| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 2740 | . . 3 ⊢ 𝐴 = 𝐴 | |
| 2 | 1 | olci 872 | . 2 ⊢ (𝐴 ∈ 𝐴 ∨ 𝐴 = 𝐴) |
| 3 | elsucg 6387 | . 2 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ suc 𝐴 ↔ (𝐴 ∈ 𝐴 ∨ 𝐴 = 𝐴))) | |
| 4 | 2, 3 | mpbiri 259 | 1 ⊢ (𝐴 ∈ 𝑉 → 𝐴 ∈ suc 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∨ wo 853 = wceq 1547 ∈ wcel 2119 suc csuc 6319 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2712 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-tru 1550 df-ex 1787 df-sb 2074 df-clab 2719 df-cleq 2732 df-clel 2815 df-v 3434 df-un 3895 df-sn 4563 df-suc 6323 |
| This theorem is referenced by: sucid 6401 nsuceq0 6402 trsuc 6406 sucssel 6414 ordsuc 7761 onpsssuc 7766 nlimsucg 7789 tfrlem11 8324 tfrlem13 8326 tz7.44-2 8343 omeulem1 8514 oeordi 8520 oeeulem 8534 dif1enlem 9091 rexdif1en 9092 dif1en 9093 php4 9141 wofib 9457 suc11reg 9538 cantnfle 9590 cantnflt2 9592 cantnfp1lem3 9599 cantnflem1 9608 dfac12lem1 10064 dfac12lem2 10065 ttukeylem3 10431 ttukeylem7 10435 r1wunlim 10658 noresle 27686 nosupprefixmo 27689 noinfprefixmo 27690 fmla 35616 ex-sategoelelomsuc 35661 ontgval 36666 sucneqond 37734 finxpreclem4 37763 finxpsuclem 37766 dfsuccl4 38848 suceldisj 39192 onexgt 43692 onepsuc 43704 ordnexbtwnsuc 43719 nlimsuc 43892 sucomisnotcard 43995 |
| Copyright terms: Public domain | W3C validator |