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Theorem cos9thpiminply 33894
Description: The polynomial ((𝑋↑3) + ((-3 · 𝑋) + 1)) is the minimal polynomial for 𝐴 over , and its degree is 3. (Contributed by Thierry Arnoux, 14-Nov-2025.)
Hypotheses
Ref Expression
cos9thpiminplylem3.1 𝑂 = (exp‘((i · (2 · π)) / 3))
cos9thpiminplylem4.2 𝑍 = (𝑂𝑐(1 / 3))
cos9thpiminplylem5.3 𝐴 = (𝑍 + (1 / 𝑍))
cos9thpiminply.q 𝑄 = (ℂflds ℚ)
cos9thpiminply.4 + = (+g𝑃)
cos9thpiminply.5 · = (.r𝑃)
cos9thpiminply.6 = (.g‘(mulGrp‘𝑃))
cos9thpiminply.p 𝑃 = (Poly1𝑄)
cos9thpiminply.k 𝐾 = (algSc‘𝑃)
cos9thpiminply.x 𝑋 = (var1𝑄)
cos9thpiminply.d 𝐷 = (deg1𝑄)
cos9thpiminply.f 𝐹 = ((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1)))
cos9thpiminply.m 𝑀 = (ℂfld minPoly ℚ)
Assertion
Ref Expression
cos9thpiminply (𝐹 = (𝑀𝐴) ∧ (𝐷𝐹) = 3)

Proof of Theorem cos9thpiminply
Dummy variables 𝑖 𝑥 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqid 2734 . . . 4 (ℂfld evalSub1 ℚ) = (ℂfld evalSub1 ℚ)
2 cos9thpiminply.p . . . . 5 𝑃 = (Poly1𝑄)
3 cos9thpiminply.q . . . . . 6 𝑄 = (ℂflds ℚ)
43fveq2i 6835 . . . . 5 (Poly1𝑄) = (Poly1‘(ℂflds ℚ))
52, 4eqtri 2757 . . . 4 𝑃 = (Poly1‘(ℂflds ℚ))
6 cnfldbas 21311 . . . 4 ℂ = (Base‘ℂfld)
7 cnfldfld 33372 . . . . 5 fld ∈ Field
87a1i 11 . . . 4 (⊤ → ℂfld ∈ Field)
9 cndrng 21351 . . . . . 6 fld ∈ DivRing
10 qsubdrg 21372 . . . . . . 7 (ℚ ∈ (SubRing‘ℂfld) ∧ (ℂflds ℚ) ∈ DivRing)
1110simpli 483 . . . . . 6 ℚ ∈ (SubRing‘ℂfld)
1210simpri 485 . . . . . 6 (ℂflds ℚ) ∈ DivRing
13 issdrg 20719 . . . . . 6 (ℚ ∈ (SubDRing‘ℂfld) ↔ (ℂfld ∈ DivRing ∧ ℚ ∈ (SubRing‘ℂfld) ∧ (ℂflds ℚ) ∈ DivRing))
149, 11, 12, 13mpbir3an 1342 . . . . 5 ℚ ∈ (SubDRing‘ℂfld)
1514a1i 11 . . . 4 (⊤ → ℚ ∈ (SubDRing‘ℂfld))
16 cos9thpiminplylem5.3 . . . . 5 𝐴 = (𝑍 + (1 / 𝑍))
17 cos9thpiminplylem4.2 . . . . . . 7 𝑍 = (𝑂𝑐(1 / 3))
18 cos9thpiminplylem3.1 . . . . . . . . 9 𝑂 = (exp‘((i · (2 · π)) / 3))
19 ax-icn 11083 . . . . . . . . . . . . 13 i ∈ ℂ
2019a1i 11 . . . . . . . . . . . 12 (⊤ → i ∈ ℂ)
21 2cnd 12221 . . . . . . . . . . . . 13 (⊤ → 2 ∈ ℂ)
22 picn 26421 . . . . . . . . . . . . . 14 π ∈ ℂ
2322a1i 11 . . . . . . . . . . . . 13 (⊤ → π ∈ ℂ)
2421, 23mulcld 11150 . . . . . . . . . . . 12 (⊤ → (2 · π) ∈ ℂ)
2520, 24mulcld 11150 . . . . . . . . . . 11 (⊤ → (i · (2 · π)) ∈ ℂ)
26 3cn 12224 . . . . . . . . . . . 12 3 ∈ ℂ
2726a1i 11 . . . . . . . . . . 11 (⊤ → 3 ∈ ℂ)
28 3ne0 12249 . . . . . . . . . . . 12 3 ≠ 0
2928a1i 11 . . . . . . . . . . 11 (⊤ → 3 ≠ 0)
