Theorem 1fldgenq 33286

Description: The field of rational numbers ℚ is generated by 1 in ℂ_fld, that is, ℚ is the prime field of ℂ_fld. (Contributed by Thierry Arnoux, 15-Jan-2025.)

Assertion

Ref	Expression
1fldgenq	⊢ (ℂfld fldGen {1}) = ℚ

Proof of Theorem 1fldgenq

Dummy variables 𝑞 𝑝 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		cnfldbas 21296	. . . . 5 ⊢ ℂ = (Base‘ℂfld)
2		cndrng 21336	. . . . . 6 ⊢ ℂfld ∈ DivRing
3	2	a1i 11	. . . . 5 ⊢ (⊤ → ℂfld ∈ DivRing)
4		qsscn 12858	. . . . . 6 ⊢ ℚ ⊆ ℂ
5	4	a1i 11	. . . . 5 ⊢ (⊤ → ℚ ⊆ ℂ)
6		1z 12502	. . . . . . . 8 ⊢ 1 ∈ ℤ
7		snssi 4760	. . . . . . . 8 ⊢ (1 ∈ ℤ → {1} ⊆ ℤ)
8	6, 7	ax-mp 5	. . . . . . 7 ⊢ {1} ⊆ ℤ
9		zssq 12854	. . . . . . 7 ⊢ ℤ ⊆ ℚ
10	8, 9	sstri 3944	. . . . . 6 ⊢ {1} ⊆ ℚ
11	10	a1i 11	. . . . 5 ⊢ (⊤ → {1} ⊆ ℚ)
12	1, 3, 5, 11	fldgenss 33280	. . . 4 ⊢ (⊤ → (ℂfld fldGen {1}) ⊆ (ℂfld fldGen ℚ))
13		qsubdrg 21357	. . . . . . . 8 ⊢ (ℚ ∈ (SubRing‘ℂfld) ∧ (ℂfld ↾s ℚ) ∈ DivRing)
14	13	simpli 483	. . . . . . 7 ⊢ ℚ ∈ (SubRing‘ℂfld)
15	13	simpri 485	. . . . . . 7 ⊢ (ℂfld ↾s ℚ) ∈ DivRing
16		issdrg 20704	. . . . . . 7 ⊢ (ℚ ∈ (SubDRing‘ℂfld) ↔ (ℂfld ∈ DivRing ∧ ℚ ∈ (SubRing‘ℂfld) ∧ (ℂfld ↾s ℚ) ∈ DivRing))
17	2, 14, 15, 16	mpbir3an 1342	. . . . . 6 ⊢ ℚ ∈ (SubDRing‘ℂfld)
18	17	a1i 11	. . . . 5 ⊢ (⊤ → ℚ ∈ (SubDRing‘ℂfld))
19	1, 3, 18	fldgenidfld 33281	. . . 4 ⊢ (⊤ → (ℂfld fldGen ℚ) = ℚ)
20	12, 19	sseqtrd 3971	. . 3 ⊢ (⊤ → (ℂfld fldGen {1}) ⊆ ℚ)
21		elq 12848	. . . . . 6 ⊢ (𝑧 ∈ ℚ ↔ ∃𝑝 ∈ ℤ ∃𝑞 ∈ ℕ 𝑧 = (𝑝 / 𝑞))
22		cnflddiv 21338	. . . . . . . . 9 ⊢ / = (/r‘ℂfld)
23		cnfld0 21330	. . . . . . . . 9 ⊢ 0 = (0g‘ℂfld)
24	11, 4	sstrdi 3947	. . . . . . . . . . . 12 ⊢ (⊤ → {1} ⊆ ℂ)
25	1, 3, 24	fldgensdrg 33278	. . . . . . . . . . 11 ⊢ (⊤ → (ℂfld fldGen {1}) ∈ (SubDRing‘ℂfld))
26	25	mptru 1548	. . . . . . . . . 10 ⊢ (ℂfld fldGen {1}) ∈ (SubDRing‘ℂfld)
27	26	a1i 11	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → (ℂfld fldGen {1}) ∈ (SubDRing‘ℂfld))
28		ax-1cn 11064	. . . . . . . . . . . . 13 ⊢ 1 ∈ ℂ
29		cnfldmulg 21341	. . . . . . . . . . . . 13 ⊢ ((𝑝 ∈ ℤ ∧ 1 ∈ ℂ) → (𝑝(.g‘ℂfld)1) = (𝑝 · 1))
30	28, 29	mpan2 691	. . . . . . . . . . . 12 ⊢ (𝑝 ∈ ℤ → (𝑝(.g‘ℂfld)1) = (𝑝 · 1))
31		zre 12472	. . . . . . . . . . . . 13 ⊢ (𝑝 ∈ ℤ → 𝑝 ∈ ℝ)
32		ax-1rid 11076	. . . . . . . . . . . . 13 ⊢ (𝑝 ∈ ℝ → (𝑝 · 1) = 𝑝)
33	31, 32	syl 17	. . . . . . . . . . . 12 ⊢ (𝑝 ∈ ℤ → (𝑝 · 1) = 𝑝)
34	30, 33	eqtrd 2766	. . . . . . . . . . 11 ⊢ (𝑝 ∈ ℤ → (𝑝(.g‘ℂfld)1) = 𝑝)
35		issdrg 20704	. . . . . . . . . . . . . . 15 ⊢ ((ℂfld fldGen {1}) ∈ (SubDRing‘ℂfld) ↔ (ℂfld ∈ DivRing ∧ (ℂfld fldGen {1}) ∈ (SubRing‘ℂfld) ∧ (ℂfld ↾s (ℂfld fldGen {1})) ∈ DivRing))
