712 cnvpo 6245 elabrex 7190 elabrexg 7191 riota5f 7345 smoord 8298 brwdom2 9481 finacn 9963 acacni 10054 dfac13 10056 fin1a2lem10 10322 gch2 10589 gchac 10595 recmulnq 10878 nn1m1nn 12186 nn0sub 12478 xnn0n0n1ge2b 13074 qextltlem 13145 xnn0lem1lt 13187 xsubge0 13204 xlesubadd 13206 iccshftr 13430 iccshftl 13432 iccdil 13434 icccntr 13436 fzaddel 13503 elfzomelpfzo 13718 sqlecan 14162 nnesq 14180 hashdom 14332 swrdspsleq 14619 repswsymballbi 14733 m1exp1 16336 bitsmod 16396 dvdssq 16527 pcdvdsb 16831 vdwmc2 16941 acsfn 17616 subsubc 17811 funcres2b 17855 isipodrs 18494 issubg3 19111 sdrgacs 20769 lmhmlvec 21097 opnnei 23095 lmss 23273 lmres 23275 cmpfi 23383 xkopt 23630 acufl 23892 lmhmclm 25064 equivcmet 25294 degltlem1 26047 mdegle0 26052 cxple2 26674 rlimcnp3 26944 dchrelbas3 27215 tgcolg 28636 hlbtwn 28693 eupth2lem3lem6 30318 ifnebib 32634 isoun 32790 subsdrg 33374 unitprodclb 33464 smatrcl 33956 msrrcl 35741 fz0n 35929 onint1 36647 bj-animbi 36839 bj-nfcsym 37222 matunitlindf 37953 ftc1anclem6 38033 lcvexchlem1 39494 ltrnatb 40597 cdlemg27b 41156 dvdsexpnn0 42780 fsuppind 43037 gicabl 43545 dfacbasgrp 43554 rp-fakeimass 43957 or3or 44468 radcnvrat 44759 eliooshift 45954 ellimcabssub0 46065 resccat 49561 |
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