3025, 27, 29divcld 11915 . . . . . . . . . 10 (⊤ → ((i · (2 · π)) / 3) ∈ ℂ)
3130efcld 16004 . . . . . . . . 9 (⊤ → (exp‘((i · (2 · π)) / 3)) ∈ ℂ)
3218, 31eqeltrid 2838 . . . . . . . 8 (⊤ → 𝑂 ∈ ℂ)
3327, 29reccld 11908 . . . . . . . 8 (⊤ → (1 / 3) ∈ ℂ)
3432, 33cxpcld 26671 . . . . . . 7 (⊤ → (𝑂𝑐(1 / 3)) ∈ ℂ)
3517, 34eqeltrid 2838 . . . . . 6 (⊤ → 𝑍 ∈ ℂ)
3617a1i 11 . . . . . . . 8 (⊤ → 𝑍 = (𝑂𝑐(1 / 3)))
3718a1i 11 . . . . . . . . . 10 (⊤ → 𝑂 = (exp‘((i · (2 · π)) / 3)))
3830efne0d 16018 . . . . . . . . . 10 (⊤ → (exp‘((i · (2 · π)) / 3)) ≠ 0)
3937, 38eqnetrd 2997 . . . . . . . . 9 (⊤ → 𝑂 ≠ 0)
4032, 39, 33cxpne0d 26676 . . . . . . . 8 (⊤ → (𝑂𝑐(1 / 3)) ≠ 0)
4136, 40eqnetrd 2997 . . . . . . 7 (⊤ → 𝑍 ≠ 0)
4235, 41reccld 11908 . . . . . 6 (⊤ → (1 / 𝑍) ∈ ℂ)
4335, 42addcld 11149 . . . . 5 (⊤ → (𝑍 + (1 / 𝑍)) ∈ ℂ)
4416, 43eqeltrid 2838 . . . 4 (⊤ → 𝐴 ∈ ℂ)
45 cnfld0 21345 . . . 4 0 = (0g‘ℂfld)
46 cos9thpiminply.m . . . 4 𝑀 = (ℂfld minPoly ℚ)
47 eqid 2734 . . . 4 (0g𝑃) = (0g𝑃)
48 cos9thpiminply.4 . . . . . 6 + = (+g𝑃)
49 cos9thpiminply.5 . . . . . 6 · = (.r𝑃)
50 cos9thpiminply.6 . . . . . 6 = (.g‘(mulGrp‘𝑃))
51 cos9thpiminply.k . . . . . 6 𝐾 = (algSc‘𝑃)
52 cos9thpiminply.x . . . . . 6 𝑋 = (var1𝑄)
53 cos9thpiminply.d . . . . . 6 𝐷 = (deg1𝑄)
54 cos9thpiminply.f . . . . . 6 𝐹 = ((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1)))
5518, 17, 16, 3, 48, 49, 50, 2, 51, 52, 53, 54, 44cos9thpiminplylem6 33893 . . . . 5 (⊤ → (((ℂfld evalSub1 ℚ)‘𝐹)‘𝐴) = ((𝐴↑3) + ((-3 · 𝐴) + 1)))
5618, 17, 16cos9thpiminplylem5 33892 . . . . 5 ((𝐴↑3) + ((-3 · 𝐴) + 1)) = 0
5755, 56eqtrdi 2785 . . . 4 (⊤ → (((ℂfld evalSub1 ℚ)‘𝐹)‘𝐴) = 0)
583qrng0 27586 . . . . 5 0 = (0g𝑄)
59 eqid 2734 . . . . 5 (eval1𝑄) = (eval1𝑄)
60 eqid 2734 . . . . 5 (Base‘𝑃) = (Base‘𝑃)
613qfld 33328 . . . . . 6 𝑄 ∈ Field
6261a1i 11 . . . . 5 (⊤ → 𝑄 ∈ Field)
633qdrng 27585 . . . . . . . . . . 11 𝑄 ∈ DivRing
6463a1i 11 . . . . . . . . . 10 (⊤ → 𝑄 ∈ DivRing)
6564drngringd 20668 . . . . . . . . 9 (⊤ → 𝑄 ∈ Ring)
662ply1ring 22186 . . . . . . . . 9 (𝑄 ∈ Ring → 𝑃 ∈ Ring)
6765, 66syl 17 . . . . . . . 8 (⊤ → 𝑃 ∈ Ring)
6867ringgrpd 20175 . . . . . . 7 (⊤ → 𝑃 ∈ Grp)
69 eqid 2734 . . . . . . . . 9 (mulGrp‘𝑃) = (mulGrp‘𝑃)
7069, 60mgpbas 20078 . . . . . . . 8 (Base‘𝑃) = (Base‘(mulGrp‘𝑃))
7169ringmgp 20172 . . . . . . . . 9 (𝑃 ∈ Ring → (mulGrp‘𝑃) ∈ Mnd)
7267, 71syl 17 . . . . . . . 8 (⊤ → (mulGrp‘𝑃) ∈ Mnd)
73 3nn0 12417 . . . . . . . . 9 3 ∈ ℕ0
7473a1i 11 . . . . . . . 8 (⊤ → 3 ∈ ℕ0)
