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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 3312 | . 2 ⊢ {𝑥 ∈ 𝐴 ∣ 𝜑} ⊆ 𝐴 | |
| 2 | riotacl2 5985 | . 2 ⊢ (∃!𝑥 ∈ 𝐴 𝜑 → (℩𝑥 ∈ 𝐴 𝜑) ∈ {𝑥 ∈ 𝐴 ∣ 𝜑}) | |
| 3 | 1, 2 | sselid 3225 | 1 ⊢ (∃!𝑥 ∈ 𝐴 𝜑 → (℩𝑥 ∈ 𝐴 𝜑) ∈ 𝐴) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2202 ∃!wreu 2512 {crab 2514 ℩crio 5969 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1400 df-nf 1509 df-sb 1811 df-eu 2082 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-rex 2516 df-reu 2517 df-rab 2519 df-v 2804 df-sbc 3032 df-un 3204 df-in 3206 df-ss 3213 df-sn 3675 df-pr 3676 df-uni 3894 df-iota 5286 df-riota 5970 |
| This theorem is referenced by: riotaeqimp 5995 riotaprop 5996 riotass2 5999 riotass 6000 acexmidlemcase 6012 supclti 7196 caucvgsrlemcl 8008 caucvgsrlemgt1 8014 axcaucvglemcl 8114 subval 8370 subcl 8377 divvalap 8853 divclap 8857 lbcl 9125 divfnzn 9854 flqcl 10532 flapcl 10534 cjval 11405 cjth 11406 cjf 11407 oddpwdclemodd 12743 oddpwdclemdc 12744 oddpwdc 12745 qnumdencl 12758 qnumdenbi 12763 ismgmid 13459 grpinvf 13629 uspgredg2vlem 16070 usgredg2vlem1 16072 |
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