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

Theorem scutbdaybnd 27316
Description: An upper bound on the birthday of a surreal cut. (Contributed by Scott Fenton, 10-Aug-2024.)
Assertion
Ref Expression
scutbdaybnd ((𝐴 <<s 𝐵𝑂 ∈ On ∧ ( bday “ (𝐴𝐵)) ⊆ 𝑂) → ( bday ‘(𝐴 |s 𝐵)) ⊆ 𝑂)

Proof of Theorem scutbdaybnd
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 etasslt 27314 . 2 ((𝐴 <<s 𝐵𝑂 ∈ On ∧ ( bday “ (𝐴𝐵)) ⊆ 𝑂) → ∃𝑥 No (𝐴 <<s {𝑥} ∧ {𝑥} <<s 𝐵 ∧ ( bday 𝑥) ⊆ 𝑂))
2 simpl1 1192 . . . . 5 (((𝐴 <<s 𝐵𝑂 ∈ On ∧ ( bday “ (𝐴𝐵)) ⊆ 𝑂) ∧ (𝑥 No ∧ (𝐴 <<s {𝑥} ∧ {𝑥} <<s 𝐵 ∧ ( bday 𝑥) ⊆ 𝑂))) → 𝐴 <<s 𝐵)
3 scutbday 27305 . . . . 5 (𝐴 <<s 𝐵 → ( bday ‘(𝐴 |s 𝐵)) = ( bday “ {𝑦 No ∣ (𝐴 <<s {𝑦} ∧ {𝑦} <<s 𝐵)}))
42, 3syl 17 . . . 4 (((𝐴 <<s 𝐵𝑂 ∈ On ∧ ( bday “ (𝐴𝐵)) ⊆ 𝑂) ∧ (𝑥 No ∧ (𝐴 <<s {𝑥} ∧ {𝑥} <<s 𝐵 ∧ ( bday 𝑥) ⊆ 𝑂))) → ( bday ‘(𝐴 |s 𝐵)) = ( bday “ {𝑦 No ∣ (𝐴 <<s {𝑦} ∧ {𝑦} <<s 𝐵)}))
5 bdayfn 27275 . . . . . 6 bday Fn No
6 ssrab2 4078 . . . . . 6 {𝑦 No ∣ (𝐴 <<s {𝑦} ∧ {𝑦} <<s 𝐵)} ⊆ No
7 sneq 4639 . . . . . . . . 9 (𝑦 = 𝑥 → {𝑦} = {𝑥})
87breq2d 5161 . . . . . . . 8 (𝑦 = 𝑥 → (𝐴 <<s {𝑦} ↔ 𝐴 <<s {𝑥}))
97breq1d 5159 . . . . . . . 8 (𝑦 = 𝑥 → ({𝑦} <<s 𝐵 ↔ {𝑥} <<s 𝐵))
108, 9anbi12d 632 . . . . . . 7 (𝑦 = 𝑥 → ((𝐴 <<s {𝑦} ∧ {𝑦} <<s 𝐵) ↔ (𝐴 <<s {𝑥} ∧ {𝑥} <<s 𝐵)))
11 simprl 770 . . . . . . 7 (((𝐴 <<s 𝐵𝑂 ∈ On ∧ ( bday “ (𝐴𝐵)) ⊆ 𝑂) ∧ (𝑥 No ∧ (𝐴 <<s {𝑥} ∧ {𝑥} <<s 𝐵 ∧ ( bday 𝑥) ⊆ 𝑂))) → 𝑥 No )
12 simprr1 1222 . . . . . . . 8 (((𝐴 <<s 𝐵𝑂 ∈ On ∧ ( bday “ (𝐴𝐵)) ⊆ 𝑂) ∧ (𝑥 No ∧ (𝐴 <<s {𝑥} ∧ {𝑥} <<s 𝐵 ∧ ( bday 𝑥) ⊆ 𝑂))) → 𝐴 <<s {𝑥})
13 simprr2 1223 . . . . . . . 8 (((𝐴 <<s 𝐵𝑂 ∈ On ∧ ( bday “ (𝐴𝐵)) ⊆ 𝑂) ∧ (𝑥 No ∧ (𝐴 <<s {𝑥} ∧ {𝑥} <<s 𝐵 ∧ ( bday 𝑥) ⊆ 𝑂))) → {𝑥} <<s 𝐵)
1412, 13jca 513 . . . . . . 7 (((𝐴 <<s 𝐵𝑂 ∈ On ∧ ( bday “ (𝐴𝐵)) ⊆ 𝑂) ∧ (𝑥 No ∧ (𝐴 <<s {𝑥} ∧ {𝑥} <<s 𝐵 ∧ ( bday 𝑥) ⊆ 𝑂))) → (𝐴 <<s {𝑥} ∧ {𝑥} <<s 𝐵))
1510, 11, 14elrabd 3686 . . . . . 6 (((𝐴 <<s 𝐵𝑂 ∈ On ∧ ( bday “ (𝐴𝐵)) ⊆ 𝑂) ∧ (𝑥 No ∧ (𝐴 <<s {𝑥} ∧ {𝑥} <<s 𝐵 ∧ ( bday 𝑥) ⊆ 𝑂))) → 𝑥 ∈ {𝑦 No ∣ (𝐴 <<s {𝑦} ∧ {𝑦} <<s 𝐵)})
16 fnfvima 7235 . . . . . 6 (( bday Fn No ∧ {𝑦 No ∣ (𝐴 <<s {𝑦} ∧ {𝑦} <<s 𝐵)} ⊆ No 𝑥 ∈ {𝑦 No ∣ (𝐴 <<s {𝑦} ∧ {𝑦} <<s 𝐵)}) → ( bday 𝑥) ∈ ( bday “ {𝑦 No ∣ (𝐴 <<s {𝑦} ∧ {𝑦} <<s 𝐵)}))
175, 6, 15, 16mp3an12i 1466 . . . . 5 (((𝐴 <<s 𝐵𝑂 ∈ On ∧ ( bday “ (𝐴𝐵)) ⊆ 𝑂) ∧ (𝑥 No ∧ (𝐴 <<s {𝑥} ∧ {𝑥} <<s 𝐵 ∧ ( bday 𝑥) ⊆ 𝑂))) → ( bday 𝑥) ∈ ( bday “ {𝑦 No ∣ (𝐴 <<s {𝑦} ∧ {𝑦} <<s 𝐵)}))
