Mathbox for Wolf Lammen |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > wl-nfeqfb | Structured version Visualization version Unicode version |
Description: Extend nfeqf 2301 to an equivalence. (Contributed by Wolf Lammen, 31-Jul-2019.) |
Ref | Expression |
---|---|
wl-nfeqfb |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nf5r 2064 | . . . . 5 | |
2 | 1 | imp 445 | . . . 4 |
3 | wl-aleq 33322 | . . . . 5 | |
4 | 3 | simprbi 480 | . . . 4 |
5 | 2, 4 | syl 17 | . . 3 |
6 | nfnt 1782 | . . . . . 6 | |
7 | 6 | nf5rd 2066 | . . . . 5 |
8 | 7 | imp 445 | . . . 4 |
9 | alnex 1706 | . . . . . 6 | |
10 | wl-exeq 33321 | . . . . . 6 | |
11 | 9, 10 | xchbinx 324 | . . . . 5 |
12 | 3ioran 1056 | . . . . 5 | |
13 | 11, 12 | sylbb 209 | . . . 4 |
14 | 3simpc 1060 | . . . 4 | |
15 | pm5.21 903 | . . . 4 | |
16 | 8, 13, 14, 15 | 4syl 19 | . . 3 |
17 | 5, 16 | pm2.61dan 832 | . 2 |
18 | ax7 1943 | . . . . 5 | |
19 | 18 | al2imi 1743 | . . . 4 |
20 | nftht 1718 | . . . 4 | |
21 | 19, 20 | syl6 35 | . . 3 |
22 | nfeqf 2301 | . . . 4 | |
23 | 22 | ex 450 | . . 3 |
24 | 21, 23 | bija 370 | . 2 |
25 | 17, 24 | impbii 199 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wb 196 wa 384 w3o 1036 w3a 1037 wal 1481 wex 1704 wnf 1708 |
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-10 2019 ax-12 2047 ax-13 2246 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 |
This theorem is referenced by: (None) |
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