7552, 2, 60vr1cl 22156 . . . . . . . . 9 (𝑄 ∈ Ring → 𝑋 ∈ (Base‘𝑃))
7665, 75syl 17 . . . . . . . 8 (⊤ → 𝑋 ∈ (Base‘𝑃))
7770, 50, 72, 74, 76mulgnn0cld 19023 . . . . . . 7 (⊤ → (3 𝑋) ∈ (Base‘𝑃))
782ply1sca 22191 . . . . . . . . . . . 12 (𝑄 ∈ DivRing → 𝑄 = (Scalar‘𝑃))
7963, 78ax-mp 5 . . . . . . . . . . 11 𝑄 = (Scalar‘𝑃)
802ply1lmod 22190 . . . . . . . . . . . 12 (𝑄 ∈ Ring → 𝑃 ∈ LMod)
8165, 80syl 17 . . . . . . . . . . 11 (⊤ → 𝑃 ∈ LMod)
823qrngbas 27584 . . . . . . . . . . 11 ℚ = (Base‘𝑄)
8351, 79, 67, 81, 82, 60asclf 21835 . . . . . . . . . 10 (⊤ → 𝐾:ℚ⟶(Base‘𝑃))
8474nn0zd 12511 . . . . . . . . . . 11 (⊤ → 3 ∈ ℤ)
85 zq 12865 . . . . . . . . . . 11 (3 ∈ ℤ → 3 ∈ ℚ)
86 qnegcl 12877 . . . . . . . . . . 11 (3 ∈ ℚ → -3 ∈ ℚ)
8784, 85, 863syl 18 . . . . . . . . . 10 (⊤ → -3 ∈ ℚ)
8883, 87ffvelcdmd 7028 . . . . . . . . 9 (⊤ → (𝐾‘-3) ∈ (Base‘𝑃))
8960, 49, 67, 88, 76ringcld 20193 . . . . . . . 8 (⊤ → ((𝐾‘-3) · 𝑋) ∈ (Base‘𝑃))
90 1zzd 12520 . . . . . . . . . 10 (⊤ → 1 ∈ ℤ)
91 zq 12865 . . . . . . . . . 10 (1 ∈ ℤ → 1 ∈ ℚ)
9290, 91syl 17 . . . . . . . . 9 (⊤ → 1 ∈ ℚ)
9383, 92ffvelcdmd 7028 . . . . . . . 8 (⊤ → (𝐾‘1) ∈ (Base‘𝑃))
9460, 48, 68, 89, 93grpcld 18875 . . . . . . 7 (⊤ → (((𝐾‘-3) · 𝑋) + (𝐾‘1)) ∈ (Base‘𝑃))
9560, 48, 68, 77, 94grpcld 18875 . . . . . 6 (⊤ → ((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1))) ∈ (Base‘𝑃))
9654, 95eqeltrid 2838 . . . . 5 (⊤ → 𝐹 ∈ (Base‘𝑃))
9762fldcrngd 20673 . . . . . . . . 9 (⊤ → 𝑄 ∈ CRing)
9859, 2, 60, 97, 82, 96evl1fvf 33593 . . . . . . . 8 (⊤ → ((eval1𝑄)‘𝐹):ℚ⟶ℚ)
9998ffnd 6661 . . . . . . 7 (⊤ → ((eval1𝑄)‘𝐹) Fn ℚ)
100 fniniseg2 7005 . . . . . . 7 (((eval1𝑄)‘𝐹) Fn ℚ → (((eval1𝑄)‘𝐹) “ {0}) = {𝑥 ∈ ℚ ∣ (((eval1𝑄)‘𝐹)‘𝑥) = 0})
10199, 100syl 17 . . . . . 6 (⊤ → (((eval1𝑄)‘𝐹) “ {0}) = {𝑥 ∈ ℚ ∣ (((eval1𝑄)‘𝐹)‘𝑥) = 0})
10259, 82evl1fval1 22273 . . . . . . . . . . . . . . 15 (eval1𝑄) = (𝑄 evalSub1 ℚ)
103102a1i 11 . . . . . . . . . . . . . 14 (𝑥 ∈ ℚ → (eval1𝑄) = (𝑄 evalSub1 ℚ))
104103fveq1d 6834 . . . . . . . . . . . . 13 (𝑥 ∈ ℚ → ((eval1𝑄)‘𝐹) = ((𝑄 evalSub1 ℚ)‘𝐹))
105104fveq1d 6834 . . . . . . . . . . . 12 (𝑥 ∈ ℚ → (((eval1𝑄)‘𝐹)‘𝑥) = (((𝑄 evalSub1 ℚ)‘𝐹)‘𝑥))
106 eqid 2734 . . . . . . . . . . . . . . 15 (𝑄 evalSub1 ℚ) = (𝑄 evalSub1 ℚ)
107 cncrng 21341 . . . . . . . . . . . . . . . 16 fld ∈ CRing
108107a1i 11 . . . . . . . . . . . . . . 15 (𝑥 ∈ ℚ → ℂfld ∈ CRing)
10911a1i 11 . . . . . . . . . . . . . . 15 (𝑥 ∈ ℚ → ℚ ∈ (SubRing‘ℂfld))
11097mptru 1548 . . . . . . . . . . . . . . . . . 18 𝑄 ∈ CRing
