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| Mirrors > Home > MPE Home > Th. List > ricrel | Structured version Visualization version GIF version | ||
| Description: The domain of the ring isomorphism relation is a relation. (Contributed by AV, 24-Jul-2026.) |
| Ref | Expression |
|---|---|
| ricrel | ⊢ Rel ≃𝑟 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-ric 20794 | . . 3 ⊢ ≃𝑟 = (◡ RingIso “ (V ∖ 1o)) | |
| 2 | cnvimass 6217 | . . . 4 ⊢ (◡ RingIso “ (V ∖ 1o)) ⊆ dom RingIso | |
| 3 | rimfn 20788 | . . . . 5 ⊢ RingIso Fn (V × V) | |
| 4 | 3 | fndmi 6673 | . . . 4 ⊢ dom RingIso = (V × V) |
| 5 | 2, 4 | sseqtri 3961 | . . 3 ⊢ (◡ RingIso “ (V ∖ 1o)) ⊆ (V × V) |
| 6 | 1, 5 | eqsstri 3959 | . 2 ⊢ ≃𝑟 ⊆ (V × V) |
| 7 | relxp 5676 | . 2 ⊢ Rel (V × V) | |
| 8 | relss 5766 | . 2 ⊢ ( ≃𝑟 ⊆ (V × V) → (Rel (V × V) → Rel ≃𝑟 )) | |
| 9 | 6, 7, 8 | mp2 9 | 1 ⊢ Rel ≃𝑟 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: Vcvv 3454 ⊆ wss 3900 ∖ cdif 4048 × cxp 5656 ◡ccnv 5657 dom cdm 5658 “ cima 5661 Rel wrel 5663 1oc1o 8507 RingIso crs 20751 ≃𝑟 cric 20752 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pr 5398 ax-un 7783 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-iun 4958 df-br 5109 df-opab 5174 df-mpt 5193 df-id 5553 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-fv 6574 df-ov 7454 df-oprab 7455 df-mpo 7456 df-1st 8035 df-2nd 8036 df-rim 20754 df-ric 20794 |
| This theorem is used by: ricer 20807 dfric2 20808 |
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