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| Mirrors > Home > ILE Home > Th. List > f1osng | Unicode version | ||
| Description: A singleton of an ordered pair is one-to-one onto function. (Contributed by Mario Carneiro, 12-Jan-2013.) |
| Ref | Expression |
|---|---|
| f1osng |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sneq 3716 |
. . . 4
| |
| 2 | f1oeq2 5623 |
. . . 4
| |
| 3 | 1, 2 | syl 14 |
. . 3
|
| 4 | opeq1 3899 |
. . . . 5
| |
| 5 | 4 | sneqd 3718 |
. . . 4
|
| 6 | f1oeq1 5622 |
. . . 4
| |
| 7 | 5, 6 | syl 14 |
. . 3
|
| 8 | 3, 7 | bitrd 188 |
. 2
|
| 9 | sneq 3716 |
. . . 4
| |
| 10 | f1oeq3 5624 |
. . . 4
| |
| 11 | 9, 10 | syl 14 |
. . 3
|
| 12 | opeq2 3900 |
. . . . 5
| |
| 13 | 12 | sneqd 3718 |
. . . 4
|
| 14 | f1oeq1 5622 |
. . . 4
| |
| 15 | 13, 14 | syl 14 |
. . 3
|
| 16 | 11, 15 | bitrd 188 |
. 2
|
| 17 | vex 2824 |
. . 3
| |
| 18 | vex 2824 |
. . 3
| |
| 19 | 17, 18 | f1osn 5676 |
. 2
|
| 20 | 8, 16, 19 | vtocl2g 2887 |
1
|
| 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 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4244 ax-pow 4306 ax-pr 4341 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-br 4126 df-opab 4188 df-id 4433 df-xp 4775 df-rel 4776 df-cnv 4777 df-co 4778 df-dm 4779 df-rn 4780 df-fun 5374 df-fn 5375 df-f 5376 df-f1 5377 df-fo 5378 df-f1o 5379 |
| This theorem is referenced by: f1sng 5678 f1oprg 5680 fsnunf 5906 suppsnopdc 6480 mapsnd 6960 dif1en 7173 1fv 10524 zfz1isolem1 11270 sumsnf 12154 prodsnf 12337 ennnfonelemhf1o 13282 gsumsncmn 14133 gsump1 14134 |
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