Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > peano2b | Structured version Visualization version GIF version |
Description: A class belongs to omega iff its successor does. (Contributed by NM, 3-Dec-1995.) |
Ref | Expression |
---|---|
peano2b | ⊢ (𝐴 ∈ ω ↔ suc 𝐴 ∈ ω) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | limom 7576 | . 2 ⊢ Lim ω | |
2 | limsuc 7545 | . 2 ⊢ (Lim ω → (𝐴 ∈ ω ↔ suc 𝐴 ∈ ω)) | |
3 | 1, 2 | ax-mp 5 | 1 ⊢ (𝐴 ∈ ω ↔ suc 𝐴 ∈ ω) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 208 ∈ wcel 2114 Lim wlim 6173 suc csuc 6174 ωcom 7561 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2792 ax-sep 5184 ax-nul 5191 ax-pr 5311 ax-un 7442 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2653 df-clab 2799 df-cleq 2813 df-clel 2891 df-nfc 2959 df-ne 3012 df-ral 3138 df-rex 3139 df-rab 3142 df-v 3483 df-sbc 3759 df-dif 3922 df-un 3924 df-in 3926 df-ss 3935 df-pss 3937 df-nul 4275 df-if 4449 df-pw 4522 df-sn 4549 df-pr 4551 df-tp 4553 df-op 4555 df-uni 4820 df-br 5048 df-opab 5110 df-tr 5154 df-eprel 5446 df-po 5455 df-so 5456 df-fr 5495 df-we 5497 df-ord 6175 df-on 6176 df-lim 6177 df-suc 6178 df-om 7562 |
This theorem is referenced by: nnsuc 7578 peano2 7583 peano5 7586 frsuc 8053 frsucmptn 8055 nnaordi 8225 nnmsucr 8232 omsmolem 8261 php 8682 php4 8685 unblem1 8751 isfinite2 8757 inf0 9065 inf3lem1 9072 inf3lem5 9076 cantnfp1lem3 9124 cantnflem1 9133 itunisuc 9822 ituniiun 9825 indpi 10310 rdgeqoa 34662 |
Copyright terms: Public domain | W3C validator |