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| Mirrors > Home > ILE Home > Th. List > funinsn | Unicode version | ||
| Description: A function based on the
singleton of an ordered pair. Unlike funsng 5376,
this holds even if |
| Ref | Expression |
|---|---|
| funinsn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | inss2 3428 |
. . . 4
| |
| 2 | xpss 4834 |
. . . 4
| |
| 3 | 1, 2 | sstri 3236 |
. . 3
|
| 4 | df-rel 4732 |
. . 3
| |
| 5 | 3, 4 | mpbir 146 |
. 2
|
| 6 | elin 3390 |
. . . . . . . . 9
| |
| 7 | 6 | simplbi 274 |
. . . . . . . 8
|
| 8 | elsni 3687 |
. . . . . . . 8
| |
| 9 | 7, 8 | syl 14 |
. . . . . . 7
|
| 10 | vex 2805 |
. . . . . . . 8
| |
| 11 | vex 2805 |
. . . . . . . 8
| |
| 12 | 10, 11 | opth 4329 |
. . . . . . 7
|
| 13 | 9, 12 | sylib 122 |
. . . . . 6
|
| 14 | 13 | simprd 114 |
. . . . 5
|
| 15 | elin 3390 |
. . . . . . . . 9
| |
| 16 | 15 | simplbi 274 |
. . . . . . . 8
|
| 17 | elsni 3687 |
. . . . . . . 8
| |
| 18 | 16, 17 | syl 14 |
. . . . . . 7
|
| 19 | vex 2805 |
. . . . . . . 8
| |
| 20 | 10, 19 | opth 4329 |
. . . . . . 7
|
| 21 | 18, 20 | sylib 122 |
. . . . . 6
|
| 22 | 21 | simprd 114 |
. . . . 5
|
| 23 | eqtr3 2251 |
. . . . 5
| |
| 24 | 14, 22, 23 | syl2an 289 |
. . . 4
|
| 25 | 24 | gen2 1498 |
. . 3
|
| 26 | 25 | ax-gen 1497 |
. 2
|
| 27 | dffun4 5337 |
. 2
| |
| 28 | 5, 26, 27 | mpbir2an 950 |
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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-v 2804 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-br 4089 df-opab 4151 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-fun 5328 |
| This theorem is referenced by: (None) |
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