111110a1i 11 . . . . . . . . . . . . . . . . 17 (𝑥 ∈ ℚ → 𝑄 ∈ CRing)
112111crngringd 20179 . . . . . . . . . . . . . . . 16 (𝑥 ∈ ℚ → 𝑄 ∈ Ring)
11382subrgid 20504 . . . . . . . . . . . . . . . 16 (𝑄 ∈ Ring → ℚ ∈ (SubRing‘𝑄))
114112, 113syl 17 . . . . . . . . . . . . . . 15 (𝑥 ∈ ℚ → ℚ ∈ (SubRing‘𝑄))
11596mptru 1548 . . . . . . . . . . . . . . . 16 𝐹 ∈ (Base‘𝑃)
116115a1i 11 . . . . . . . . . . . . . . 15 (𝑥 ∈ ℚ → 𝐹 ∈ (Base‘𝑃))
1173, 1, 106, 2, 3, 60, 108, 109, 114, 116ressply1evls1 33595 . . . . . . . . . . . . . 14 (𝑥 ∈ ℚ → ((𝑄 evalSub1 ℚ)‘𝐹) = (((ℂfld evalSub1 ℚ)‘𝐹) ↾ ℚ))
118117fveq1d 6834 . . . . . . . . . . . . 13 (𝑥 ∈ ℚ → (((𝑄 evalSub1 ℚ)‘𝐹)‘𝑥) = ((((ℂfld evalSub1 ℚ)‘𝐹) ↾ ℚ)‘𝑥))
119 fvres 6851 . . . . . . . . . . . . 13 (𝑥 ∈ ℚ → ((((ℂfld evalSub1 ℚ)‘𝐹) ↾ ℚ)‘𝑥) = (((ℂfld evalSub1 ℚ)‘𝐹)‘𝑥))
120118, 119eqtr2d 2770 . . . . . . . . . . . 12 (𝑥 ∈ ℚ → (((ℂfld evalSub1 ℚ)‘𝐹)‘𝑥) = (((𝑄 evalSub1 ℚ)‘𝐹)‘𝑥))
121 qcn 12874 . . . . . . . . . . . . 13 (𝑥 ∈ ℚ → 𝑥 ∈ ℂ)
12218, 17, 16, 3, 48, 49, 50, 2, 51, 52, 53, 54, 121cos9thpiminplylem6 33893 . . . . . . . . . . . 12 (𝑥 ∈ ℚ → (((ℂfld evalSub1 ℚ)‘𝐹)‘𝑥) = ((𝑥↑3) + ((-3 · 𝑥) + 1)))
123105, 120, 1223eqtr2d 2775 . . . . . . . . . . 11 (𝑥 ∈ ℚ → (((eval1𝑄)‘𝐹)‘𝑥) = ((𝑥↑3) + ((-3 · 𝑥) + 1)))
124 id 22 . . . . . . . . . . . 12 (𝑥 ∈ ℚ → 𝑥 ∈ ℚ)
125124cos9thpiminplylem2 33889 . . . . . . . . . . 11 (𝑥 ∈ ℚ → ((𝑥↑3) + ((-3 · 𝑥) + 1)) ≠ 0)
126123, 125eqnetrd 2997 . . . . . . . . . 10 (𝑥 ∈ ℚ → (((eval1𝑄)‘𝐹)‘𝑥) ≠ 0)
127126neneqd 2935 . . . . . . . . 9 (𝑥 ∈ ℚ → ¬ (((eval1𝑄)‘𝐹)‘𝑥) = 0)
128127rgen 3051 . . . . . . . 8 𝑥 ∈ ℚ ¬ (((eval1𝑄)‘𝐹)‘𝑥) = 0
129128a1i 11 . . . . . . 7 (⊤ → ∀𝑥 ∈ ℚ ¬ (((eval1𝑄)‘𝐹)‘𝑥) = 0)
130 rabeq0 4338 . . . . . . 7 ({𝑥 ∈ ℚ ∣ (((eval1𝑄)‘𝐹)‘𝑥) = 0} = ∅ ↔ ∀𝑥 ∈ ℚ ¬ (((eval1𝑄)‘𝐹)‘𝑥) = 0)
131129, 130sylibr 234 . . . . . 6 (⊤ → {𝑥 ∈ ℚ ∣ (((eval1𝑄)‘𝐹)‘𝑥) = 0} = ∅)
132101, 131eqtrd 2769 . . . . 5 (⊤ → (((eval1𝑄)‘𝐹) “ {0}) = ∅)
13354a1i 11 . . . . . . 7 (⊤ → 𝐹 = ((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1))))
134133fveq2d 6836 . . . . . 6 (⊤ → (𝐷𝐹) = (𝐷‘((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1)))))
135 1lt3 12311 . . . . . . . . 9 1 < 3
136135a1i 11 . . . . . . . 8 (⊤ → 1 < 3)
137 0lt1 11657 . . . . . . . . . . . 12 0 < 1
138137a1i 11 . . . . . . . . . . 11 (⊤ → 0 < 1)
139138gt0ne0d 11699 . . . . . . . . . . . 12 (⊤ → 1 ≠ 0)
14053, 2, 82, 51, 58deg1scl 26072 . . . . . . . . . . . 12 ((𝑄 ∈ Ring ∧ 1 ∈ ℚ ∧ 1 ≠ 0) → (𝐷‘(𝐾‘1)) = 0)
14165, 92, 139, 140syl3anc 1373 . . . . . . . . . . 11 (⊤ → (𝐷‘(𝐾‘1)) = 0)
