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Theorem constrsscn 33991
Description: Closure of the constructible points in the complex numbers. (Contributed by Thierry Arnoux, 25-Jun-2025.)
Hypotheses
Ref Expression
constr0.1 𝐶 = rec((𝑠 ∈ V ↦ {𝑥 ∈ ℂ ∣ (∃𝑎𝑠𝑏𝑠𝑐𝑠𝑑𝑠𝑡 ∈ ℝ ∃𝑟 ∈ ℝ (𝑥 = (𝑎 + (𝑡 · (𝑏𝑎))) ∧ 𝑥 = (𝑐 + (𝑟 · (𝑑𝑐))) ∧ (ℑ‘((∗‘(𝑏𝑎)) · (𝑑𝑐))) ≠ 0) ∨ ∃𝑎𝑠𝑏𝑠𝑐𝑠𝑒𝑠𝑓𝑠𝑡 ∈ ℝ (𝑥 = (𝑎 + (𝑡 · (𝑏𝑎))) ∧ (abs‘(𝑥𝑐)) = (abs‘(𝑒𝑓))) ∨ ∃𝑎𝑠𝑏𝑠𝑐𝑠𝑑𝑠𝑒𝑠𝑓𝑠 (𝑎𝑑 ∧ (abs‘(𝑥𝑎)) = (abs‘(𝑏𝑐)) ∧ (abs‘(𝑥𝑑)) = (abs‘(𝑒𝑓))))}), {0, 1})
constrsscn.1 (𝜑𝑁 ∈ On)
Assertion
Ref Expression
constrsscn (𝜑 → (𝐶𝑁) ⊆ ℂ)
Distinct variable groups:   𝐶,𝑎,𝑠,𝑥   𝐶,𝑏,𝑠,𝑥   𝐶,𝑐,𝑠,𝑥   𝐶,𝑑,𝑠,𝑥   𝐶,𝑒,𝑠,𝑥   𝐶,𝑓,𝑠,𝑥   𝑠,𝑟,𝑥   𝑡,𝑠,𝑥
Allowed substitution hints:   𝜑(𝑥,𝑡,𝑒,𝑓,𝑠,𝑟,𝑎,𝑏,𝑐,𝑑)   𝐶(𝑡,𝑟)   𝑁(𝑥,𝑡,𝑒,𝑓,𝑠,𝑟,𝑎,𝑏,𝑐,𝑑)

Proof of Theorem constrsscn
Dummy variables 𝑛 𝑜 𝑚 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 constrsscn.1 . 2 (𝜑𝑁 ∈ On)
2 fveq2 6856 . . . 4 (𝑚 = ∅ → (𝐶𝑚) = (𝐶‘∅))
32sseq1d 3962 . . 3 (𝑚 = ∅ → ((𝐶𝑚) ⊆ ℂ ↔ (𝐶‘∅) ⊆ ℂ))
4 fveq2 6856 . . . 4 (𝑚 = 𝑛 → (𝐶𝑚) = (𝐶𝑛))
54sseq1d 3962 . . 3 (𝑚 = 𝑛 → ((𝐶𝑚) ⊆ ℂ ↔ (𝐶𝑛) ⊆ ℂ))
6 fveq2 6856 . . . 4 (𝑚 = suc 𝑛 → (𝐶𝑚) = (𝐶‘suc 𝑛))
76sseq1d 3962 . . 3 (𝑚 = suc 𝑛 → ((𝐶𝑚) ⊆ ℂ ↔ (𝐶‘suc 𝑛) ⊆ ℂ))
8 fveq2 6856 . . . 4 (𝑚 = 𝑁 → (𝐶𝑚) = (𝐶𝑁))
98sseq1d 3962 . . 3 (𝑚 = 𝑁 → ((𝐶𝑚) ⊆ ℂ ↔ (𝐶𝑁) ⊆ ℂ))
10 constr0.1 . . . . 5 𝐶 = rec((𝑠 ∈ V ↦ {𝑥 ∈ ℂ ∣ (∃𝑎𝑠𝑏𝑠𝑐𝑠𝑑𝑠𝑡 ∈ ℝ ∃𝑟 ∈ ℝ (𝑥 = (𝑎 + (𝑡 · (𝑏𝑎))) ∧ 𝑥 = (𝑐 + (𝑟 · (𝑑𝑐))) ∧ (ℑ‘((∗‘(𝑏𝑎)) · (𝑑𝑐))) ≠ 0) ∨ ∃𝑎𝑠𝑏𝑠𝑐𝑠𝑒𝑠𝑓𝑠𝑡 ∈ ℝ (𝑥 = (𝑎 + (𝑡 · (𝑏𝑎))) ∧ (abs‘(𝑥𝑐)) = (abs‘(𝑒𝑓))) ∨ ∃𝑎𝑠𝑏𝑠𝑐𝑠𝑑𝑠𝑒𝑠𝑓𝑠 (𝑎𝑑 ∧ (abs‘(𝑥𝑎)) = (abs‘(𝑏𝑐)) ∧ (abs‘(𝑥𝑑)) = (abs‘(𝑒𝑓))))}), {0, 1})
