| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > smo0 | Structured version Visualization version GIF version | ||
| Description: The null set is a strictly monotone ordinal function. (Contributed by Andrew Salmon, 20-Nov-2011.) |
| Ref | Expression |
|---|---|
| smo0 | ⊢ Smo ∅ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ord0 6372 | . . 3 ⊢ Ord ∅ | |
| 2 | 1 | iordsmo 8291 | . 2 ⊢ Smo ( I ↾ ∅) |
| 3 | res0 5943 | . . 3 ⊢ ( I ↾ ∅) = ∅ | |
| 4 | smoeq 8284 | . . 3 ⊢ (( I ↾ ∅) = ∅ → (Smo ( I ↾ ∅) ↔ Smo ∅)) | |
| 5 | 3, 4 | ax-mp 5 | . 2 ⊢ (Smo ( I ↾ ∅) ↔ Smo ∅) |
| 6 | 2, 5 | mpbi 230 | 1 ⊢ Smo ∅ |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 = wceq 1542 ∅c0 4274 I cid 5519 ↾ cres 5627 Smo wsmo 8279 |
| 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-10 2147 ax-12 2185 ax-ext 2709 ax-sep 5232 ax-pr 5371 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-tr 5194 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-ord 6321 df-on 6322 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-fv 6501 df-smo 8280 |
| This theorem is referenced by: (None) |
| Copyright terms: Public domain | W3C validator |