Theorem 1fldgenq 33404

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 21313	. . . . 5 ⊢ ℂ = (Base‘ℂfld)
2		cndrng 21353	. . . . . 6 ⊢ ℂfld ∈ DivRing
3	2	a1i 11	. . . . 5 ⊢ (⊤ → ℂfld ∈ DivRing)
4		qsscn 12873	. . . . . 6 ⊢ ℚ ⊆ ℂ
5	4	a1i 11	. . . . 5 ⊢ (⊤ → ℚ ⊆ ℂ)
6		1z 12521	. . . . . . . 8 ⊢ 1 ∈ ℤ
7		snssi 4764	. . . . . . . 8 ⊢ (1 ∈ ℤ → {1} ⊆ ℤ)
8	6, 7	ax-mp 5	. . . . . . 7 ⊢ {1} ⊆ ℤ
9		zssq 12869	. . . . . . 7 ⊢ ℤ ⊆ ℚ
10	8, 9	sstri 3943	. . . . . 6 ⊢ {1} ⊆ ℚ
11	10	a1i 11	. . . . 5 ⊢ (⊤ → {1} ⊆ ℚ)
12	1, 3, 5, 11	fldgenss 33398	. . . 4 ⊢ (⊤ → (ℂfld fldGen {1}) ⊆ (ℂfld fldGen ℚ))
13		qsubdrg 21374	. . . . . . . 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 20721	. . . . . . 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 33399	. . . 4 ⊢ (⊤ → (ℂfld fldGen ℚ) = ℚ)
20	12, 19	sseqtrd 3970	. . 3 ⊢ (⊤ → (ℂfld fldGen {1}) ⊆ ℚ)
21		elq 12863	. . . . . 6 ⊢ (𝑧 ∈ ℚ ↔ ∃𝑝 ∈ ℤ ∃𝑞 ∈ ℕ 𝑧 = (𝑝 / 𝑞))
22		cnflddiv 21355	. . . . . . . . 9 ⊢ / = (/r‘ℂfld)
23		cnfld0 21347	. . . . . . . . 9 ⊢ 0 = (0g‘ℂfld)
24	11, 4	sstrdi 3946	. . . . . . . . . . . 12 ⊢ (⊤ → {1} ⊆ ℂ)
25	1, 3, 24	fldgensdrg 33396	. . . . . . . . . . 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 11084	. . . . . . . . . . . . 13 ⊢ 1 ∈ ℂ
29		cnfldmulg 21358	. . . . . . . . . . . . 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 12492	. . . . . . . . . . . . 13 ⊢ (𝑝 ∈ ℤ → 𝑝 ∈ ℝ)
32		ax-1rid 11096	. . . . . . . . . . . . 13 ⊢ (𝑝 ∈ ℝ → (𝑝 · 1) = 𝑝)
33	31, 32	syl 17	. . . . . . . . . . . 12 ⊢ (𝑝 ∈ ℤ → (𝑝 · 1) = 𝑝)
34	30, 33	eqtrd 2771	. . . . . . . . . . 11 ⊢ (𝑝 ∈ ℤ → (𝑝(.g‘ℂfld)1) = 𝑝)
35		issdrg 20721	. . . . . . . . . . . . . . 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 20510	. . . . . . . . . . . . 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 33395	. . . . . . . . . . . . . 14 ⊢ (⊤ → {1} ⊆ (ℂfld fldGen {1}))
41		1ex 11128	. . . . . . . . . . . . . . 15 ⊢ 1 ∈ V
42	41	snss 4741	. . . . . . . . . . . . . 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 2736	. . . . . . . . . . . . 13 ⊢ (.g‘ℂfld) = (.g‘ℂfld)
46	45	subgmulgcl 19069	. . . . . . . . . . . 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 2837	. . . . . . . . . 10 ⊢ (𝑝 ∈ ℤ → 𝑝 ∈ (ℂfld fldGen {1}))
49	48	adantr 480	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑝 ∈ (ℂfld fldGen {1}))
50	48	ssriv 3937	. . . . . . . . . 10 ⊢ ℤ ⊆ (ℂfld fldGen {1})
51		nnz 12509	. . . . . . . . . . 11 ⊢ (𝑞 ∈ ℕ → 𝑞 ∈ ℤ)
52	51	adantl 481	. . . . . . . . . 10 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑞 ∈ ℤ)
53	50, 52	sselid 3931	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑞 ∈ (ℂfld fldGen {1}))
54		nnne0 12179	. . . . . . . . . 10 ⊢ (𝑞 ∈ ℕ → 𝑞 ≠ 0)
55	54	adantl 481	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑞 ≠ 0)
56	22, 23, 27, 49, 53, 55	sdrgdvcl 33381	. . . . . . . 8 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → (𝑝 / 𝑞) ∈ (ℂfld fldGen {1}))
57		eleq1 2824	. . . . . . . 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 3178	. . . . . 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 3937	. . . 4 ⊢ ℚ ⊆ (ℂfld fldGen {1})
62	61	a1i 11	. . 3 ⊢ (⊤ → ℚ ⊆ (ℂfld fldGen {1}))
63	20, 62	eqssd 3951	. 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 2932  ∃wrex 3060   ⊆ wss 3901  {csn 4580  ‘cfv 6492  (class class class)co 7358  ℂcc 11024  ℝcr 11025  0cc0 11026  1c1 11027   · cmul 11031   / cdiv 11794  ℕcn 12145  ℤcz 12488  ℚcq 12861   ↾_s cress 17157  ._gcmg 18997  SubGrpcsubg 19050  SubRingcsubrg 20502  DivRingcdr 20662  SubDRingcsdrg 20719  ℂ_fldccnfld 21309   fldGen cfldgen 33392

