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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 2737 | . . 3 ⊢ 𝐴 = 𝐴 | |
| 2 | 1 | olci 867 | . 2 ⊢ (𝐴 ∈ 𝐴 ∨ 𝐴 = 𝐴) |
| 3 | elsucg 6388 | . 2 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ suc 𝐴 ↔ (𝐴 ∈ 𝐴 ∨ 𝐴 = 𝐴))) | |
| 4 | 2, 3 | mpbiri 258 | 1 ⊢ (𝐴 ∈ 𝑉 → 𝐴 ∈ suc 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∨ wo 848 = wceq 1542 ∈ wcel 2114 suc csuc 6320 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-v 3443 df-un 3907 df-sn 4582 df-suc 6324 |
| This theorem is referenced by: sucid 6402 nsuceq0 6403 trsuc 6407 sucssel 6415 ordsuc 7758 onpsssuc 7763 nlimsucg 7786 tfrlem11 8321 tfrlem13 8323 tz7.44-2 8340 omeulem1 8511 oeordi 8517 oeeulem 8531 dif1enlem 9088 rexdif1en 9089 dif1en 9090 php4 9138 wofib 9454 suc11reg 9532 cantnfle 9584 cantnflt2 9586 cantnfp1lem3 9593 cantnflem1 9602 dfac12lem1 10058 dfac12lem2 10059 ttukeylem3 10425 ttukeylem7 10429 r1wunlim 10652 noresle 27669 nosupprefixmo 27672 noinfprefixmo 27673 fmla 35556 ex-sategoelelomsuc 35601 ontgval 36606 sucneqond 37541 finxpreclem4 37570 finxpsuclem 37573 dfsuccl4 38646 suceldisj 38990 onexgt 43518 onepsuc 43530 ordnexbtwnsuc 43545 nlimsuc 43718 sucomisnotcard 43821 |
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