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Mirrors > Home > MPE Home > Th. List > axrep3 | Structured version Visualization version Unicode version |
Description: Axiom of Replacement slightly strengthened from axrep2 4773; may occur free in . (Contributed by NM, 2-Jan-1997.) |
Ref | Expression |
---|---|
axrep3 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfe1 2027 | . . . 4 | |
2 | nfv 1843 | . . . . . 6 | |
3 | nfv 1843 | . . . . . . . 8 | |
4 | nfa1 2028 | . . . . . . . 8 | |
5 | 3, 4 | nfan 1828 | . . . . . . 7 |
6 | 5 | nfex 2154 | . . . . . 6 |
7 | 2, 6 | nfbi 1833 | . . . . 5 |
8 | 7 | nfal 2153 | . . . 4 |
9 | 1, 8 | nfim 1825 | . . 3 |
10 | 9 | nfex 2154 | . 2 |
11 | elequ2 2004 | . . . . . . . 8 | |
12 | 11 | anbi1d 741 | . . . . . . 7 |
13 | 12 | exbidv 1850 | . . . . . 6 |
14 | 13 | bibi2d 332 | . . . . 5 |
15 | 14 | albidv 1849 | . . . 4 |
16 | 15 | imbi2d 330 | . . 3 |
17 | 16 | exbidv 1850 | . 2 |
18 | axrep2 4773 | . 2 | |
19 | 10, 17, 18 | chvar 2262 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wa 384 wal 1481 wex 1704 |
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-rep 4771 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 |
This theorem is referenced by: axrep4 4775 |
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