Theorem 1fldgenq 33274

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 21283	. . . . 5 ⊢ ℂ = (Base‘ℂfld)
2		cndrng 21323	. . . . . 6 ⊢ ℂfld ∈ DivRing
3	2	a1i 11	. . . . 5 ⊢ (⊤ → ℂfld ∈ DivRing)
4		qsscn 12879	. . . . . 6 ⊢ ℚ ⊆ ℂ
5	4	a1i 11	. . . . 5 ⊢ (⊤ → ℚ ⊆ ℂ)
6		1z 12523	. . . . . . . 8 ⊢ 1 ∈ ℤ
7		snssi 4762	. . . . . . . 8 ⊢ (1 ∈ ℤ → {1} ⊆ ℤ)
8	6, 7	ax-mp 5	. . . . . . 7 ⊢ {1} ⊆ ℤ
9		zssq 12875	. . . . . . 7 ⊢ ℤ ⊆ ℚ
10	8, 9	sstri 3947	. . . . . 6 ⊢ {1} ⊆ ℚ
11	10	a1i 11	. . . . 5 ⊢ (⊤ → {1} ⊆ ℚ)
12	1, 3, 5, 11	fldgenss 33268	. . . 4 ⊢ (⊤ → (ℂfld fldGen {1}) ⊆ (ℂfld fldGen ℚ))
13		qsubdrg 21344	. . . . . . . 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 20691	. . . . . . 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 33269	. . . 4 ⊢ (⊤ → (ℂfld fldGen ℚ) = ℚ)
20	12, 19	sseqtrd 3974	. . 3 ⊢ (⊤ → (ℂfld fldGen {1}) ⊆ ℚ)
21		elq 12869	. . . . . 6 ⊢ (𝑧 ∈ ℚ ↔ ∃𝑝 ∈ ℤ ∃𝑞 ∈ ℕ 𝑧 = (𝑝 / 𝑞))
22		cnflddiv 21325	. . . . . . . . 9 ⊢ / = (/r‘ℂfld)
23		cnfld0 21317	. . . . . . . . 9 ⊢ 0 = (0g‘ℂfld)
24	11, 4	sstrdi 3950	. . . . . . . . . . . 12 ⊢ (⊤ → {1} ⊆ ℂ)
25	1, 3, 24	fldgensdrg 33266	. . . . . . . . . . 11 ⊢ (⊤ → (ℂfld fldGen {1}) ∈ (SubDRing‘ℂfld))
26	25	mptru 1547	. . . . . . . . . 10 ⊢ (ℂfld fldGen {1}) ∈ (SubDRing‘ℂfld)
27	26	a1i 11	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → (ℂfld fldGen {1}) ∈ (SubDRing‘ℂfld))
28		ax-1cn 11086	. . . . . . . . . . . . 13 ⊢ 1 ∈ ℂ
29		cnfldmulg 21328	. . . . . . . . . . . . 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 12493	. . . . . . . . . . . . 13 ⊢ (𝑝 ∈ ℤ → 𝑝 ∈ ℝ)
32		ax-1rid 11098	. . . . . . . . . . . . 13 ⊢ (𝑝 ∈ ℝ → (𝑝 · 1) = 𝑝)
33	31, 32	syl 17	. . . . . . . . . . . 12 ⊢ (𝑝 ∈ ℤ → (𝑝 · 1) = 𝑝)
34	30, 33	eqtrd 2764	. . . . . . . . . . 11 ⊢ (𝑝 ∈ ℤ → (𝑝(.g‘ℂfld)1) = 𝑝)
35		issdrg 20691	. . . . . . . . . . . . . . 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 20480	. . . . . . . . . . . . 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 33265	. . . . . . . . . . . . . 14 ⊢ (⊤ → {1} ⊆ (ℂfld fldGen {1}))
41		1ex 11130	. . . . . . . . . . . . . . 15 ⊢ 1 ∈ V
42	41	snss 4739	. . . . . . . . . . . . . 14 ⊢ (1 ∈ (ℂfld fldGen {1}) ↔ {1} ⊆ (ℂfld fldGen {1}))
43	40, 42	sylibr 234	. . . . . . . . . . . . 13 ⊢ (⊤ → 1 ∈ (ℂfld fldGen {1}))
44	43	mptru 1547	. . . . . . . . . . . 12 ⊢ 1 ∈ (ℂfld fldGen {1})
45		eqid 2729	. . . . . . . . . . . . 13 ⊢ (.g‘ℂfld) = (.g‘ℂfld)
46	45	subgmulgcl 19036	. . . . . . . . . . . 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 2829	. . . . . . . . . 10 ⊢ (𝑝 ∈ ℤ → 𝑝 ∈ (ℂfld fldGen {1}))
49	48	adantr 480	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑝 ∈ (ℂfld fldGen {1}))
50	48	ssriv 3941	. . . . . . . . . 10 ⊢ ℤ ⊆ (ℂfld fldGen {1})
51		nnz 12510	. . . . . . . . . . 11 ⊢ (𝑞 ∈ ℕ → 𝑞 ∈ ℤ)
52	51	adantl 481	. . . . . . . . . 10 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑞 ∈ ℤ)
53	50, 52	sselid 3935	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑞 ∈ (ℂfld fldGen {1}))
54		nnne0 12180	. . . . . . . . . 10 ⊢ (𝑞 ∈ ℕ → 𝑞 ≠ 0)
55	54	adantl 481	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → 𝑞 ≠ 0)
56	22, 23, 27, 49, 53, 55	sdrgdvcl 33251	. . . . . . . 8 ⊢ ((𝑝 ∈ ℤ ∧ 𝑞 ∈ ℕ) → (𝑝 / 𝑞) ∈ (ℂfld fldGen {1}))
57		eleq1 2816	. . . . . . . 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 3171	. . . . . 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 3941	. . . 4 ⊢ ℚ ⊆ (ℂfld fldGen {1})
62	61	a1i 11	. . 3 ⊢ (⊤ → ℚ ⊆ (ℂfld fldGen {1}))
63	20, 62	eqssd 3955	. 2 ⊢ (⊤ → (ℂfld fldGen {1}) = ℚ)
64	63	mptru 1547	1 ⊢ (ℂfld fldGen {1}) = ℚ

