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Mirrors > Home > MPE Home > Th. List > Mathboxes > 2reu1 | Structured version Visualization version Unicode version |
Description: Double restricted existential uniqueness. This theorem shows a condition under which a "naive" definition matches the correct one, analogous to 2eu1 2553. (Contributed by Alexander van der Vekens, 25-Jun-2017.) |
Ref | Expression |
---|---|
2reu1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2reu5a 41177 | . . . . . 6 | |
2 | simprr 796 | . . . . . . . . . . . 12 | |
3 | rsp 2929 | . . . . . . . . . . . . . 14 | |
4 | 3 | adantr 481 | . . . . . . . . . . . . 13 |
5 | 4 | impcom 446 | . . . . . . . . . . . 12 |
6 | 2, 5 | jca 554 | . . . . . . . . . . 11 |
7 | 6 | ex 450 | . . . . . . . . . 10 |
8 | 7 | rmoimia 3408 | . . . . . . . . 9 |
9 | nfra1 2941 | . . . . . . . . . 10 | |
10 | 9 | rmoanim 41179 | . . . . . . . . 9 |
11 | 8, 10 | sylib 208 | . . . . . . . 8 |
12 | 11 | ancrd 577 | . . . . . . 7 |
13 | 2rmoswap 41184 | . . . . . . . . 9 | |
14 | 13 | com12 32 | . . . . . . . 8 |
15 | 14 | imdistani 726 | . . . . . . 7 |
16 | 12, 15 | syl6 35 | . . . . . 6 |
17 | 1, 16 | simplbiim 659 | . . . . 5 |
18 | 2reu2rex 41183 | . . . . . 6 | |
19 | rexcom 3099 | . . . . . . 7 | |
20 | 18, 19 | sylib 208 | . . . . . 6 |
21 | 18, 20 | jca 554 | . . . . 5 |
22 | 17, 21 | jctild 566 | . . . 4 |
23 | reu5 3159 | . . . . . 6 | |
24 | reu5 3159 | . . . . . 6 | |
25 | 23, 24 | anbi12i 733 | . . . . 5 |
26 | an4 865 | . . . . 5 | |
27 | 25, 26 | bitri 264 | . . . 4 |
28 | 22, 27 | syl6ibr 242 | . . 3 |
29 | 28 | com12 32 | . 2 |
30 | 2rexreu 41185 | . 2 | |
31 | 29, 30 | impbid1 215 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wa 384 wcel 1990 wral 2912 wrex 2913 wreu 2914 wrmo 2915 |
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-eu 2474 df-mo 2475 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rex 2918 df-reu 2919 df-rmo 2920 |
This theorem is referenced by: 2reu2 41187 2reu3 41188 |
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