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Mirrors > Home > MPE Home > Th. List > eq0rdv | Structured version Visualization version Unicode version |
Description: Deduction rule for equality to the empty set. (Contributed by NM, 11-Jul-2014.) |
Ref | Expression |
---|---|
eq0rdv.1 |
Ref | Expression |
---|---|
eq0rdv |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eq0rdv.1 | . . . 4 | |
2 | 1 | pm2.21d 118 | . . 3 |
3 | 2 | ssrdv 3609 | . 2 |
4 | ss0 3974 | . 2 | |
5 | 3, 4 | syl 17 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wi 4 wceq 1483 wcel 1990 wss 3574 c0 3915 |
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-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-v 3202 df-dif 3577 df-in 3581 df-ss 3588 df-nul 3916 |
This theorem is referenced by: map0b 7896 disjen 8117 mapdom1 8125 pwxpndom2 9487 fzdisj 12368 smu01lem 15207 prmreclem5 15624 vdwap0 15680 natfval 16606 fucbas 16620 fuchom 16621 coafval 16714 efgval 18130 lsppratlem6 19152 lbsextlem4 19161 psrvscafval 19390 cfinufil 21732 ufinffr 21733 fin1aufil 21736 bldisj 22203 reconnlem1 22629 pcofval 22810 bcthlem5 23125 volfiniun 23315 fta1g 23927 fta1 24063 rpvmasum 25215 bj-projval 32984 finxpnom 33238 ipo0 38653 ifr0 38654 limclner 39883 |
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