1110constr0 33988 . . . 4 (𝐶‘∅) = {0, 1}
12 0cn 11161 . . . . 5 0 ∈ ℂ
13 ax-1cn 11121 . . . . 5 1 ∈ ℂ
14 prssi 4773 . . . . 5 ((0 ∈ ℂ ∧ 1 ∈ ℂ) → {0, 1} ⊆ ℂ)
1512, 13, 14mp2an 700 . . . 4 {0, 1} ⊆ ℂ
1611, 15eqsstri 3977 . . 3 (𝐶‘∅) ⊆ ℂ
17 simpl 485 . . . . . . . . 9 ((𝑛 ∈ On ∧ (𝐶𝑛) ⊆ ℂ) → 𝑛 ∈ On)
18 eqid 2756 . . . . . . . . 9 (𝐶𝑛) = (𝐶𝑛)
1910, 17, 18constrsuc 33989 . . . . . . . 8 ((𝑛 ∈ On ∧ (𝐶𝑛) ⊆ ℂ) → (𝑥 ∈ (𝐶‘suc 𝑛) ↔ (𝑥 ∈ ℂ ∧ (∃𝑎 ∈ (𝐶𝑛)∃𝑏 ∈ (𝐶𝑛)∃𝑐 ∈ (𝐶𝑛)∃𝑑 ∈ (𝐶𝑛)∃𝑡 ∈ ℝ ∃𝑟 ∈ ℝ (𝑥 = (𝑎 + (𝑡 · (𝑏𝑎))) ∧ 𝑥 = (𝑐 + (𝑟 · (𝑑𝑐))) ∧ (ℑ‘((∗‘(𝑏𝑎)) · (𝑑𝑐))) ≠ 0) ∨ ∃𝑎 ∈ (𝐶𝑛)∃𝑏 ∈ (𝐶𝑛)∃𝑐 ∈ (𝐶𝑛)∃𝑒 ∈ (𝐶𝑛)∃𝑓 ∈ (𝐶𝑛)∃𝑡 ∈ ℝ (𝑥 = (𝑎 + (𝑡 · (𝑏𝑎))) ∧ (abs‘(𝑥𝑐)) = (abs‘(𝑒𝑓))) ∨ ∃𝑎 ∈ (𝐶𝑛)∃𝑏 ∈ (𝐶𝑛)∃𝑐 ∈ (𝐶𝑛)∃𝑑 ∈ (𝐶𝑛)∃𝑒 ∈ (𝐶𝑛)∃𝑓 ∈ (𝐶𝑛)(𝑎𝑑 ∧ (abs‘(𝑥𝑎)) = (abs‘(𝑏𝑐)) ∧ (abs‘(𝑥𝑑)) = (abs‘(𝑒𝑓)))))))
2019biimpa 479 . . . . . . 7 (((𝑛 ∈ On ∧ (𝐶𝑛) ⊆ ℂ) ∧ 𝑥 ∈ (𝐶‘suc 𝑛)) → (𝑥 ∈ ℂ ∧ (∃𝑎 ∈ (𝐶𝑛)∃𝑏 ∈ (𝐶𝑛)∃𝑐 ∈ (𝐶𝑛)∃𝑑 ∈ (𝐶𝑛)∃𝑡 ∈ ℝ ∃𝑟 ∈ ℝ (𝑥 = (𝑎 + (𝑡 · (𝑏𝑎))) ∧ 𝑥 = (𝑐 + (𝑟 · (𝑑𝑐))) ∧ (ℑ‘((∗‘(𝑏𝑎)) · (𝑑𝑐))) ≠ 0) ∨ ∃𝑎 ∈ (𝐶𝑛)∃𝑏 ∈ (𝐶𝑛)∃𝑐 ∈ (𝐶𝑛)∃𝑒 ∈ (𝐶𝑛)∃𝑓 ∈ (𝐶𝑛)∃𝑡 ∈ ℝ (𝑥 = (𝑎 + (𝑡 · (𝑏𝑎))) ∧ (abs‘(𝑥𝑐)) = (abs‘(𝑒𝑓))) ∨ ∃𝑎 ∈ (𝐶𝑛)∃𝑏 ∈ (𝐶𝑛)∃𝑐 ∈ (𝐶𝑛)∃𝑑 ∈ (𝐶𝑛)∃𝑒 ∈ (𝐶𝑛)∃𝑓 ∈ (𝐶𝑛)(𝑎𝑑 ∧ (abs‘(𝑥𝑎)) = (abs‘(𝑏𝑐)) ∧ (abs‘(𝑥𝑑)) = (abs‘(𝑒𝑓))))))
2120simpld 497 . . . . . 6 (((𝑛 ∈ On ∧ (𝐶𝑛) ⊆ ℂ) ∧ 𝑥 ∈ (𝐶‘suc 𝑛)) → 𝑥 ∈ ℂ)
2221ex 415 . . . . 5 ((𝑛 ∈ On ∧ (𝐶𝑛) ⊆ ℂ) → (𝑥 ∈ (𝐶‘suc 𝑛) → 𝑥 ∈ ℂ))