142 drngdomn 20680 . . . . . . . . . . . . . 14 (𝑄 ∈ DivRing → 𝑄 ∈ Domn)
14363, 142mp1i 13 . . . . . . . . . . . . 13 (⊤ → 𝑄 ∈ Domn)
14427, 29negne0d 11488 . . . . . . . . . . . . . 14 (⊤ → -3 ≠ 0)
1452, 51, 58, 47, 82ply1scln0 22232 . . . . . . . . . . . . . 14 ((𝑄 ∈ Ring ∧ -3 ∈ ℚ ∧ -3 ≠ 0) → (𝐾‘-3) ≠ (0g𝑃))
14665, 87, 144, 145syl3anc 1373 . . . . . . . . . . . . 13 (⊤ → (𝐾‘-3) ≠ (0g𝑃))
147107a1i 11 . . . . . . . . . . . . . 14 (⊤ → ℂfld ∈ CRing)
148 drngnzr 20679 . . . . . . . . . . . . . . 15 (ℂfld ∈ DivRing → ℂfld ∈ NzRing)
1499, 148mp1i 13 . . . . . . . . . . . . . 14 (⊤ → ℂfld ∈ NzRing)
15011a1i 11 . . . . . . . . . . . . . 14 (⊤ → ℚ ∈ (SubRing‘ℂfld))
15152, 47, 3, 2, 147, 149, 150vr1nz 33623 . . . . . . . . . . . . 13 (⊤ → 𝑋 ≠ (0g𝑃))
15253, 2, 60, 49, 47, 143, 88, 146, 76, 151deg1mul 26074 . . . . . . . . . . . 12 (⊤ → (𝐷‘((𝐾‘-3) · 𝑋)) = ((𝐷‘(𝐾‘-3)) + (𝐷𝑋)))
15353, 2, 82, 51, 58deg1scl 26072 . . . . . . . . . . . . . 14 ((𝑄 ∈ Ring ∧ -3 ∈ ℚ ∧ -3 ≠ 0) → (𝐷‘(𝐾‘-3)) = 0)
15465, 87, 144, 153syl3anc 1373 . . . . . . . . . . . . 13 (⊤ → (𝐷‘(𝐾‘-3)) = 0)
155 drngnzr 20679 . . . . . . . . . . . . . . 15 (𝑄 ∈ DivRing → 𝑄 ∈ NzRing)
15663, 155mp1i 13 . . . . . . . . . . . . . 14 (⊤ → 𝑄 ∈ NzRing)
15753, 2, 52, 156deg1vr 33622 . . . . . . . . . . . . 13 (⊤ → (𝐷𝑋) = 1)
158154, 157oveq12d 7374 . . . . . . . . . . . 12 (⊤ → ((𝐷‘(𝐾‘-3)) + (𝐷𝑋)) = (0 + 1))
159 1cnd 11125 . . . . . . . . . . . . 13 (⊤ → 1 ∈ ℂ)
160159addlidd 11332 . . . . . . . . . . . 12 (⊤ → (0 + 1) = 1)
161152, 158, 1603eqtrd 2773 . . . . . . . . . . 11 (⊤ → (𝐷‘((𝐾‘-3) · 𝑋)) = 1)
162138, 141, 1613brtr4d 5128 . . . . . . . . . 10 (⊤ → (𝐷‘(𝐾‘1)) < (𝐷‘((𝐾‘-3) · 𝑋)))
1632, 53, 65, 60, 48, 89, 93, 162deg1add 26062 . . . . . . . . 9 (⊤ → (𝐷‘(((𝐾‘-3) · 𝑋) + (𝐾‘1))) = (𝐷‘((𝐾‘-3) · 𝑋)))
164163, 161eqtrd 2769 . . . . . . . 8 (⊤ → (𝐷‘(((𝐾‘-3) · 𝑋) + (𝐾‘1))) = 1)
16553, 2, 52, 69, 50deg1pw 26080 . . . . . . . . 9 ((𝑄 ∈ NzRing ∧ 3 ∈ ℕ0) → (𝐷‘(3 𝑋)) = 3)
166156, 74, 165syl2anc 584 . . . . . . . 8 (⊤ → (𝐷‘(3 𝑋)) = 3)
167136, 164, 1663brtr4d 5128 . . . . . . 7 (⊤ → (𝐷‘(((𝐾‘-3) · 𝑋) + (𝐾‘1))) < (𝐷‘(3 𝑋)))
1682, 53, 65, 60, 48, 77, 94, 167deg1add 26062 . . . . . 6 (⊤ → (𝐷‘((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1)))) = (𝐷‘(3 𝑋)))
169134, 168, 1663eqtrd 2773 . . . . 5 (⊤ → (𝐷𝐹) = 3)
17058, 59, 53, 2, 60, 62, 96, 132, 169ply1dg3rt0irred 33614 . . . 4 (⊤ → 𝐹 ∈ (Irred‘𝑃))
171 eqid 2734 . . . . . . 7 (Irred‘𝑃) = (Irred‘𝑃)
