![]() |
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > smodm2 | Structured version Visualization version GIF version |
Description: The domain of a strictly monotone ordinal function is an ordinal. (Contributed by Mario Carneiro, 12-Mar-2013.) |
Ref | Expression |
---|---|
smodm2 | ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → Ord 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | smodm 8298 | . 2 ⊢ (Smo 𝐹 → Ord dom 𝐹) | |
2 | fndm 6606 | . . . 4 ⊢ (𝐹 Fn 𝐴 → dom 𝐹 = 𝐴) | |
3 | ordeq 6325 | . . . 4 ⊢ (dom 𝐹 = 𝐴 → (Ord dom 𝐹 ↔ Ord 𝐴)) | |
4 | 2, 3 | syl 17 | . . 3 ⊢ (𝐹 Fn 𝐴 → (Ord dom 𝐹 ↔ Ord 𝐴)) |
5 | 4 | biimpa 478 | . 2 ⊢ ((𝐹 Fn 𝐴 ∧ Ord dom 𝐹) → Ord 𝐴) |
6 | 1, 5 | sylan2 594 | 1 ⊢ ((𝐹 Fn 𝐴 ∧ Smo 𝐹) → Ord 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 397 = wceq 1542 dom cdm 5634 Ord word 6317 Fn wfn 6492 Smo wsmo 8292 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-ext 2704 |
This theorem depends on definitions: df-bi 206 df-an 398 df-3an 1090 df-tru 1545 df-ex 1783 df-sb 2069 df-clab 2711 df-cleq 2725 df-clel 2811 df-ral 3062 df-v 3446 df-in 3918 df-ss 3928 df-uni 4867 df-tr 5224 df-po 5546 df-so 5547 df-fr 5589 df-we 5591 df-ord 6321 df-fn 6500 df-smo 8293 |
This theorem is referenced by: smo11 8311 smoord 8312 smoword 8313 smogt 8314 smocdmdom 8315 coftr 10214 |
Copyright terms: Public domain | W3C validator |