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 2184  ax-ext 2708  ax-rep 5224  ax-sep 5241  ax-nul 5251  ax-pow 5310  ax-pr 5377  ax-un 7680  ax-cnex 11082  ax-resscn 11083  ax-1cn 11084  ax-icn 11085  ax-addcl 11086  ax-addrcl 11087  ax-mulcl 11088  ax-mulrcl 11089  ax-mulcom 11090  ax-addass 11091  ax-mulass 11092  ax-distr 11093  ax-i2m1 11094  ax-1ne0 11095  ax-1rid 11096  ax-rnegex 11097  ax-rrecex 11098  ax-cnre 11099  ax-pre-lttri 11100  ax-pre-lttrn 11101  ax-pre-ltadd 11102  ax-pre-mulgt0 11103  ax-addf 11105

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 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-nfc 2885  df-ne 2933  df-nel 3037  df-ral 3052  df-rex 3061  df-rmo 3350  df-reu 3351  df-rab 3400  df-v 3442  df-sbc 3741  df-csb 3850  df-dif 3904  df-un 3906  df-in 3908  df-ss 3918  df-pss 3921  df-nul 4286  df-if 4480  df-pw 4556  df-sn 4581  df-pr 4583  df-tp 4585  df-op 4587  df-uni 4864  df-int 4903  df-iun 4948  df-iin 4949  df-br 5099  df-opab 5161  df-mpt 5180  df-tr 5206  df-id 5519  df-eprel 5524  df-po 5532  df-so 5533  df-fr 5577  df-we 5579  df-xp 5630  df-rel 5631  df-cnv 5632  df-co 5633  df-dm 5634  df-rn 5635  df-res 5636  df-ima 5637  df-pred 6259  df-ord 6320  df-on 6321  df-lim 6322  df-suc 6323  df-iota 6448  df-fun 6494  df-fn 6495  df-f 6496  df-f1 6497  df-fo 6498  df-f1o 6499  df-fv 6500  df-riota 7315  df-ov 7361  df-oprab 7362  df-mpo 7363  df-om 7809  df-1st 7933  df-2nd 7934  df-tpos 8168  df-frecs 8223  df-wrecs 8254  df-recs 8303  df-rdg 8341  df-1o 8397  df-er 8635  df-en 8884  df-dom 8885  df-sdom 8886  df-fin 8887  df-pnf 11168  df-mnf 11169  df-xr 11170  df-ltxr 11171  df-le 11172  df-sub 11366  df-neg 11367  df-div 11795  df-nn 12146  df-2 12208  df-3 12209  df-4 12210  df-5 12211  df-6 12212  df-7 12213  df-8 12214  df-9 12215  df-n0 12402  df-z 12489  df-dec 12608  df-uz 12752  df-q 12862  df-fz 13424  df-seq 13925  df-struct 17074  df-sets 17091  df-slot 17109  df-ndx 17121  df-base 17137  df-ress 17158  df-plusg 17190  df-mulr 17191  df-starv 17192  df-tset 17196  df-ple 17197  df-ds 17199  df-unif 17200  df-0g 17361  df-mgm 18565  df-sgrp 18644  df-mnd 18660  df-grp 18866  df-minusg 18867  df-mulg 18998  df-subg 19053  df-cmn 19711  df-abl 19712  df-mgp 20076  df-rng 20088  df-ur 20117  df-ring 20170  df-cring 20171  df-oppr 20273  df-dvdsr 20293  df-unit 20294  df-invr 20324  df-dvr 20337  df-subrng 20479  df-subrg 20503  df-drng 20664  df-sdrg 20720  df-cnfld 21310  df-fldgen 33393

This theorem is referenced by: (None)