172171, 47irredn0 20357 . . . . . 6 ((𝑃 ∈ Ring ∧ 𝐹 ∈ (Irred‘𝑃)) → 𝐹 ≠ (0g𝑃))
17367, 170, 172syl2anc 584 . . . . 5 (⊤ → 𝐹 ≠ (0g𝑃))
174169fveq2d 6836 . . . . . 6 (⊤ → ((coe1𝐹)‘(𝐷𝐹)) = ((coe1𝐹)‘3))
175133fveq2d 6836 . . . . . . . 8 (⊤ → (coe1𝐹) = (coe1‘((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1)))))
176175fveq1d 6834 . . . . . . 7 (⊤ → ((coe1𝐹)‘3) = ((coe1‘((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1))))‘3))
177 cnfldadd 21313 . . . . . . . . . . 11 + = (+g‘ℂfld)
1783, 177ressplusg 17209 . . . . . . . . . 10 (ℚ ∈ (SubRing‘ℂfld) → + = (+g𝑄))
17911, 178ax-mp 5 . . . . . . . . 9 + = (+g𝑄)
1802, 60, 48, 179coe1addfv 22205 . . . . . . . 8 (((𝑄 ∈ Ring ∧ (3 𝑋) ∈ (Base‘𝑃) ∧ (((𝐾‘-3) · 𝑋) + (𝐾‘1)) ∈ (Base‘𝑃)) ∧ 3 ∈ ℕ0) → ((coe1‘((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1))))‘3) = (((coe1‘(3 𝑋))‘3) + ((coe1‘(((𝐾‘-3) · 𝑋) + (𝐾‘1)))‘3)))
18165, 77, 94, 74, 180syl31anc 1375 . . . . . . 7 (⊤ → ((coe1‘((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1))))‘3) = (((coe1‘(3 𝑋))‘3) + ((coe1‘(((𝐾‘-3) · 𝑋) + (𝐾‘1)))‘3)))
182 iftrue 4483 . . . . . . . . . 10 (𝑖 = 3 → if(𝑖 = 3, 1, 0) = 1)
1833qrng1 27587 . . . . . . . . . . 11 1 = (1r𝑄)
1842, 52, 50, 65, 74, 58, 183coe1mon 33617 . . . . . . . . . 10 (⊤ → (coe1‘(3 𝑋)) = (𝑖 ∈ ℕ0 ↦ if(𝑖 = 3, 1, 0)))
185182, 184, 74, 159fvmptd4 6963 . . . . . . . . 9 (⊤ → ((coe1‘(3 𝑋))‘3) = 1)
1862, 60, 48, 179coe1addfv 22205 . . . . . . . . . . 11 (((𝑄 ∈ Ring ∧ ((𝐾‘-3) · 𝑋) ∈ (Base‘𝑃) ∧ (𝐾‘1) ∈ (Base‘𝑃)) ∧ 3 ∈ ℕ0) → ((coe1‘(((𝐾‘-3) · 𝑋) + (𝐾‘1)))‘3) = (((coe1‘((𝐾‘-3) · 𝑋))‘3) + ((coe1‘(𝐾‘1))‘3)))
18765, 89, 93, 74, 186syl31anc 1375 . . . . . . . . . 10 (⊤ → ((coe1‘(((𝐾‘-3) · 𝑋) + (𝐾‘1)))‘3) = (((coe1‘((𝐾‘-3) · 𝑋))‘3) + ((coe1‘(𝐾‘1))‘3)))
1882ply1assa 22138 . . . . . . . . . . . . . . . . 17 (𝑄 ∈ CRing → 𝑃 ∈ AssAlg)
18997, 188syl 17 . . . . . . . . . . . . . . . 16 (⊤ → 𝑃 ∈ AssAlg)
190 eqid 2734 . . . . . . . . . . . . . . . . 17 ( ·𝑠𝑃) = ( ·𝑠𝑃)
19151, 79, 82, 60, 49, 190asclmul1 21840 . . . . . . . . . . . . . . . 16 ((𝑃 ∈ AssAlg ∧ -3 ∈ ℚ ∧ 𝑋 ∈ (Base‘𝑃)) → ((𝐾‘-3) · 𝑋) = (-3( ·𝑠𝑃)𝑋))
192189, 87, 76, 191syl3anc 1373 . . . . . . . . . . . . . . 15 (⊤ → ((𝐾‘-3) · 𝑋) = (-3( ·𝑠𝑃)𝑋))
19370, 50mulg1 19009 . . . . . . . . . . . . . . . . 17 (𝑋 ∈ (Base‘𝑃) → (1 𝑋) = 𝑋)
19476, 193syl 17 . . . . . . . . . . . . . . . 16 (⊤ → (1 𝑋) = 𝑋)
195194oveq2d 7372 . . . . . . . . . . . . . . 15 (⊤ → (-3( ·𝑠𝑃)(1 𝑋)) = (-3( ·𝑠𝑃)𝑋))
196192, 195eqtr4d 2772 . . . . . . . . . . . . . 14 (⊤ → ((𝐾‘-3) · 𝑋) = (-3( ·𝑠𝑃)(1 𝑋)))