36	26, 35	mpbi 230	. . . . . . . . . . . . . 14 ⊢ (ℂfld ∈ DivRing ∧ (ℂfld fldGen {1}) ∈ (SubRing‘ℂfld) ∧ (ℂfld ↾s (ℂfld fldGen {1})) ∈ DivRing)
37	36	simp2i 1140	. . . . . . . . . . . . 13 ⊢ (ℂfld fldGen {1}) ∈ (SubRing‘ℂfld)
38		subrgsubg 20493	. . . . . . . . . . . . 13 ⊢ ((ℂfld fldGen {1}) ∈ (SubRing‘ℂfld) → (ℂfld fldGen {1}) ∈ (SubGrp‘ℂfld))
39	37, 38	ax-mp 5	. . . . . . . . . . . 12 ⊢ (ℂfld fldGen {1}) ∈ (SubGrp‘ℂfld)
40	1, 3, 24	fldgenssid 33277	. . . . . . . . . . . . . 14 ⊢ (⊤ → {1} ⊆ (ℂfld fldGen {1}))
41		1ex 11108	. . . . . . . . . . . . . . 15 ⊢ 1 ∈ V
42	41	snss 4737	. . . . . . . . . . . . . 14 ⊢ (1 ∈ (ℂfld fldGen {1}) ↔ {1} ⊆ (ℂfld fldGen {1}))
43	40, 42	sylibr 234	. . . . . . . . . . . . 13 ⊢ (⊤ → 1 ∈ (ℂfld fldGen {1}))
44	43	mptru 1548	. . . . . . . . . . . 12 ⊢ 1 ∈ (ℂfld fldGen {1})
45		eqid 2731	. . . . . . . . . . . . 13 ⊢ (.g‘ℂfld) = (.g‘ℂfld)
46	45	subgmulgcl 19052	. . . . . . . . . . . 12 ⊢ (((ℂfld fldGen {1}) ∈ (SubGrp‘ℂfld) ∧ 𝑝 ∈ ℤ ∧ 1 ∈ (ℂfld fldGen {1})) → (𝑝(.g‘ℂfld)1) ∈ (ℂfld fldGen {1}))
47	39, 44, 46	mp3an13 1454	. . . . . . . . . . 11 ⊢ (𝑝 ∈ ℤ → (𝑝(.g‘ℂfld)1) ∈ (ℂfld fldGen {1}))
48	34, 47	eqeltrrd 2832	. . . . . . . . . 10 ⊢ (𝑝 ∈ ℤ → 𝑝 ∈ (ℂfld fldGen {1}))
49	48	adantr 480	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑝 ∈ (ℂfld fldGen {1}))
50	48	ssriv 3938	. . . . . . . . . 10 ⊢ ℤ ⊆ (ℂfld fldGen {1})
51		nnz 12489	. . . . . . . . . . 11 ⊢ (𝑞 ∈ ℕ → 𝑞 ∈ ℤ)
52	51	adantl 481	. . . . . . . . . 10 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑞 ∈ ℤ)
53	50, 52	sselid 3932	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑞 ∈ (ℂfld fldGen {1}))
54		nnne0 12159	. . . . . . . . . 10 ⊢ (𝑞 ∈ ℕ → 𝑞 ≠ 0)
55	54	adantl 481	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑞 ≠ 0)
56	22, 23, 27, 49, 53, 55	sdrgdvcl 33263	. . . . . . . 8 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → (𝑝 / 𝑞) ∈ (ℂfld fldGen {1}))
57		eleq1 2819	. . . . . . . 8 ⊢ (𝑧 = (𝑝 / 𝑞) → (𝑧 ∈ (ℂfld fldGen {1}) ↔ (𝑝 / 𝑞) ∈ (ℂfld fldGen {1})))
58	56, 57	syl5ibrcom 247	. . . . . . 7 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → (𝑧 = (𝑝 / 𝑞) → 𝑧 ∈ (ℂfld fldGen {1})))
59	58	rexlimivv 3174	. . . . . 6 ⊢ (∃𝑝 ∈ ℤ ∃𝑞 ∈ ℕ 𝑧 = (𝑝 / 𝑞) → 𝑧 ∈ (ℂfld fldGen {1}))
60	21, 59	sylbi 217	. . . . 5 ⊢ (𝑧 ∈ ℚ → 𝑧 ∈ (ℂfld fldGen {1}))
61	60	ssriv 3938	. . . 4 ⊢ ℚ ⊆ (ℂfld fldGen {1})
62	61	a1i 11	. . 3 ⊢ (⊤ → ℚ ⊆ (ℂfld fldGen {1}))
63	20, 62	eqssd 3952	. 2 ⊢ (⊤ → (ℂfld fldGen {1}) = ℚ)
64	63	mptru 1548	1 ⊢ (ℂfld fldGen {1}) = ℚ

