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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 2736 | . . 3 ⊢ 𝐴 = 𝐴 | |
| 2 | 1 | olci 867 | . 2 ⊢ (𝐴 ∈ 𝐴 ∨ 𝐴 = 𝐴) |
| 3 | elsucg 6393 | . 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 6325 |
| 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 2708 |
| 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 2715 df-cleq 2728 df-clel 2811 df-v 3431 df-un 3894 df-sn 4568 df-suc 6329 |
| This theorem is referenced by: sucid 6407 nsuceq0 6408 trsuc 6412 sucssel 6420 ordsuc 7765 onpsssuc 7770 nlimsucg 7793 tfrlem11 8327 tfrlem13 8329 tz7.44-2 8346 omeulem1 8517 oeordi 8523 oeeulem 8537 dif1enlem 9094 rexdif1en 9095 dif1en 9096 php4 9144 wofib 9460 suc11reg 9540 cantnfle 9592 cantnflt2 9594 cantnfp1lem3 9601 cantnflem1 9610 dfac12lem1 10066 dfac12lem2 10067 ttukeylem3 10433 ttukeylem7 10437 r1wunlim 10660 noresle 27661 nosupprefixmo 27664 noinfprefixmo 27665 fmla 35563 ex-sategoelelomsuc 35608 ontgval 36613 sucneqond 37681 finxpreclem4 37710 finxpsuclem 37713 dfsuccl4 38795 suceldisj 39139 onexgt 43668 onepsuc 43680 ordnexbtwnsuc 43695 nlimsuc 43868 sucomisnotcard 43971 |
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