197196fveq2d 6836 . . . . . . . . . . . . 13 (⊤ → (coe1‘((𝐾‘-3) · 𝑋)) = (coe1‘(-3( ·𝑠𝑃)(1 𝑋))))
198197fveq1d 6834 . . . . . . . . . . . 12 (⊤ → ((coe1‘((𝐾‘-3) · 𝑋))‘3) = ((coe1‘(-3( ·𝑠𝑃)(1 𝑋)))‘3))
199 1nn0 12415 . . . . . . . . . . . . . 14 1 ∈ ℕ0
200199a1i 11 . . . . . . . . . . . . 13 (⊤ → 1 ∈ ℕ0)
201 1red 11131 . . . . . . . . . . . . . 14 (⊤ → 1 ∈ ℝ)
202201, 136ltned 11267 . . . . . . . . . . . . 13 (⊤ → 1 ≠ 3)
20358, 82, 2, 52, 190, 69, 50, 65, 87, 200, 74, 202coe1tmfv2 22215 . . . . . . . . . . . 12 (⊤ → ((coe1‘(-3( ·𝑠𝑃)(1 𝑋)))‘3) = 0)
204198, 203eqtrd 2769 . . . . . . . . . . 11 (⊤ → ((coe1‘((𝐾‘-3) · 𝑋))‘3) = 0)
2052, 51, 82, 58coe1scl 22227 . . . . . . . . . . . . 13 ((𝑄 ∈ Ring ∧ 1 ∈ ℚ) → (coe1‘(𝐾‘1)) = (𝑖 ∈ ℕ0 ↦ if(𝑖 = 0, 1, 0)))
20665, 92, 205syl2anc 584 . . . . . . . . . . . 12 (⊤ → (coe1‘(𝐾‘1)) = (𝑖 ∈ ℕ0 ↦ if(𝑖 = 0, 1, 0)))
207 simpr 484 . . . . . . . . . . . . . . 15 ((⊤ ∧ 𝑖 = 3) → 𝑖 = 3)
20828a1i 11 . . . . . . . . . . . . . . 15 ((⊤ ∧ 𝑖 = 3) → 3 ≠ 0)
209207, 208eqnetrd 2997 . . . . . . . . . . . . . 14 ((⊤ ∧ 𝑖 = 3) → 𝑖 ≠ 0)
210209neneqd 2935 . . . . . . . . . . . . 13 ((⊤ ∧ 𝑖 = 3) → ¬ 𝑖 = 0)
211210iffalsed 4488 . . . . . . . . . . . 12 ((⊤ ∧ 𝑖 = 3) → if(𝑖 = 0, 1, 0) = 0)
212 0zd 12498 . . . . . . . . . . . 12 (⊤ → 0 ∈ ℤ)
213206, 211, 74, 212fvmptd 6946 . . . . . . . . . . 11 (⊤ → ((coe1‘(𝐾‘1))‘3) = 0)
214204, 213oveq12d 7374 . . . . . . . . . 10 (⊤ → (((coe1‘((𝐾‘-3) · 𝑋))‘3) + ((coe1‘(𝐾‘1))‘3)) = (0 + 0))
215 00id 11306 . . . . . . . . . . 11 (0 + 0) = 0
216215a1i 11 . . . . . . . . . 10 (⊤ → (0 + 0) = 0)
217187, 214, 2163eqtrd 2773 . . . . . . . . 9 (⊤ → ((coe1‘(((𝐾‘-3) · 𝑋) + (𝐾‘1)))‘3) = 0)
218185, 217oveq12d 7374 . . . . . . . 8 (⊤ → (((coe1‘(3 𝑋))‘3) + ((coe1‘(((𝐾‘-3) · 𝑋) + (𝐾‘1)))‘3)) = (1 + 0))
219159addridd 11331 . . . . . . . 8 (⊤ → (1 + 0) = 1)
220218, 219eqtrd 2769 . . . . . . 7 (⊤ → (((coe1‘(3 𝑋))‘3) + ((coe1‘(((𝐾‘-3) · 𝑋) + (𝐾‘1)))‘3)) = 1)
221176, 181, 2203eqtrd 2773 . . . . . 6 (⊤ → ((coe1𝐹)‘3) = 1)
222174, 221eqtrd 2769 . . . . 5 (⊤ → ((coe1𝐹)‘(𝐷𝐹)) = 1)
2233fveq2i 6835 . . . . . . 7 (Monic1p𝑄) = (Monic1p‘(ℂflds ℚ))
224223eqcomi 2743 . . . . . 6 (Monic1p‘(ℂflds ℚ)) = (Monic1p𝑄)
2252, 60, 47, 53, 224, 183ismon1p 26102 . . . . 5 (𝐹 ∈ (Monic1p‘(ℂflds ℚ)) ↔ (𝐹 ∈ (Base‘𝑃) ∧ 𝐹 ≠ (0g𝑃) ∧ ((coe1𝐹)‘(𝐷𝐹)) = 1))
22696, 173, 222, 225syl3anbrc 1344 . . . 4 (⊤ → 𝐹 ∈ (Monic1p‘(ℂflds ℚ)))
2271, 5, 6, 8, 15, 44, 45, 46, 47, 57, 170, 226irredminply 33822 . . 3 (⊤ → 𝐹 = (𝑀𝐴))
