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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 3409 | . . . . 5 | |
2 | 1 | imaeq2d 4688 | . . . 4 |
3 | 2 | eleq2d 2148 | . . 3 |
4 | opeq1 3570 | . . . 4 | |
5 | 4 | eleq1d 2147 | . . 3 |
6 | 3, 5 | bibi12d 233 | . 2 |
7 | eleq1 2141 | . . 3 | |
8 | opeq2 3571 | . . . 4 | |
9 | 8 | eleq1d 2147 | . . 3 |
10 | 7, 9 | bibi12d 233 | . 2 |
11 | vex 2604 | . . 3 | |
12 | vex 2604 | . . 3 | |
13 | 11, 12 | elimasn 4712 | . 2 |
14 | 6, 10, 13 | vtocl2g 2662 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 102 wb 103 wceq 1284 wcel 1433 csn 3398 cop 3401 cima 4366 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-14 1445 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-sep 3896 ax-pow 3948 ax-pr 3964 |
This theorem depends on definitions: df-bi 115 df-3an 921 df-tru 1287 df-nf 1390 df-sb 1686 df-eu 1944 df-mo 1945 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ral 2353 df-rex 2354 df-v 2603 df-sbc 2816 df-un 2977 df-in 2979 df-ss 2986 df-pw 3384 df-sn 3404 df-pr 3405 df-op 3407 df-br 3786 df-opab 3840 df-xp 4369 df-cnv 4371 df-dm 4373 df-rn 4374 df-res 4375 df-ima 4376 |
This theorem is referenced by: eliniseg 4715 inimasn 4761 dffv3g 5194 fvimacnv 5303 funfvima3 5413 elecg 6167 |
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