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Mirrors > Home > MPE Home > Th. List > sucidg | Structured version Visualization version GIF version |
Description: Part of Proposition 7.23 of [TakeutiZaring] p. 41 (generalized). Lemma 1.7 of [Schloeder] p. 1. (Contributed by NM, 25-Mar-1995.) (Proof shortened by Scott Fenton, 20-Feb-2012.) |
Ref | Expression |
---|---|
sucidg | ⊢ (𝐴 ∈ 𝑉 → 𝐴 ∈ suc 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2731 | . . 3 ⊢ 𝐴 = 𝐴 | |
2 | 1 | olci 864 | . 2 ⊢ (𝐴 ∈ 𝐴 ∨ 𝐴 = 𝐴) |
3 | elsucg 6390 | . 2 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ suc 𝐴 ↔ (𝐴 ∈ 𝐴 ∨ 𝐴 = 𝐴))) | |
4 | 2, 3 | mpbiri 257 | 1 ⊢ (𝐴 ∈ 𝑉 → 𝐴 ∈ suc 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∨ wo 845 = wceq 1541 ∈ wcel 2106 suc csuc 6324 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-ext 2702 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-tru 1544 df-ex 1782 df-sb 2068 df-clab 2709 df-cleq 2723 df-clel 2809 df-v 3448 df-un 3918 df-sn 4592 df-suc 6328 |
This theorem is referenced by: sucid 6404 nsuceq0 6405 trsuc 6409 sucssel 6417 ordsuc 7753 ordsucOLD 7754 onpsssuc 7759 nlimsucg 7783 tfrlem11 8339 tfrlem13 8341 tz7.44-2 8358 omeulem1 8534 oeordi 8539 oeeulem 8553 dif1enlem 9107 dif1enlemOLD 9108 rexdif1en 9109 rexdif1enOLD 9110 dif1en 9111 dif1enOLD 9113 php4 9164 wofib 9490 suc11reg 9564 cantnfle 9616 cantnflt2 9618 cantnfp1lem3 9625 cantnflem1 9634 dfac12lem1 10088 dfac12lem2 10089 ttukeylem3 10456 ttukeylem7 10460 r1wunlim 10682 noresle 27082 nosupprefixmo 27085 noinfprefixmo 27086 fmla 34062 ex-sategoelelomsuc 34107 ontgval 34979 sucneqond 35909 finxpreclem4 35938 finxpsuclem 35941 onexgt 41632 onepsuc 41644 ordnexbtwnsuc 41660 nlimsuc 41835 sucomisnotcard 41938 |
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