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Mirrors > Home > MPE Home > Th. List > uniwf | Structured version Visualization version Unicode version |
Description: A union is well-founded iff the base set is. (Contributed by Mario Carneiro, 8-Jun-2013.) (Revised by Mario Carneiro, 17-Nov-2014.) |
Ref | Expression |
---|---|
uniwf |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | r1tr 8639 | . . . . . . . 8 | |
2 | rankidb 8663 | . . . . . . . 8 | |
3 | trss 4761 | . . . . . . . 8 | |
4 | 1, 2, 3 | mpsyl 68 | . . . . . . 7 |
5 | rankdmr1 8664 | . . . . . . . 8 | |
6 | r1sucg 8632 | . . . . . . . 8 | |
7 | 5, 6 | ax-mp 5 | . . . . . . 7 |
8 | 4, 7 | syl6sseq 3651 | . . . . . 6 |
9 | sspwuni 4611 | . . . . . 6 | |
10 | 8, 9 | sylib 208 | . . . . 5 |
11 | fvex 6201 | . . . . . 6 | |
12 | 11 | elpw2 4828 | . . . . 5 |
13 | 10, 12 | sylibr 224 | . . . 4 |
14 | 13, 7 | syl6eleqr 2712 | . . 3 |
15 | r1elwf 8659 | . . 3 | |
16 | 14, 15 | syl 17 | . 2 |
17 | pwwf 8670 | . . 3 | |
18 | pwuni 4474 | . . . 4 | |
19 | sswf 8671 | . . . 4 | |
20 | 18, 19 | mpan2 707 | . . 3 |
21 | 17, 20 | sylbi 207 | . 2 |
22 | 16, 21 | impbii 199 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wb 196 wceq 1483 wcel 1990 wss 3574 cpw 4158 cuni 4436 wtr 4752 cdm 5114 cima 5117 con0 5723 csuc 5725 cfv 5888 cr1 8625 crnk 8626 |
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-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 |
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-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-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-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-om 7066 df-wrecs 7407 df-recs 7468 df-rdg 7506 df-r1 8627 df-rank 8628 |
This theorem is referenced by: rankuni2b 8716 r1limwun 9558 wfgru 9638 |
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