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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 3587 | . . . 4 | |
2 | f1oeq2 5422 | . . . 4 | |
3 | 1, 2 | syl 14 | . . 3 |
4 | opeq1 3758 | . . . . 5 | |
5 | 4 | sneqd 3589 | . . . 4 |
6 | f1oeq1 5421 | . . . 4 | |
7 | 5, 6 | syl 14 | . . 3 |
8 | 3, 7 | bitrd 187 | . 2 |
9 | sneq 3587 | . . . 4 | |
10 | f1oeq3 5423 | . . . 4 | |
11 | 9, 10 | syl 14 | . . 3 |
12 | opeq2 3759 | . . . . 5 | |
13 | 12 | sneqd 3589 | . . . 4 |
14 | f1oeq1 5421 | . . . 4 | |
15 | 13, 14 | syl 14 | . . 3 |
16 | 11, 15 | bitrd 187 | . 2 |
17 | vex 2729 | . . 3 | |
18 | vex 2729 | . . 3 | |
19 | 17, 18 | f1osn 5472 | . 2 |
20 | 8, 16, 19 | vtocl2g 2790 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wb 104 wceq 1343 wcel 2136 csn 3576 cop 3579 wf1o 5187 |
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 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-14 2139 ax-ext 2147 ax-sep 4100 ax-pow 4153 ax-pr 4187 |
This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ral 2449 df-rex 2450 df-v 2728 df-un 3120 df-in 3122 df-ss 3129 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-br 3983 df-opab 4044 df-id 4271 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-rn 4615 df-fun 5190 df-fn 5191 df-f 5192 df-f1 5193 df-fo 5194 df-f1o 5195 |
This theorem is referenced by: f1sng 5474 f1oprg 5476 fsnunf 5685 dif1en 6845 1fv 10074 zfz1isolem1 10753 sumsnf 11350 prodsnf 11533 ennnfonelemhf1o 12346 |
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