Theorem 1fldgenq 33332

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 21304	. . . . 5 ⊢ ℂ = (Base‘ℂfld)
2		cndrng 21344	. . . . . 6 ⊢ ℂfld ∈ DivRing
3	2	a1i 11	. . . . 5 ⊢ (⊤ → ℂfld ∈ DivRing)
4		qsscn 12864	. . . . . 6 ⊢ ℚ ⊆ ℂ
5	4	a1i 11	. . . . 5 ⊢ (⊤ → ℚ ⊆ ℂ)
6		1z 12512	. . . . . . . 8 ⊢ 1 ∈ ℤ
7		snssi 4761	. . . . . . . 8 ⊢ (1 ∈ ℤ → {1} ⊆ ℤ)
8	6, 7	ax-mp 5	. . . . . . 7 ⊢ {1} ⊆ ℤ
9		zssq 12860	. . . . . . 7 ⊢ ℤ ⊆ ℚ
10	8, 9	sstri 3940	. . . . . 6 ⊢ {1} ⊆ ℚ
11	10	a1i 11	. . . . 5 ⊢ (⊤ → {1} ⊆ ℚ)
12	1, 3, 5, 11	fldgenss 33326	. . . 4 ⊢ (⊤ → (ℂfld fldGen {1}) ⊆ (ℂfld fldGen ℚ))
13		qsubdrg 21365	. . . . . . . 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 20712	. . . . . . 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 33327	. . . 4 ⊢ (⊤ → (ℂfld fldGen ℚ) = ℚ)
20	12, 19	sseqtrd 3967	. . 3 ⊢ (⊤ → (ℂfld fldGen {1}) ⊆ ℚ)
21		elq 12854	. . . . . 6 ⊢ (𝑧 ∈ ℚ ↔ ∃𝑝 ∈ ℤ ∃𝑞 ∈ ℕ 𝑧 = (𝑝 / 𝑞))
22		cnflddiv 21346	. . . . . . . . 9 ⊢ / = (/r‘ℂfld)
23		cnfld0 21338	. . . . . . . . 9 ⊢ 0 = (0g‘ℂfld)
24	11, 4	sstrdi 3943	. . . . . . . . . . . 12 ⊢ (⊤ → {1} ⊆ ℂ)
25	1, 3, 24	fldgensdrg 33324	. . . . . . . . . . 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 11075	. . . . . . . . . . . . 13 ⊢ 1 ∈ ℂ
29		cnfldmulg 21349	. . . . . . . . . . . . 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 12483	. . . . . . . . . . . . 13 ⊢ (𝑝 ∈ ℤ → 𝑝 ∈ ℝ)
32		ax-1rid 11087	. . . . . . . . . . . . 13 ⊢ (𝑝 ∈ ℝ → (𝑝 · 1) = 𝑝)
33	31, 32	syl 17	. . . . . . . . . . . 12 ⊢ (𝑝 ∈ ℤ → (𝑝 · 1) = 𝑝)
34	30, 33	eqtrd 2768	. . . . . . . . . . 11 ⊢ (𝑝 ∈ ℤ → (𝑝(.g‘ℂfld)1) = 𝑝)
35		issdrg 20712	. . . . . . . . . . . . . . 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 20501	. . . . . . . . . . . . 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 33323	. . . . . . . . . . . . . 14 ⊢ (⊤ → {1} ⊆ (ℂfld fldGen {1}))
41		1ex 11119	. . . . . . . . . . . . . . 15 ⊢ 1 ∈ V
42	41	snss 4738	. . . . . . . . . . . . . 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 2733	. . . . . . . . . . . . 13 ⊢ (.g‘ℂfld) = (.g‘ℂfld)
46	45	subgmulgcl 19060	. . . . . . . . . . . 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 2834	. . . . . . . . . 10 ⊢ (𝑝 ∈ ℤ → 𝑝 ∈ (ℂfld fldGen {1}))
49	48	adantr 480	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑝 ∈ (ℂfld fldGen {1}))
50	48	ssriv 3934	. . . . . . . . . 10 ⊢ ℤ ⊆ (ℂfld fldGen {1})
51		nnz 12500	. . . . . . . . . . 11 ⊢ (𝑞 ∈ ℕ → 𝑞 ∈ ℤ)
52	51	adantl 481	. . . . . . . . . 10 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑞 ∈ ℤ)
53	50, 52	sselid 3928	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑞 ∈ (ℂfld fldGen {1}))
54		nnne0 12170	. . . . . . . . . 10 ⊢ (𝑞 ∈ ℕ → 𝑞 ≠ 0)
55	54	adantl 481	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑞 ≠ 0)
56	22, 23, 27, 49, 53, 55	sdrgdvcl 33309	. . . . . . . 8 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → (𝑝 / 𝑞) ∈ (ℂfld fldGen {1}))
57		eleq1 2821	. . . . . . . 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 3175	. . . . . 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 3934	. . . 4 ⊢ ℚ ⊆ (ℂfld fldGen {1})
62	61	a1i 11	. . 3 ⊢ (⊤ → ℚ ⊆ (ℂfld fldGen {1}))
63	20, 62	eqssd 3948	. 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 2113   ≠ wne 2929  ∃wrex 3057   ⊆ wss 3898  {csn 4577  ‘cfv 6489  (class class class)co 7355  ℂcc 11015  ℝcr 11016  0cc0 11017  1c1 11018   · cmul 11022   / cdiv 11785  ℕcn 12136  ℤcz 12479  ℚcq 12852   ↾_s cress 17148  ._gcmg 18988  SubGrpcsubg 19041  SubRingcsubrg 20493  DivRingcdr 20653  SubDRingcsdrg 20710  ℂ_fldccnfld 21300   fldGen cfldgen 33320

