Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > df-salg | Structured version Visualization version Unicode version |
Description: Define the class of sigma-algebras. (Contributed by Glauco Siliprandi, 17-Aug-2020.) |
Ref | Expression |
---|---|
df-salg | SAlg |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | csalg 40528 | . 2 SAlg | |
2 | c0 3915 | . . . . 5 | |
3 | vx | . . . . . 6 | |
4 | 3 | cv 1482 | . . . . 5 |
5 | 2, 4 | wcel 1990 | . . . 4 |
6 | 4 | cuni 4436 | . . . . . . 7 |
7 | vy | . . . . . . . 8 | |
8 | 7 | cv 1482 | . . . . . . 7 |
9 | 6, 8 | cdif 3571 | . . . . . 6 |
10 | 9, 4 | wcel 1990 | . . . . 5 |
11 | 10, 7, 4 | wral 2912 | . . . 4 |
12 | com 7065 | . . . . . . 7 | |
13 | cdom 7953 | . . . . . . 7 | |
14 | 8, 12, 13 | wbr 4653 | . . . . . 6 |
15 | 8 | cuni 4436 | . . . . . . 7 |
16 | 15, 4 | wcel 1990 | . . . . . 6 |
17 | 14, 16 | wi 4 | . . . . 5 |
18 | 4 | cpw 4158 | . . . . 5 |
19 | 17, 7, 18 | wral 2912 | . . . 4 |
20 | 5, 11, 19 | w3a 1037 | . . 3 |
21 | 20, 3 | cab 2608 | . 2 |
22 | 1, 21 | wceq 1483 | 1 SAlg |
Colors of variables: wff setvar class |
This definition is referenced by: issal 40534 |
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