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| Mirrors > Home > ILE Home > Th. List > riotacl | GIF version | ||
| Description: Closure of restricted iota. (Contributed by NM, 21-Aug-2011.) |
| Ref | Expression |
|---|---|
| riotacl | ⊢ (∃!𝑥 ∈ 𝐴 𝜑 → (℩𝑥 ∈ 𝐴 𝜑) ∈ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssrab2 3268 | . 2 ⊢ {𝑥 ∈ 𝐴 ∣ 𝜑} ⊆ 𝐴 | |
| 2 | riotacl2 5891 | . 2 ⊢ (∃!𝑥 ∈ 𝐴 𝜑 → (℩𝑥 ∈ 𝐴 𝜑) ∈ {𝑥 ∈ 𝐴 ∣ 𝜑}) | |
| 3 | 1, 2 | sselid 3181 | 1 ⊢ (∃!𝑥 ∈ 𝐴 𝜑 → (℩𝑥 ∈ 𝐴 𝜑) ∈ 𝐴) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2167 ∃!wreu 2477 {crab 2479 ℩crio 5876 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-ext 2178 |
| This theorem depends on definitions: df-bi 117 df-tru 1367 df-nf 1475 df-sb 1777 df-eu 2048 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-rex 2481 df-reu 2482 df-rab 2484 df-v 2765 df-sbc 2990 df-un 3161 df-in 3163 df-ss 3170 df-sn 3628 df-pr 3629 df-uni 3840 df-iota 5219 df-riota 5877 |
| This theorem is referenced by: riotaprop 5901 riotass2 5904 riotass 5905 acexmidlemcase 5917 supclti 7064 caucvgsrlemcl 7856 caucvgsrlemgt1 7862 axcaucvglemcl 7962 subval 8218 subcl 8225 divvalap 8701 divclap 8705 lbcl 8973 divfnzn 9695 flqcl 10363 flapcl 10365 cjval 11010 cjth 11011 cjf 11012 oddpwdclemodd 12340 oddpwdclemdc 12341 oddpwdc 12342 qnumdencl 12355 qnumdenbi 12360 ismgmid 13020 grpinvf 13179 |
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