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 2115  ax-9 2123  ax-10 2146  ax-11 2162  ax-12 2182  ax-ext 2705  ax-rep 5221  ax-sep 5238  ax-nul 5248  ax-pow 5307  ax-pr 5374  ax-un 7677  ax-cnex 11073  ax-resscn 11074  ax-1cn 11075  ax-icn 11076  ax-addcl 11077  ax-addrcl 11078  ax-mulcl 11079  ax-mulrcl 11080  ax-mulcom 11081  ax-addass 11082  ax-mulass 11083  ax-distr 11084  ax-i2m1 11085  ax-1ne0 11086  ax-1rid 11087  ax-rnegex 11088  ax-rrecex 11089  ax-cnre 11090  ax-pre-lttri 11091  ax-pre-lttrn 11092  ax-pre-ltadd 11093  ax-pre-mulgt0 11094  ax-addf 11096

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 2537  df-eu 2566  df-clab 2712  df-cleq 2725  df-clel 2808  df-nfc 2882  df-ne 2930  df-nel 3034  df-ral 3049  df-rex 3058  df-rmo 3347  df-reu 3348  df-rab 3397  df-v 3439  df-sbc 3738  df-csb 3847  df-dif 3901  df-un 3903  df-in 3905  df-ss 3915  df-pss 3918  df-nul 4283  df-if 4477  df-pw 4553  df-sn 4578  df-pr 4580  df-tp 4582  df-op 4584  df-uni 4861  df-int 4900  df-iun 4945  df-iin 4946  df-br 5096  df-opab 5158  df-mpt 5177  df-tr 5203  df-id 5516  df-eprel 5521  df-po 5529  df-so 5530  df-fr 5574  df-we 5576  df-xp 5627  df-rel 5628  df-cnv 5629  df-co 5630  df-dm 5631  df-rn 5632  df-res 5633  df-ima 5634  df-pred 6256  df-ord 6317  df-on 6318  df-lim 6319  df-suc 6320  df-iota 6445  df-fun 6491  df-fn 6492  df-f 6493  df-f1 6494  df-fo 6495  df-f1o 6496  df-fv 6497  df-riota 7312  df-ov 7358  df-oprab 7359  df-mpo 7360  df-om 7806  df-1st 7930  df-2nd 7931  df-tpos 8165  df-frecs 8220  df-wrecs 8251  df-recs 8300  df-rdg 8338  df-1o 8394  df-er 8631  df-en 8880  df-dom 8881  df-sdom 8882  df-fin 8883  df-pnf 11159  df-mnf 11160  df-xr 11161  df-ltxr 11162  df-le 11163  df-sub 11357  df-neg 11358  df-div 11786  df-nn 12137  df-2 12199  df-3 12200  df-4 12201  df-5 12202  df-6 12203  df-7 12204  df-8 12205  df-9 12206  df-n0 12393  df-z 12480  df-dec 12599  df-uz 12743  df-q 12853  df-fz 13415  df-seq 13916  df-struct 17065  df-sets 17082  df-slot 17100  df-ndx 17112  df-base 17128  df-ress 17149  df-plusg 17181  df-mulr 17182  df-starv 17183  df-tset 17187  df-ple 17188  df-ds 17190  df-unif 17191  df-0g 17352  df-mgm 18556  df-sgrp 18635  df-mnd 18651  df-grp 18857  df-minusg 18858  df-mulg 18989  df-subg 19044  df-cmn 19702  df-abl 19703  df-mgp 20067  df-rng 20079  df-ur 20108  df-ring 20161  df-cring 20162  df-oppr 20264  df-dvdsr 20284  df-unit 20285  df-invr 20315  df-dvr 20328  df-subrng 20470  df-subrg 20494  df-drng 20655  df-sdrg 20711  df-cnfld 21301  df-fldgen 33321

This theorem is referenced by: (None)