Syntax hints:   ∧ wa 395   ∧ w3a 1086   = wceq 1541  ⊤wtru 1542   ∈ wcel 2111   ≠ wne 2928  ∃wrex 3056   ⊆ wss 3902  {csn 4576  ‘cfv 6481  (class class class)co 7346  ℂcc 11004  ℝcr 11005  0cc0 11006  1c1 11007   · cmul 11011   / cdiv 11774  ℕcn 12125  ℤcz 12468  ℚcq 12846   ↾_s cress 17141  ._gcmg 18980  SubGrpcsubg 19033  SubRingcsubrg 20485  DivRingcdr 20645  SubDRingcsdrg 20702  ℂ_fldccnfld 21292   fldGen cfldgen 33274

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2113  ax-9 2121  ax-10 2144  ax-11 2160  ax-12 2180  ax-ext 2703  ax-rep 5217  ax-sep 5234  ax-nul 5244  ax-pow 5303  ax-pr 5370  ax-un 7668  ax-cnex 11062  ax-resscn 11063  ax-1cn 11064  ax-icn 11065  ax-addcl 11066  ax-addrcl 11067  ax-mulcl 11068  ax-mulrcl 11069  ax-mulcom 11070  ax-addass 11071  ax-mulass 11072  ax-distr 11073  ax-i2m1 11074  ax-1ne0 11075  ax-1rid 11076  ax-rnegex 11077  ax-rrecex 11078  ax-cnre 11079  ax-pre-lttri 11080  ax-pre-lttrn 11081  ax-pre-ltadd 11082  ax-pre-mulgt0 11083  ax-addf 11085

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2535  df-eu 2564  df-clab 2710  df-cleq 2723  df-clel 2806  df-nfc 2881  df-ne 2929  df-nel 3033  df-ral 3048  df-rex 3057  df-rmo 3346  df-reu 3347  df-rab 3396  df-v 3438  df-sbc 3742  df-csb 3851  df-dif 3905  df-un 3907  df-in 3909  df-ss 3919  df-pss 3922  df-nul 4284  df-if 4476  df-pw 4552  df-sn 4577  df-pr 4579  df-tp 4581  df-op 4583  df-uni 4860  df-int 4898  df-iun 4943  df-iin 4944  df-br 5092  df-opab 5154  df-mpt 5173  df-tr 5199  df-id 5511  df-eprel 5516  df-po 5524  df-so 5525  df-fr 5569  df-we 5571  df-xp 5622  df-rel 5623  df-cnv 5624  df-co 5625  df-dm 5626  df-rn 5627  df-res 5628  df-ima 5629  df-pred 6248  df-ord 6309  df-on 6310  df-lim 6311  df-suc 6312  df-iota 6437  df-fun 6483  df-fn 6484  df-f 6485  df-f1 6486  df-fo 6487  df-f1o 6488  df-fv 6489  df-riota 7303  df-ov 7349  df-oprab 7350  df-mpo 7351  df-om 7797  df-1st 7921  df-2nd 7922  df-tpos 8156  df-frecs 8211  df-wrecs 8242  df-recs 8291  df-rdg 8329  df-1o 8385  df-er 8622  df-en 8870  df-dom 8871  df-sdom 8872  df-fin 8873  df-pnf 11148  df-mnf 11149  df-xr 11150  df-ltxr 11151  df-le 11152  df-sub 11346  df-neg 11347  df-div 11775  df-nn 12126  df-2 12188  df-3 12189  df-4 12190  df-5 12191  df-6 12192  df-7 12193  df-8 12194  df-9 12195  df-n0 12382  df-z 12469  df-dec 12589  df-uz 12733  df-q 12847  df-fz 13408  df-seq 13909  df-struct 17058  df-sets 17075  df-slot 17093  df-ndx 17105  df-base 17121  df-ress 17142  df-plusg 17174  df-mulr 17175  df-starv 17176  df-tset 17180  df-ple 17181  df-ds 17183  df-unif 17184  df-0g 17345  df-mgm 18548  df-sgrp 18627  df-mnd 18643  df-grp 18849  df-minusg 18850  df-mulg 18981  df-subg 19036  df-cmn 19695  df-abl 19696  df-mgp 20060  df-rng 20072  df-ur 20101  df-ring 20154  df-cring 20155  df-oppr 20256  df-dvdsr 20276  df-unit 20277  df-invr 20307  df-dvr 20320  df-subrng 20462  df-subrg 20486  df-drng 20647  df-sdrg 20703  df-cnfld 21293  df-fldgen 33275

This theorem is referenced by: (None)