18 intss1 4968 . . . . 5 (( bday 𝑥) ∈ ( bday “ {𝑦 No ∣ (𝐴 <<s {𝑦} ∧ {𝑦} <<s 𝐵)}) → ( bday “ {𝑦 No ∣ (𝐴 <<s {𝑦} ∧ {𝑦} <<s 𝐵)}) ⊆ ( bday 𝑥))
1917, 18syl 17 . . . 4 (((𝐴 <<s 𝐵𝑂 ∈ On ∧ ( bday “ (𝐴𝐵)) ⊆ 𝑂) ∧ (𝑥 No ∧ (𝐴 <<s {𝑥} ∧ {𝑥} <<s 𝐵 ∧ ( bday 𝑥) ⊆ 𝑂))) → ( bday “ {𝑦 No ∣ (𝐴 <<s {𝑦} ∧ {𝑦} <<s 𝐵)}) ⊆ ( bday 𝑥))
204, 19eqsstrd 4021 . . 3 (((𝐴 <<s 𝐵𝑂 ∈ On ∧ ( bday “ (𝐴𝐵)) ⊆ 𝑂) ∧ (𝑥 No ∧ (𝐴 <<s {𝑥} ∧ {𝑥} <<s 𝐵 ∧ ( bday 𝑥) ⊆ 𝑂))) → ( bday ‘(𝐴 |s 𝐵)) ⊆ ( bday 𝑥))
21 simprr3 1224 . . 3 (((𝐴 <<s 𝐵𝑂 ∈ On ∧ ( bday “ (𝐴𝐵)) ⊆ 𝑂) ∧ (𝑥 No ∧ (𝐴 <<s {𝑥} ∧ {𝑥} <<s 𝐵 ∧ ( bday 𝑥) ⊆ 𝑂))) → ( bday 𝑥) ⊆ 𝑂)
2220, 21sstrd 3993 . 2 (((𝐴 <<s 𝐵𝑂 ∈ On ∧ ( bday “ (𝐴𝐵)) ⊆ 𝑂) ∧ (𝑥 No ∧ (𝐴 <<s {𝑥} ∧ {𝑥} <<s 𝐵 ∧ ( bday 𝑥) ⊆ 𝑂))) → ( bday ‘(𝐴 |s 𝐵)) ⊆ 𝑂)
231, 22rexlimddv 3162 1 ((𝐴 <<s 𝐵𝑂 ∈ On ∧ ( bday “ (𝐴𝐵)) ⊆ 𝑂) → ( bday ‘(𝐴 |s 𝐵)) ⊆ 𝑂)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 397  w3a 1088   = wceq 1542  wcel 2107  {crab 3433  cun 3947  wss 3949  {csn 4629   cint 4951   class class class wbr 5149  cima 5680  Oncon0 6365   Fn wfn 6539  cfv 6544  (class class class)co 7409   No csur 27143   bday cbday 27145   <<s csslt 27282   |s cscut 27284
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-10 2138  ax-11 2155  ax-12 2172  ax-ext 2704  ax-rep 5286  ax-sep 5300  ax-nul 5307  ax-pr 5428  ax-un 7725
This theorem depends on definitions:  df-bi 206  df-an 398  df-or 847  df-3or 1089  df-3an 1090  df-tru 1545  df-fal 1555  df-ex 1783  df-nf 1787  df-sb 2069  df-mo 2535  df-eu 2564  df-clab 2711  df-cleq 2725  df-clel 2811  df-nfc 2886  df-ne 2942  df-ral 3063  df-rex 3072  df-rmo 3377  df-reu 3378  df-rab 3434  df-v 3477  df-sbc 3779  df-csb 3895  df-dif 3952  df-un 3954  df-in 3956  df-ss 3966  df-pss 3968  df-nul 4324  df-if 4530  df-pw 4605  df-sn 4630  df-pr 4632  df-tp 4634  df-op 4636  df-uni 4910  df-int 4952  df-iun 5000  df-br 5150  df-opab 5212  df-mpt 5233  df-tr 5267  df-id 5575  df-eprel 5581  df-po 5589  df-so 5590  df-fr 5632  df-we 5634  df-xp 5683  df-rel 5684  df-cnv 5685  df-co 5686  df-dm 5687  df-rn 5688  df-res 5689  df-ima 5690  df-ord 6368  df-on 6369  df-suc 6371  df-iota 6496  df-fun 6546  df-fn 6547  df-f 6548  df-f1 6549  df-fo 6550  df-f1o 6551  df-fv 6552  df-riota 7365  df-ov 7412  df-oprab 7413  df-mpo 7414  df-1o 8466  df-2o 8467  df-no 27146  df-slt 27147  df-bday 27148  df-sslt 27283  df-scut 27285
This theorem is referenced by:  madebdayim  27382  negsbdaylem  27530
  Copyright terms: Public domain W3C validator