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Mirrors > Home > MPE Home > Th. List > dm0rn0 | Structured version Visualization version Unicode version |
Description: An empty domain is equivalent to an empty range. (Contributed by NM, 21-May-1998.) |
Ref | Expression |
---|---|
dm0rn0 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | alnex 1706 | . . . . . 6 | |
2 | excom 2042 | . . . . . 6 | |
3 | 1, 2 | xchbinx 324 | . . . . 5 |
4 | alnex 1706 | . . . . 5 | |
5 | 3, 4 | bitr4i 267 | . . . 4 |
6 | noel 3919 | . . . . . 6 | |
7 | 6 | nbn 362 | . . . . 5 |
8 | 7 | albii 1747 | . . . 4 |
9 | noel 3919 | . . . . . 6 | |
10 | 9 | nbn 362 | . . . . 5 |
11 | 10 | albii 1747 | . . . 4 |
12 | 5, 8, 11 | 3bitr3i 290 | . . 3 |
13 | abeq1 2733 | . . 3 | |
14 | abeq1 2733 | . . 3 | |
15 | 12, 13, 14 | 3bitr4i 292 | . 2 |
16 | df-dm 5124 | . . 3 | |
17 | 16 | eqeq1i 2627 | . 2 |
18 | dfrn2 5311 | . . 3 | |
19 | 18 | eqeq1i 2627 | . 2 |
20 | 15, 17, 19 | 3bitr4i 292 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wb 196 wal 1481 wceq 1483 wex 1704 wcel 1990 cab 2608 c0 3915 class class class wbr 4653 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-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-br 4654 df-opab 4713 df-cnv 5122 df-dm 5124 df-rn 5125 |
This theorem is referenced by: rn0 5377 relrn0 5383 imadisj 5484 rnsnn0 5601 f00 6087 f0rn0 6090 2nd0 7175 iinon 7437 onoviun 7440 onnseq 7441 map0b 7896 fodomfib 8240 intrnfi 8322 wdomtr 8480 noinfep 8557 wemapwe 8594 fin23lem31 9165 fin23lem40 9173 isf34lem7 9201 isf34lem6 9202 ttukeylem6 9336 fodomb 9348 rpnnen1lem4 11817 rpnnen1lem5 11818 rpnnen1lem4OLD 11823 rpnnen1lem5OLD 11824 fseqsupcl 12776 fseqsupubi 12777 dmtrclfv 13759 ruclem11 14969 prmreclem6 15625 0ram 15724 0ram2 15725 0ramcl 15727 gsumval2 17280 ghmrn 17673 gexex 18256 gsumval3 18308 iinopn 20707 hauscmplem 21209 fbasrn 21688 alexsublem 21848 evth 22758 minveclem1 23195 minveclem3b 23199 ovollb2 23257 ovolunlem1a 23264 ovolunlem1 23265 ovoliunlem1 23270 ovoliun2 23274 ioombl1lem4 23329 uniioombllem1 23349 uniioombllem2 23351 uniioombllem6 23356 mbfsup 23431 mbfinf 23432 mbflimsup 23433 itg1climres 23481 itg2monolem1 23517 itg2mono 23520 itg2i1fseq2 23523 itg2cnlem1 23528 minvecolem1 27730 rge0scvg 29995 esumpcvgval 30140 cvmsss2 31256 fin2so 33396 ptrecube 33409 heicant 33444 isbnd3 33583 totbndbnd 33588 rnnonrel 37897 rnmpt0 39412 stoweidlem35 40252 hoicvr 40762 |
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