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Mirrors > Home > MPE Home > Th. List > Mathboxes > soeq12d | Structured version Visualization version GIF version |
Description: Equality deduction for total orderings. (Contributed by Stefan O'Rear, 19-Jan-2015.) |
Ref | Expression |
---|---|
weeq12d.l | ⊢ (𝜑 → 𝑅 = 𝑆) |
weeq12d.r | ⊢ (𝜑 → 𝐴 = 𝐵) |
Ref | Expression |
---|---|
soeq12d | ⊢ (𝜑 → (𝑅 Or 𝐴 ↔ 𝑆 Or 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | weeq12d.l | . . 3 ⊢ (𝜑 → 𝑅 = 𝑆) | |
2 | soeq1 5494 | . . 3 ⊢ (𝑅 = 𝑆 → (𝑅 Or 𝐴 ↔ 𝑆 Or 𝐴)) | |
3 | 1, 2 | syl 17 | . 2 ⊢ (𝜑 → (𝑅 Or 𝐴 ↔ 𝑆 Or 𝐴)) |
4 | weeq12d.r | . . 3 ⊢ (𝜑 → 𝐴 = 𝐵) | |
5 | soeq2 5495 | . . 3 ⊢ (𝐴 = 𝐵 → (𝑆 Or 𝐴 ↔ 𝑆 Or 𝐵)) | |
6 | 4, 5 | syl 17 | . 2 ⊢ (𝜑 → (𝑆 Or 𝐴 ↔ 𝑆 Or 𝐵)) |
7 | 3, 6 | bitrd 281 | 1 ⊢ (𝜑 → (𝑅 Or 𝐴 ↔ 𝑆 Or 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 208 = wceq 1537 Or wor 5473 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2800 df-cleq 2814 df-clel 2893 df-ral 3143 df-in 3943 df-ss 3952 df-br 5067 df-po 5474 df-so 5475 |
This theorem is referenced by: (None) |
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