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| Mirrors > Home > ILE Home > Th. List > papeq1 | Unicode version | ||
| Description: Equality theorem for apartness predicate. (Contributed by Jim Kingdon, 3-Jun-2026.) |
| Ref | Expression |
|---|---|
| papeq1 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sseq1 3263 |
. . . 4
| |
| 2 | breq 4113 |
. . . . . 6
| |
| 3 | 2 | notbid 673 |
. . . . 5
|
| 4 | 3 | ralbidv 2544 |
. . . 4
|
| 5 | 1, 4 | anbi12d 473 |
. . 3
|
| 6 | breq 4113 |
. . . . . 6
| |
| 7 | breq 4113 |
. . . . . 6
| |
| 8 | 6, 7 | imbi12d 234 |
. . . . 5
|
| 9 | 8 | 2ralbidv 2568 |
. . . 4
|
| 10 | breq 4113 |
. . . . . . . 8
| |
| 11 | breq 4113 |
. . . . . . . 8
| |
| 12 | 10, 11 | orbi12d 801 |
. . . . . . 7
|
| 13 | 6, 12 | imbi12d 234 |
. . . . . 6
|
| 14 | 13 | ralbidv 2544 |
. . . . 5
|
| 15 | 14 | 2ralbidv 2568 |
. . . 4
|
| 16 | 9, 15 | anbi12d 473 |
. . 3
|
| 17 | 5, 16 | anbi12d 473 |
. 2
|
| 18 | df-pap 7561 |
. 2
| |
| 19 | df-pap 7561 |
. 2
| |
| 20 | 17, 18, 19 | 3bitr4g 223 |
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-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-11 1555 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2216 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-ral 2527 df-in 3219 df-ss 3226 df-br 4112 df-pap 7561 |
| This theorem is referenced by: (None) |
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