| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > pw1nel3 | Unicode version | ||
| Description: Negated excluded middle
implies that the power set of |
| Ref | Expression |
|---|---|
| pw1nel3 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pw1ne0 7587 |
. . . . 5
| |
| 2 | pw1ne1 7588 |
. . . . 5
| |
| 3 | 1, 2 | nelpri 3733 |
. . . 4
|
| 4 | 3 | a1i 9 |
. . 3
|
| 5 | df2o3 6702 |
. . . 4
| |
| 6 | 5 | eleq2i 2305 |
. . 3
|
| 7 | 4, 6 | sylnibr 688 |
. 2
|
| 8 | exmidpweq 7216 |
. . . 4
| |
| 9 | 8 | notbii 678 |
. . 3
|
| 10 | 1oex 6695 |
. . . . . 6
| |
| 11 | 10 | pwex 4320 |
. . . . 5
|
| 12 | 11 | elsn 3725 |
. . . 4
|
| 13 | 12 | notbii 678 |
. . 3
|
| 14 | 9, 13 | sylbb2 138 |
. 2
|
| 15 | df-3o 6689 |
. . . . . . 7
| |
| 16 | df-suc 4516 |
. . . . . . 7
| |
| 17 | 15, 16 | eqtri 2259 |
. . . . . 6
|
| 18 | 17 | eleq2i 2305 |
. . . . 5
|
| 19 | elun 3370 |
. . . . 5
| |
| 20 | 18, 19 | bitri 184 |
. . . 4
|
| 21 | 20 | notbii 678 |
. . 3
|
| 22 | ioran 764 |
. . 3
| |
| 23 | 21, 22 | bitri 184 |
. 2
|
| 24 | 7, 14, 23 | sylanbrc 421 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 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 4249 ax-nul 4259 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 |
| This proof depends on definitions: df-bi 117 df-dc 847 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-v 2823 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3690 df-sn 3715 df-pr 3716 df-uni 3936 df-tr 4230 df-exmid 4332 df-iord 4511 df-on 4513 df-suc 4516 df-1o 6687 df-2o 6688 df-3o 6689 |
| This theorem is used by: sucpw1ne3 7591 sucpw1nss3 7594 |
| Copyright terms: Public domain | W3C validator |