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Mirrors > Home > MPE Home > Th. List > sucexb | Structured version Visualization version Unicode version |
Description: A successor exists iff its class argument exists. (Contributed by NM, 22-Jun-1998.) |
Ref | Expression |
---|---|
sucexb |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | unexb 6958 | . 2 | |
2 | snex 4908 | . . 3 | |
3 | 2 | biantru 526 | . 2 |
4 | df-suc 5729 | . . 3 | |
5 | 4 | eleq1i 2692 | . 2 |
6 | 1, 3, 5 | 3bitr4i 292 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wb 196 wa 384 wcel 1990 cvv 3200 cun 3572 csn 4177 csuc 5725 |
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-pr 4906 ax-un 6949 |
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-rex 2918 df-v 3202 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-sn 4178 df-pr 4180 df-uni 4437 df-suc 5729 |
This theorem is referenced by: sucexg 7010 sucelon 7017 ordsucelsuc 7022 oeordi 7667 suc11reg 8516 rankxpsuc 8745 isf32lem2 9176 limsucncmpi 32444 |
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