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Mirrors > Home > MPE Home > Th. List > n0el | Structured version Visualization version Unicode version |
Description: Negated membership of the empty set in another class. (Contributed by Rodolfo Medina, 25-Sep-2010.) |
Ref | Expression |
---|---|
n0el |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-ral 2917 | . 2 | |
2 | df-ex 1705 | . . 3 | |
3 | 2 | ralbii 2980 | . 2 |
4 | alnex 1706 | . . 3 | |
5 | imnang 1769 | . . 3 | |
6 | 0el 3939 | . . . . 5 | |
7 | df-rex 2918 | . . . . 5 | |
8 | 6, 7 | bitri 264 | . . . 4 |
9 | 8 | notbii 310 | . . 3 |
10 | 4, 5, 9 | 3bitr4ri 293 | . 2 |
11 | 1, 3, 10 | 3bitr4ri 293 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wi 4 wb 196 wa 384 wal 1481 wex 1704 wcel 1990 wral 2912 wrex 2913 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-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-v 3202 df-dif 3577 df-nul 3916 |
This theorem is referenced by: n0el2 34103 prter2 34166 |
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