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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sneq 3618 |
. . . . 5
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2 | 1 | imaeq2d 4985 |
. . . 4
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3 | 2 | eleq2d 2259 |
. . 3
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4 | opeq1 3793 |
. . . 4
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5 | 4 | eleq1d 2258 |
. . 3
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6 | 3, 5 | bibi12d 235 |
. 2
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7 | eleq1 2252 |
. . 3
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8 | opeq2 3794 |
. . . 4
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9 | 8 | eleq1d 2258 |
. . 3
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10 | 7, 9 | bibi12d 235 |
. 2
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11 | vex 2755 |
. . 3
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12 | vex 2755 |
. . 3
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13 | 11, 12 | elimasn 5010 |
. 2
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14 | 6, 10, 13 | vtocl2g 2816 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-14 2163 ax-ext 2171 ax-sep 4136 ax-pow 4189 ax-pr 4224 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1472 df-sb 1774 df-eu 2041 df-mo 2042 df-clab 2176 df-cleq 2182 df-clel 2185 df-nfc 2321 df-ral 2473 df-rex 2474 df-v 2754 df-sbc 2978 df-un 3148 df-in 3150 df-ss 3157 df-pw 3592 df-sn 3613 df-pr 3614 df-op 3616 df-br 4019 df-opab 4080 df-xp 4647 df-cnv 4649 df-dm 4651 df-rn 4652 df-res 4653 df-ima 4654 |
This theorem is referenced by: eliniseg 5013 inimasn 5061 dffv3g 5526 fvimacnv 5647 funfvima3 5766 elecg 6591 imasnopn 14196 |
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