Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > issald | Structured version Visualization version Unicode version |
Description: Sufficient condition to prove that is sigma-algebra. (Contributed by Glauco Siliprandi, 3-Jan-2021.) |
Ref | Expression |
---|---|
issald.s | |
issald.z | |
issald.x | |
issald.d | |
issald.u |
Ref | Expression |
---|---|
issald | SAlg |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | issald.z | . 2 | |
2 | issald.x | . . . . . 6 | |
3 | 2 | eqcomi 2631 | . . . . 5 |
4 | 3 | difeq1i 3724 | . . . 4 |
5 | issald.d | . . . 4 | |
6 | 4, 5 | syl5eqel 2705 | . . 3 |
7 | 6 | ralrimiva 2966 | . 2 |
8 | issald.u | . . . 4 | |
9 | 8 | 3expia 1267 | . . 3 |
10 | 9 | ralrimiva 2966 | . 2 |
11 | issald.s | . . 3 | |
12 | issal 40534 | . . 3 SAlg | |
13 | 11, 12 | syl 17 | . 2 SAlg |
14 | 1, 7, 10, 13 | mpbir3and 1245 | 1 SAlg |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wa 384 w3a 1037 wceq 1483 wcel 1990 wral 2912 cdif 3571 c0 3915 cpw 4158 cuni 4436 class class class wbr 4653 com 7065 cdom 7953 SAlgcsalg 40528 |
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-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-dif 3577 df-in 3581 df-ss 3588 df-pw 4160 df-uni 4437 df-salg 40529 |
This theorem is referenced by: salexct 40552 issalnnd 40563 |
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