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Mirrors > Home > ILE Home > Th. List > elimasng | Unicode version |
Description: Membership in an image of a singleton. (Contributed by Raph Levien, 21-Oct-2006.) |
Ref | Expression |
---|---|
elimasng |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sneq 3538 | . . . . 5 | |
2 | 1 | imaeq2d 4881 | . . . 4 |
3 | 2 | eleq2d 2209 | . . 3 |
4 | opeq1 3705 | . . . 4 | |
5 | 4 | eleq1d 2208 | . . 3 |
6 | 3, 5 | bibi12d 234 | . 2 |
7 | eleq1 2202 | . . 3 | |
8 | opeq2 3706 | . . . 4 | |
9 | 8 | eleq1d 2208 | . . 3 |
10 | 7, 9 | bibi12d 234 | . 2 |
11 | vex 2689 | . . 3 | |
12 | vex 2689 | . . 3 | |
13 | 11, 12 | elimasn 4906 | . 2 |
14 | 6, 10, 13 | vtocl2g 2750 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wb 104 wceq 1331 wcel 1480 csn 3527 cop 3530 cima 4542 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-sep 4046 ax-pow 4098 ax-pr 4131 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-eu 2002 df-mo 2003 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-ral 2421 df-rex 2422 df-v 2688 df-sbc 2910 df-un 3075 df-in 3077 df-ss 3084 df-pw 3512 df-sn 3533 df-pr 3534 df-op 3536 df-br 3930 df-opab 3990 df-xp 4545 df-cnv 4547 df-dm 4549 df-rn 4550 df-res 4551 df-ima 4552 |
This theorem is referenced by: eliniseg 4909 inimasn 4956 dffv3g 5417 fvimacnv 5535 funfvima3 5651 elecg 6467 imasnopn 12468 |
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