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Mirrors > Home > MPE Home > Th. List > Mathboxes > idsymrel | Structured version Visualization version GIF version |
Description: The identity relation is symmetric. (Contributed by AV, 19-Jun-2022.) |
Ref | Expression |
---|---|
idsymrel | ⊢ SymRel I |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cnvi 6034 | . 2 ⊢ ◡ I = I | |
2 | reli 5725 | . 2 ⊢ Rel I | |
3 | dfsymrel4 36592 | . 2 ⊢ ( SymRel I ↔ (◡ I = I ∧ Rel I )) | |
4 | 1, 2, 3 | mpbir2an 707 | 1 ⊢ SymRel I |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1539 I cid 5479 ◡ccnv 5579 Rel wrel 5585 SymRel wsymrel 36272 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pr 5347 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-clab 2716 df-cleq 2730 df-clel 2817 df-ral 3068 df-rex 3069 df-rab 3072 df-v 3424 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-sn 4559 df-pr 4561 df-op 4565 df-br 5071 df-opab 5133 df-id 5480 df-xp 5586 df-rel 5587 df-cnv 5588 df-dm 5590 df-rn 5591 df-res 5592 df-symrel 36585 |
This theorem is referenced by: (None) |
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