MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  oldf Structured version   Visualization version   GIF version

Theorem oldf 28157
Description: The older function is a function from ordinals to sets of surreals. (Contributed by Scott Fenton, 6-Aug-2024.)
Assertion
Ref Expression
oldf O :On⟶𝒫 No

Proof of Theorem oldf
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-old 28148 . 2 O = (𝑥 ∈ On ↦ ∪ ( M “ 𝑥))
2 imassrn 6061 . . . . . . . 8 ( M “ 𝑥) ⊆ ran M
3 madef 28156 . . . . . . . . 9 M :On⟶𝒫 No
4 frn 6705 . . . . . . . . 9 ( M :On⟶𝒫 No → ran M ⊆ 𝒫 No )
53, 4ax-mp 5 . . . . . . . 8 ran M ⊆ 𝒫 No
62, 5sstri 3939 . . . . . . 7 ( M “ 𝑥) ⊆ 𝒫 No
76sseli 3926 . . . . . 6 (𝑦 ∈ ( M “ 𝑥) → 𝑦 ∈ 𝒫 No )
87elpwid 4565 . . . . 5 (𝑦 ∈ ( M “ 𝑥) → 𝑦 ⊆ No )
98rgen 3078 . . . 4 ∀𝑦 ∈ ( M “ 𝑥)𝑦 ⊆ No
109a1i 11 . . 3 (𝑥 ∈ On → ∀𝑦 ∈ ( M “ 𝑥)𝑦 ⊆ No )
11 ffun 6700 . . . . . . . 8 ( M :On⟶𝒫 No → Fun M )
123, 11ax-mp 5 . . . . . . 7 Fun M
13 vex 3454 . . . . . . . 8 𝑥 ∈ V
1413funimaex 6615 . . . . . . 7 (Fun M → ( M “ 𝑥) ∈ V)
1512, 14ax-mp 5 . . . . . 6 ( M “ 𝑥) ∈ V
1615uniex 7741 . . . . 5 ∪ ( M “ 𝑥) ∈ V
1716elpw 4560 . . . 4 (∪ ( M “ 𝑥) ∈ 𝒫 No ↔ ∪ ( M “ 𝑥) ⊆ No )
18 unissb 4900 . . . 4 (∪ ( M “ 𝑥) ⊆ No ↔ ∀𝑦 ∈ ( M “ 𝑥)𝑦 ⊆ No )
1917, 18bitri 278 . . 3 (∪ ( M “ 𝑥) ∈ 𝒫 No ↔ ∀𝑦 ∈ ( M “ 𝑥)𝑦 ⊆ No )
2010, 19sylibr 237 . 2 (𝑥 ∈ On → ∪ ( M “ 𝑥) ∈ 𝒫 No )
211, 20fmpti 7100 1 O :On⟶𝒫 No
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   ∈ wcel 2145  ∀wral 3076  Vcvv 3450   ⊆ wss 3898  𝒫 cpw 4556  ∪ cuni 4866  ran crn 5648   “ cima 5650  Oncon0 6351  Fun wfun 6521  ⟶wf 6523   No csur 27931   M cmade 28142   O cold 28143
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2732  ax-rep 5231  ax-sep 5248  ax-nul 5259  ax-pow 5326  ax-pr 5390  ax-un 7734
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ne 2956  df-ral 3077  df-rex 3087  df-rmo 3365  df-reu 3366  df-rab 3413  df-v 3452  df-sbc 3739  df-csb 3847  df-dif 3901  df-un 3903  df-in 3905  df-ss 3915  df-pss 3918  df-nul 4279  df-if 4482  df-pw 4558  df-sn 4584  df-pr 4586  df-tp 4588  df-op 4590  df-uni 4867  df-int 4907  df-iun 4952  df-br 5103  df-opab 5167  df-mpt 5186  df-tr 5212  df-id 5542  df-eprel 5547  df-po 5555  df-so 5556  df-fr 5600  df-we 5602  df-xp 5653  df-rel 5654  df-cnv 5655  df-co 5656  df-dm 5657  df-rn 5658  df-res 5659  df-ima 5660  df-pred 6293  df-ord 6354  df-on 6355  df-suc 6357  df-iota 6483  df-fun 6529  df-fn 6530  df-f 6531  df-f1 6532  df-fo 6533  df-f1o 6534  df-fv 6535  df-riota 7365  df-ov 7411  df-oprab 7412  df-mpo 7413  df-2nd 7985  df-frecs 8277  df-wrecs 8308  df-recs 8357  df-1o 8454  df-2o 8455  df-no 27934  df-lts 27935  df-bday 27936  df-slts 28078  df-cuts 28080  df-made 28147  df-old 28148
This theorem is used by:  oldssno  28161  leftf  28175  rightf  28176  oldssmade  28187  oldss  28190  oldlim  28207  oldbdayim  28209
  Copyright terms: Public domain W3C validator