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| Mirrors > Home > MPE Home > Th. List > Mathboxes > nlim3 | Structured version Visualization version GIF version | ||
| Description: 3 is not a limit ordinal. (Contributed by RP, 13-Dec-2024.) |
| Ref | Expression |
|---|---|
| nlim3 | ⊢ ¬ Lim 3o |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2on 8468 | . 2 ⊢ 2o ∈ On | |
| 2 | nlimsuc 44150 | . . 3 ⊢ (2o ∈ On → ¬ Lim suc 2o) | |
| 3 | df-3o 8456 | . . . 4 ⊢ 3o = suc 2o | |
| 4 | limeq 6374 | . . . 4 ⊢ (3o = suc 2o → (Lim 3o ↔ Lim suc 2o)) | |
| 5 | 3, 4 | ax-mp 5 | . . 3 ⊢ (Lim 3o ↔ Lim suc 2o) |
| 6 | 2, 5 | sylnibr 332 | . 2 ⊢ (2o ∈ On → ¬ Lim 3o) |
| 7 | 1, 6 | ax-mp 5 | 1 ⊢ ¬ Lim 3o |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 ↔ wb 209 = wceq 1570 ∈ wcel 2143 Oncon0 6362 Lim wlim 6363 suc csuc 6364 2oc2o 8448 3oc3o 8449 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 ax-sep 5258 ax-nul 5270 ax-pr 5406 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-ne 2959 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4489 df-pw 4565 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-br 5111 df-opab 5175 df-tr 5220 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-1o 8454 df-2o 8455 df-3o 8456 |
| This theorem is referenced by: (None) |
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