2322ssrdv 3937 . . . 4 ((𝑛 ∈ On ∧ (𝐶𝑛) ⊆ ℂ) → (𝐶‘suc 𝑛) ⊆ ℂ)
2423ex 415 . . 3 (𝑛 ∈ On → ((𝐶𝑛) ⊆ ℂ → (𝐶‘suc 𝑛) ⊆ ℂ))
25 vex 3452 . . . . . . 7 𝑚 ∈ V
2625a1i 11 . . . . . 6 ((Lim 𝑚 ∧ ∀𝑛𝑚 (𝐶𝑛) ⊆ ℂ) → 𝑚 ∈ V)
27 simpl 485 . . . . . 6 ((Lim 𝑚 ∧ ∀𝑛𝑚 (𝐶𝑛) ⊆ ℂ) → Lim 𝑚)
2810, 26, 27constrlim 33990 . . . . 5 ((Lim 𝑚 ∧ ∀𝑛𝑚 (𝐶𝑛) ⊆ ℂ) → (𝐶𝑚) = 𝑜𝑚 (𝐶𝑜))
29 fveq2 6856 . . . . . . . 8 (𝑛 = 𝑜 → (𝐶𝑛) = (𝐶𝑜))
3029sseq1d 3962 . . . . . . 7 (𝑛 = 𝑜 → ((𝐶𝑛) ⊆ ℂ ↔ (𝐶𝑜) ⊆ ℂ))
31 simplr 776 . . . . . . 7 (((Lim 𝑚 ∧ ∀𝑛𝑚 (𝐶𝑛) ⊆ ℂ) ∧ 𝑜𝑚) → ∀𝑛𝑚 (𝐶𝑛) ⊆ ℂ)
32 simpr 487 . . . . . . 7 (((Lim 𝑚 ∧ ∀𝑛𝑚 (𝐶𝑛) ⊆ ℂ) ∧ 𝑜𝑚) → 𝑜𝑚)
3330, 31, 32rspcdva 3577 . . . . . 6 (((Lim 𝑚 ∧ ∀𝑛𝑚 (𝐶𝑛) ⊆ ℂ) ∧ 𝑜𝑚) → (𝐶𝑜) ⊆ ℂ)
3433iunssd 5002 . . . . 5 ((Lim 𝑚 ∧ ∀𝑛𝑚 (𝐶𝑛) ⊆ ℂ) → 𝑜𝑚 (𝐶𝑜) ⊆ ℂ)
3528, 34eqsstrd 3965 . . . 4 ((Lim 𝑚 ∧ ∀𝑛𝑚 (𝐶𝑛) ⊆ ℂ) → (𝐶𝑚) ⊆ ℂ)
3635ex 415 . . 3 (Lim 𝑚 → (∀𝑛𝑚 (𝐶𝑛) ⊆ ℂ → (𝐶𝑚) ⊆ ℂ))
373, 5, 7, 9, 16, 24, 36tfinds 7829 . 2 (𝑁 ∈ On → (𝐶𝑁) ⊆ ℂ)
381, 37syl 17 1 (𝜑 → (𝐶𝑁) ⊆ ℂ)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 398  w3o 1094  w3a 1095   = wceq 1554  wcel 2136  wne 2951  wral 3070  wrex 3080  {crab 3408  Vcvv 3448  wss 3899  c0 4280  {cpr 4578   ciun 4943  cmpt 5175  Oncon0 6335  Lim wlim 6336  suc csuc 6337  cfv 6510  (class class class)co 7385  reccrdg 8368  cc 11061  cr 11062  0cc0 11063  1c1 11064   + caddc 11066   · cmul 11068  cmin 11404  ccj 15099  cim 15101  abscabs 15237