Syntax hints:   ∧ wa 395   ∧ w3a 1086   = wceq 1540  ⊤wtru 1541   ∈ wcel 2109   ≠ wne 2925  ∃wrex 3053   ⊆ wss 3905  {csn 4579  ‘cfv 6486  (class class class)co 7353  ℂcc 11026  ℝcr 11027  0cc0 11028  1c1 11029   · cmul 11033   / cdiv 11795  ℕcn 12146  ℤcz 12489  ℚcq 12867   ↾_s cress 17159  ._gcmg 18964  SubGrpcsubg 19017  SubRingcsubrg 20472  DivRingcdr 20632  SubDRingcsdrg 20689  ℂ_fldccnfld 21279   fldGen cfldgen 33262

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-rep 5221  ax-sep 5238  ax-nul 5248  ax-pow 5307  ax-pr 5374  ax-un 7675  ax-cnex 11084  ax-resscn 11085  ax-1cn 11086  ax-icn 11087  ax-addcl 11088  ax-addrcl 11089  ax-mulcl 11090  ax-mulrcl 11091  ax-mulcom 11092  ax-addass 11093  ax-mulass 11094  ax-distr 11095  ax-i2m1 11096  ax-1ne0 11097  ax-1rid 11098  ax-rnegex 11099  ax-rrecex 11100  ax-cnre 11101  ax-pre-lttri 11102  ax-pre-lttrn 11103  ax-pre-ltadd 11104  ax-pre-mulgt0 11105  ax-addf 11107

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-nel 3030  df-ral 3045  df-rex 3054  df-rmo 3345  df-reu 3346  df-rab 3397  df-v 3440  df-sbc 3745  df-csb 3854  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-pss 3925  df-nul 4287  df-if 4479  df-pw 4555  df-sn 4580  df-pr 4582  df-tp 4584  df-op 4586  df-uni 4862  df-int 4900  df-iun 4946  df-iin 4947  df-br 5096  df-opab 5158  df-mpt 5177  df-tr 5203  df-id 5518  df-eprel 5523  df-po 5531  df-so 5532  df-fr 5576  df-we 5578  df-xp 5629  df-rel 5630  df-cnv 5631  df-co 5632  df-dm 5633  df-rn 5634  df-res 5635  df-ima 5636  df-pred 6253  df-ord 6314  df-on 6315  df-lim 6316  df-suc 6317  df-iota 6442  df-fun 6488  df-fn 6489  df-f 6490  df-f1 6491  df-fo 6492  df-f1o 6493  df-fv 6494  df-riota 7310  df-ov 7356  df-oprab 7357  df-mpo 7358  df-om 7807  df-1st 7931  df-2nd 7932  df-tpos 8166  df-frecs 8221  df-wrecs 8252  df-recs 8301  df-rdg 8339  df-1o 8395  df-er 8632  df-en 8880  df-dom 8881  df-sdom 8882  df-fin 8883  df-pnf 11170  df-mnf 11171  df-xr 11172  df-ltxr 11173  df-le 11174  df-sub 11367  df-neg 11368  df-div 11796  df-nn 12147  df-2 12209  df-3 12210  df-4 12211  df-5 12212  df-6 12213  df-7 12214  df-8 12215  df-9 12216  df-n0 12403  df-z 12490  df-dec 12610  df-uz 12754  df-q 12868  df-fz 13429  df-seq 13927  df-struct 17076  df-sets 17093  df-slot 17111  df-ndx 17123  df-base 17139  df-ress 17160  df-plusg 17192  df-mulr 17193  df-starv 17194  df-tset 17198  df-ple 17199  df-ds 17201  df-unif 17202  df-0g 17363  df-mgm 18532  df-sgrp 18611  df-mnd 18627  df-grp 18833  df-minusg 18834  df-mulg 18965  df-subg 19020  df-cmn 19679  df-abl 19680  df-mgp 20044  df-rng 20056  df-ur 20085  df-ring 20138  df-cring 20139  df-oppr 20240  df-dvdsr 20260  df-unit 20261  df-invr 20291  df-dvr 20304  df-subrng 20449  df-subrg 20473  df-drng 20634  df-sdrg 20690  df-cnfld 21280  df-fldgen 33263

This theorem is referenced by: (None)