Mathbox for Thierry Arnoux |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > reff | Structured version Visualization version Unicode version |
Description: For any cover refinement, there exists a function associating with each set in the refinement a set in the original cover containing it. This is sometimes used as a defintion of refinement. Note that this definition uses the axiom of choice through ac6sg 9310. (Contributed by Thierry Arnoux, 12-Jan-2020.) |
Ref | Expression |
---|---|
reff |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssid 3624 | . . . 4 | |
2 | eqid 2622 | . . . . . 6 | |
3 | eqid 2622 | . . . . . 6 | |
4 | 2, 3 | isref 21312 | . . . . 5 |
5 | 4 | simprbda 653 | . . . 4 |
6 | 1, 5 | syl5sseq 3653 | . . 3 |
7 | 4 | simplbda 654 | . . . 4 |
8 | sseq2 3627 | . . . . . 6 | |
9 | 8 | ac6sg 9310 | . . . . 5 |
10 | 9 | adantr 481 | . . . 4 |
11 | 7, 10 | mpd 15 | . . 3 |
12 | 6, 11 | jca 554 | . 2 |
13 | simplr 792 | . . . . . . 7 | |
14 | nfv 1843 | . . . . . . . . . . . . 13 | |
15 | nfv 1843 | . . . . . . . . . . . . . 14 | |
16 | nfra1 2941 | . . . . . . . . . . . . . 14 | |
17 | 15, 16 | nfan 1828 | . . . . . . . . . . . . 13 |
18 | 14, 17 | nfan 1828 | . . . . . . . . . . . 12 |
19 | nfv 1843 | . . . . . . . . . . . 12 | |
20 | 18, 19 | nfan 1828 | . . . . . . . . . . 11 |
21 | simplrl 800 | . . . . . . . . . . . . . . 15 | |
22 | simpr 477 | . . . . . . . . . . . . . . 15 | |
23 | 21, 22 | ffvelrnd 6360 | . . . . . . . . . . . . . 14 |
24 | 23 | adantlr 751 | . . . . . . . . . . . . 13 |
25 | 24 | adantr 481 | . . . . . . . . . . . 12 |
26 | simplrr 801 | . . . . . . . . . . . . . . 15 | |
27 | 26 | adantlr 751 | . . . . . . . . . . . . . 14 |
28 | simpr 477 | . . . . . . . . . . . . . 14 | |
29 | rspa 2930 | . . . . . . . . . . . . . 14 | |
30 | 27, 28, 29 | syl2anc 693 | . . . . . . . . . . . . 13 |
31 | 30 | sselda 3603 | . . . . . . . . . . . 12 |
32 | eleq2 2690 | . . . . . . . . . . . . 13 | |
33 | 32 | rspcev 3309 | . . . . . . . . . . . 12 |
34 | 25, 31, 33 | syl2anc 693 | . . . . . . . . . . 11 |
35 | simpr 477 | . . . . . . . . . . . 12 | |
36 | eluni2 4440 | . . . . . . . . . . . 12 | |
37 | 35, 36 | sylib 208 | . . . . . . . . . . 11 |
38 | 20, 34, 37 | r19.29af 3076 | . . . . . . . . . 10 |
39 | eluni2 4440 | . . . . . . . . . 10 | |
40 | 38, 39 | sylibr 224 | . . . . . . . . 9 |
41 | 40 | ex 450 | . . . . . . . 8 |
42 | 41 | ssrdv 3609 | . . . . . . 7 |
43 | 13, 42 | eqssd 3620 | . . . . . 6 |
44 | 26, 22, 29 | syl2anc 693 | . . . . . . . . 9 |
45 | 8 | rspcev 3309 | . . . . . . . . 9 |
46 | 23, 44, 45 | syl2anc 693 | . . . . . . . 8 |
47 | 46 | ex 450 | . . . . . . 7 |
48 | 18, 47 | ralrimi 2957 | . . . . . 6 |
49 | 4 | ad2antrr 762 | . . . . . 6 |
50 | 43, 48, 49 | mpbir2and 957 | . . . . 5 |
51 | 50 | ex 450 | . . . 4 |
52 | 51 | exlimdv 1861 | . . 3 |
53 | 52 | impr 649 | . 2 |
54 | 12, 53 | impbida 877 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wa 384 wceq 1483 wex 1704 wcel 1990 wral 2912 wrex 2913 wss 3574 cuni 4436 class class class wbr 4653 wf 5884 cfv 5888 cref 21305 |
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-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-rep 4771 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 ax-reg 8497 ax-inf2 8538 ax-ac2 9285 |
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 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-reu 2919 df-rmo 2920 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-pss 3590 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-int 4476 df-iun 4522 df-iin 4523 df-br 4654 df-opab 4713 df-mpt 4730 df-tr 4753 df-id 5024 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-se 5074 df-we 5075 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-pred 5680 df-ord 5726 df-on 5727 df-lim 5728 df-suc 5729 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-isom 5897 df-riota 6611 df-om 7066 df-wrecs 7407 df-recs 7468 df-rdg 7506 df-en 7956 df-r1 8627 df-rank 8628 df-card 8765 df-ac 8939 df-ref 21308 |
This theorem is referenced by: locfinreflem 29907 |
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