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1809  ax-4 1823  ax-5 1924  ax-6 1981  ax-7 2022  ax-8 2138  ax-9 2146  ax-10 2169  ax-11 2185  ax-12 2206  ax-ext 2728  ax-rep 5221  ax-sep 5240  ax-nul 5250  ax-pr 5384  ax-un 7707  ax-cnex 11119  ax-1cn 11121  ax-icn 11122  ax-addcl 11123  ax-mulcl 11125  ax-i2m1 11131
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 857  df-3or 1096  df-3an 1097  df-tru 1557  df-fal 1567  df-ex 1794  df-nf 1798  df-sb 2085  df-mo 2560  df-eu 2590  df-clab 2735  df-cleq 2748  df-clel 2831  df-nfc 2905  df-ne 2952  df-ral 3071  df-rex 3081  df-reu 3362  df-rab 3409  df-v 3450  df-sbc 3740  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-pss 3919  df-nul 4281  df-if 4475  df-pw 4551  df-sn 4577  df-pr 4579  df-op 4583  df-uni 4860  df-iun 4945  df-br 5095  df-opab 5157  df-mpt 5176  df-tr 5202  df-id 5535  df-eprel 5540  df-po 5548  df-so 5549  df-fr 5593  df-we 5595  df-xp 5646  df-rel 5647  df-cnv 5648  df-co 5649  df-dm 5650  df-rn 5651  df-res 5652  df-ima 5653  df-pred 6277  df-ord 6338  df-on 6339  df-lim 6340  df-suc 6341  df-iota 6466  df-fun 6512  df-fn 6513  df-f 6514  df-f1 6515  df-fo 6516  df-f1o 6517  df-fv 6518  df-ov 7388  df-om 7836  df-2nd 7960  df-frecs 8250  df-wrecs 8281  df-recs 8330  df-rdg 8369
This theorem is referenced by:  constrsslem  33992  constrconj  33996  constrfin  33997  constrelextdg2  33998  constrextdg2lem  33999  constrext2chnlem  34001  constrcn  34011
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