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Mirrors > Home > ILE Home > Th. List > notab | Unicode version |
Description: A class builder defined by a negation. (Contributed by FL, 18-Sep-2010.) |
Ref | Expression |
---|---|
notab |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-rab 2315 | . . 3 | |
2 | rabab 2575 | . . 3 | |
3 | 1, 2 | eqtr3i 2062 | . 2 |
4 | difab 3206 | . . 3 | |
5 | abid2 2158 | . . . 4 | |
6 | 5 | difeq1i 3058 | . . 3 |
7 | 4, 6 | eqtr3i 2062 | . 2 |
8 | 3, 7 | eqtr3i 2062 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wa 97 wceq 1243 wcel 1393 cab 2026 crab 2310 cvv 2557 cdif 2914 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-in1 544 ax-in2 545 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 |
This theorem depends on definitions: df-bi 110 df-tru 1246 df-fal 1249 df-nf 1350 df-sb 1646 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-rab 2315 df-v 2559 df-dif 2920 |
This theorem is referenced by: dfif3 3343 |
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