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Mirrors > Home > ILE Home > Th. List > eqreu | Unicode version |
Description: A condition which implies existential uniqueness. (Contributed by Mario Carneiro, 2-Oct-2015.) |
Ref | Expression |
---|---|
eqreu.1 |
Ref | Expression |
---|---|
eqreu |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ralbiim 2447 | . . . . 5 | |
2 | eqreu.1 | . . . . . . 7 | |
3 | 2 | ceqsralv 2585 | . . . . . 6 |
4 | 3 | anbi2d 437 | . . . . 5 |
5 | 1, 4 | syl5bb 181 | . . . 4 |
6 | reu6i 2732 | . . . . 5 | |
7 | 6 | ex 108 | . . . 4 |
8 | 5, 7 | sylbird 159 | . . 3 |
9 | 8 | 3impib 1102 | . 2 |
10 | 9 | 3com23 1110 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 97 wb 98 w3a 885 wceq 1243 wcel 1393 wral 2306 wreu 2308 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 |
This theorem depends on definitions: df-bi 110 df-3an 887 df-tru 1246 df-nf 1350 df-sb 1646 df-eu 1903 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-ral 2311 df-rex 2312 df-reu 2313 df-v 2559 |
This theorem is referenced by: (None) |
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