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Mirrors > Home > MPE Home > Th. List > rabsnt | Structured version Visualization version Unicode version |
Description: Truth implied by equality of a restricted class abstraction and a singleton. (Contributed by NM, 29-May-2006.) (Proof shortened by Mario Carneiro, 23-Dec-2016.) |
Ref | Expression |
---|---|
rabsnt.1 | |
rabsnt.2 |
Ref | Expression |
---|---|
rabsnt |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rabsnt.1 | . . . 4 | |
2 | 1 | snid 4208 | . . 3 |
3 | id 22 | . . 3 | |
4 | 2, 3 | syl5eleqr 2708 | . 2 |
5 | rabsnt.2 | . . . 4 | |
6 | 5 | elrab 3363 | . . 3 |
7 | 6 | simprbi 480 | . 2 |
8 | 4, 7 | syl 17 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wceq 1483 wcel 1990 crab 2916 cvv 3200 csn 4177 |
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-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-sn 4178 |
This theorem is referenced by: ddemeas 30299 |
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