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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 6191 | . 2 ⊢ (𝑅 Or 𝐴 ↔ ◡𝑅 Or 𝐴) | |
2 | 1 | biimpi 215 | 1 ⊢ (𝑅 Or 𝐴 → ◡𝑅 Or 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 Or wor 5502 ◡ccnv 5588 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pr 5352 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-clab 2716 df-cleq 2730 df-clel 2816 df-ne 2944 df-ral 3069 df-rab 3073 df-v 3434 df-dif 3890 df-un 3892 df-nul 4257 df-if 4460 df-sn 4562 df-pr 4564 df-op 4568 df-br 5075 df-opab 5137 df-po 5503 df-so 5504 df-cnv 5597 |
This theorem is referenced by: (None) |
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