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Mirrors > Home > MPE Home > Th. List > csbun | Structured version Visualization version Unicode version |
Description: Distribution of class substitution over union of two classes. (Contributed by Drahflow, 23-Sep-2015.) (Revised by Mario Carneiro, 11-Dec-2016.) (Revised by NM, 13-Sep-2018.) |
Ref | Expression |
---|---|
csbun |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | csbeq1 3536 | . . . 4 | |
2 | csbeq1 3536 | . . . . 5 | |
3 | csbeq1 3536 | . . . . 5 | |
4 | 2, 3 | uneq12d 3768 | . . . 4 |
5 | 1, 4 | eqeq12d 2637 | . . 3 |
6 | vex 3203 | . . . 4 | |
7 | nfcsb1v 3549 | . . . . 5 | |
8 | nfcsb1v 3549 | . . . . 5 | |
9 | 7, 8 | nfun 3769 | . . . 4 |
10 | csbeq1a 3542 | . . . . 5 | |
11 | csbeq1a 3542 | . . . . 5 | |
12 | 10, 11 | uneq12d 3768 | . . . 4 |
13 | 6, 9, 12 | csbief 3558 | . . 3 |
14 | 5, 13 | vtoclg 3266 | . 2 |
15 | un0 3967 | . . . 4 | |
16 | 15 | a1i 11 | . . 3 |
17 | csbprc 3980 | . . . 4 | |
18 | csbprc 3980 | . . . 4 | |
19 | 17, 18 | uneq12d 3768 | . . 3 |
20 | csbprc 3980 | . . 3 | |
21 | 16, 19, 20 | 3eqtr4rd 2667 | . 2 |
22 | 14, 21 | pm2.61i 176 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wceq 1483 wcel 1990 cvv 3200 csb 3533 cun 3572 c0 3915 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-fal 1489 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-nul 3916 |
This theorem is referenced by: csbprg 4244 |
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