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| Mirrors > Home > MPE Home > Th. List > Mathboxes > socnv | Structured version Visualization version GIF version | ||
| Description: The converse of a strict ordering is still a strict ordering. (Contributed by Scott Fenton, 13-Jun-2018.) |
| Ref | Expression |
|---|---|
| socnv | ⊢ (𝑅 Or 𝐴 → ◡𝑅 Or 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnvso 6286 | . 2 ⊢ (𝑅 Or 𝐴 ↔ ◡𝑅 Or 𝐴) | |
| 2 | 1 | biimpi 219 | 1 ⊢ (𝑅 Or 𝐴 → ◡𝑅 Or 𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 Or wor 5562 ◡ccnv 5654 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-pr 5398 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-clab 2739 df-cleq 2752 df-clel 2835 df-ne 2956 df-ral 3077 df-rab 3413 df-v 3452 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-br 5104 df-opab 5168 df-po 5563 df-so 5564 df-cnv 5663 |
| This theorem is used by: (None) |
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