| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > funinsn | Unicode version | ||
| Description: A function based on the
singleton of an ordered pair. Unlike funsng 5404,
this holds even if |
| Ref | Expression |
|---|---|
| funinsn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | inss2 3444 |
. . . 4
| |
| 2 | xpss 4860 |
. . . 4
| |
| 3 | 1, 2 | sstri 3249 |
. . 3
|
| 4 | df-rel 4758 |
. . 3
| |
| 5 | 3, 4 | mpbir 146 |
. 2
|
| 6 | elin 3404 |
. . . . . . . . 9
| |
| 7 | 6 | simplbi 274 |
. . . . . . . 8
|
| 8 | elsni 3709 |
. . . . . . . 8
| |
| 9 | 7, 8 | syl 14 |
. . . . . . 7
|
| 10 | vex 2818 |
. . . . . . . 8
| |
| 11 | vex 2818 |
. . . . . . . 8
| |
| 12 | 10, 11 | opth 4355 |
. . . . . . 7
|
| 13 | 9, 12 | sylib 122 |
. . . . . 6
|
| 14 | 13 | simprd 114 |
. . . . 5
|
| 15 | elin 3404 |
. . . . . . . . 9
| |
| 16 | 15 | simplbi 274 |
. . . . . . . 8
|
| 17 | elsni 3709 |
. . . . . . . 8
| |
| 18 | 16, 17 | syl 14 |
. . . . . . 7
|
| 19 | vex 2818 |
. . . . . . . 8
| |
| 20 | 10, 19 | opth 4355 |
. . . . . . 7
|
| 21 | 18, 20 | sylib 122 |
. . . . . 6
|
| 22 | 21 | simprd 114 |
. . . . 5
|
| 23 | eqtr3 2254 |
. . . . 5
| |
| 24 | 14, 22, 23 | syl2an 289 |
. . . 4
|
| 25 | 24 | gen2 1499 |
. . 3
|
| 26 | 25 | ax-gen 1498 |
. 2
|
| 27 | dffun4 5365 |
. 2
| |
| 28 | 5, 26, 27 | mpbir2an 951 |
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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2208 ax-ext 2216 ax-sep 4230 ax-pow 4289 ax-pr 4324 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-v 2817 df-un 3217 df-in 3219 df-ss 3226 df-pw 3673 df-sn 3697 df-pr 3698 df-op 3700 df-br 4112 df-opab 4174 df-id 4416 df-xp 4757 df-rel 4758 df-cnv 4759 df-co 4760 df-fun 5356 |
| This theorem is referenced by: (None) |
| Copyright terms: Public domain | W3C validator |