Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > dmrnssfld | Structured version Visualization version Unicode version |
Description: The domain and range of a class are included in its double union. (Contributed by NM, 13-May-2008.) |
Ref | Expression |
---|---|
dmrnssfld |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | vex 3203 | . . . . 5 | |
2 | 1 | eldm2 5322 | . . . 4 |
3 | 1 | prid1 4297 | . . . . . 6 |
4 | vex 3203 | . . . . . . . . . 10 | |
5 | 1, 4 | uniop 4977 | . . . . . . . . 9 |
6 | 1, 4 | uniopel 4978 | . . . . . . . . 9 |
7 | 5, 6 | syl5eqelr 2706 | . . . . . . . 8 |
8 | elssuni 4467 | . . . . . . . 8 | |
9 | 7, 8 | syl 17 | . . . . . . 7 |
10 | 9 | sseld 3602 | . . . . . 6 |
11 | 3, 10 | mpi 20 | . . . . 5 |
12 | 11 | exlimiv 1858 | . . . 4 |
13 | 2, 12 | sylbi 207 | . . 3 |
14 | 13 | ssriv 3607 | . 2 |
15 | 4 | elrn2 5365 | . . . 4 |
16 | 4 | prid2 4298 | . . . . . 6 |
17 | 9 | sseld 3602 | . . . . . 6 |
18 | 16, 17 | mpi 20 | . . . . 5 |
19 | 18 | exlimiv 1858 | . . . 4 |
20 | 15, 19 | sylbi 207 | . . 3 |
21 | 20 | ssriv 3607 | . 2 |
22 | 14, 21 | unssi 3788 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wex 1704 wcel 1990 cun 3572 wss 3574 cpr 4179 cop 4183 cuni 4436 cdm 5114 crn 5115 |
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 ax-sep 4781 ax-nul 4789 ax-pr 4906 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 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-rex 2918 df-rab 2921 df-v 3202 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-cnv 5122 df-dm 5124 df-rn 5125 |
This theorem is referenced by: relfld 5661 relcoi2 5663 dmexg 7097 rnexg 7098 wundm 9550 wunrn 9551 relexpdm 13783 relexprn 13787 relexpfld 13789 psdmrn 17207 dirdm 17234 dirge 17237 tailf 32370 filnetlem3 32375 |
Copyright terms: Public domain | W3C validator |