Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > 1one2o | Structured version Visualization version GIF version |
Description: Ordinal one is not ordinal two. Analogous to 1ne2 11839. (Contributed by AV, 17-Oct-2023.) |
Ref | Expression |
---|---|
1one2o | ⊢ 1o ≠ 2o |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1onn 8258 | . . 3 ⊢ 1o ∈ ω | |
2 | omsucne 7591 | . . 3 ⊢ (1o ∈ ω → 1o ≠ suc 1o) | |
3 | 1, 2 | ax-mp 5 | . 2 ⊢ 1o ≠ suc 1o |
4 | df-2o 8096 | . 2 ⊢ 2o = suc 1o | |
5 | 3, 4 | neeqtrri 3088 | 1 ⊢ 1o ≠ 2o |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2113 ≠ wne 3015 suc csuc 6186 ωcom 7573 1oc1o 8088 2oc2o 8089 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2792 ax-sep 5196 ax-nul 5203 ax-pr 5323 ax-un 7454 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1083 df-3an 1084 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-mo 2621 df-eu 2653 df-clab 2799 df-cleq 2813 df-clel 2892 df-nfc 2962 df-ne 3016 df-ral 3142 df-rex 3143 df-rab 3146 df-v 3493 df-sbc 3769 df-dif 3932 df-un 3934 df-in 3936 df-ss 3945 df-pss 3947 df-nul 4285 df-if 4461 df-pw 4534 df-sn 4561 df-pr 4563 df-tp 4565 df-op 4567 df-uni 4832 df-br 5060 df-opab 5122 df-tr 5166 df-eprel 5458 df-po 5467 df-so 5468 df-fr 5507 df-we 5509 df-ord 6187 df-on 6188 df-lim 6189 df-suc 6190 df-om 7574 df-1o 8095 df-2o 8096 |
This theorem is referenced by: gonanegoal 32620 satffunlem1lem1 32670 satffunlem2lem1 32672 ex-sategoelelomsuc 32694 ex-sategoelel12 32695 |
Copyright terms: Public domain | W3C validator |