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Mirrors > Home > MPE Home > Th. List > Mathboxes > sigaex | Structured version Visualization version Unicode version |
Description: Lemma for issiga 30174 and isrnsiga 30176. The class of sigma-algebras with base set is a set. Note: a more generic version with could be useful for sigaval 30173. (Contributed by Thierry Arnoux, 24-Oct-2016.) |
Ref | Expression |
---|---|
sigaex |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-rab 2921 | . . 3 | |
2 | selpw 4165 | . . . . 5 | |
3 | 2 | anbi1i 731 | . . . 4 |
4 | 3 | abbii 2739 | . . 3 |
5 | 1, 4 | eqtri 2644 | . 2 |
6 | vex 3203 | . . . 4 | |
7 | pwexg 4850 | . . . 4 | |
8 | pwexg 4850 | . . . 4 | |
9 | 6, 7, 8 | mp2b 10 | . . 3 |
10 | 9 | rabex 4813 | . 2 |
11 | 5, 10 | eqeltrri 2698 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wa 384 w3a 1037 wcel 1990 cab 2608 wral 2912 crab 2916 cvv 3200 cdif 3571 wss 3574 cpw 4158 cuni 4436 class class class wbr 4653 com 7065 cdom 7953 |
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 ax-sep 4781 ax-pow 4843 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-rab 2921 df-v 3202 df-in 3581 df-ss 3588 df-pw 4160 |
This theorem is referenced by: issiga 30174 isrnsiga 30176 |
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