228227, 169jca 511 . 2 (⊤ → (𝐹 = (𝑀𝐴) ∧ (𝐷𝐹) = 3))
229228mptru 1548 1 (𝐹 = (𝑀𝐴) ∧ (𝐷𝐹) = 3)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wa 395   = wceq 1541  wtru 1542  wcel 2113  wne 2930  wral 3049  {crab 3397  c0 4283  ifcif 4477  {csn 4578   class class class wbr 5096  cmpt 5177  ccnv 5621  cres 5624  cima 5625   Fn wfn 6485  cfv 6490  (class class class)co 7356  cc 11022  0cc0 11024  1c1 11025  ici 11026   + caddc 11027   · cmul 11029   < clt 11164  -cneg 11363   / cdiv 11792  2c2 12198  3c3 12199  0cn0 12399  cz 12486  cq 12859  cexp 13982  expce 15982  πcpi 15987  Basecbs 17134  s cress 17155  +gcplusg 17175  .rcmulr 17176  Scalarcsca 17178   ·𝑠 cvsca 17179  0gc0g 17357  Mndcmnd 18657  .gcmg 18995  mulGrpcmgp 20073  Ringcrg 20166  CRingccrg 20167  Irredcir 20290  NzRingcnzr 20443  SubRingcsubrg 20500  Domncdomn 20623  DivRingcdr 20660  Fieldcfield 20661  SubDRingcsdrg 20717  LModclmod 20809  fldccnfld 21307  AssAlgcasa 21803  algSccascl 21805  var1cv1 22114  Poly1cpl1 22115  coe1cco1 22116   evalSub1 ces1 22255  eval1ce1 22256  deg1cdg1 26013  Monic1pcmn1 26085  𝑐ccxp 26518   minPoly cminply 33805
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 2706  ax-rep 5222  ax-sep 5239  ax-nul 5249  ax-pow 5308  ax-pr 5375  ax-un 7678  ax-inf2 9548  ax-cnex 11080  ax-resscn 11081  ax-1cn 11082  ax-icn 11083  ax-addcl 11084  ax-addrcl 11085  ax-mulcl 11086  ax-mulrcl 11087  ax-mulcom 11088  ax-addass 11089  ax-mulass 11090  ax-distr 11091  ax-i2m1 11092  ax-1ne0 11093  ax-1rid 11094  ax-rnegex 11095  ax-rrecex 11096  ax-cnre 11097  ax-pre-lttri 11098  ax-pre-lttrn 11099  ax-pre-ltadd 11100  ax-pre-mulgt0 11101  ax-pre-sup 11102  ax-addf 11103  ax-mulf 11104
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 2567  df-clab 2713  df-cleq 2726  df-clel 2809  df-nfc 2883  df-ne 2931  df-nel 3035  df-ral 3050  df-rex 3059  df-rmo 3348  df-reu 3349  df-rab 3398  df-v 3440  df-sbc 3739  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-pss 3919  df-nul 4284  df-if 4478  df-pw 4554  df-sn 4579  df-pr 4581  df-tp 4583  df-op 4585  df-uni 4862  df-int 4901  df-iun 4946  df-iin 4947  df-br 5097  df-opab 5159  df-mpt 5178  df-tr 5204  df-id 5517  df-eprel 5522  df-po 5530  df-so 5531  df-fr 5575  df-se 5576  df-we 5577  df-xp 5628  df-rel 5629  df-cnv 5630  df-co 5631  df-dm 5632  df-rn 5633  df-res 5634  df-ima 5635  df-pred 6257  df-ord 6318  df-on 6319  df-lim 6320  df-suc 6321  df-iota 6446  df-fun 6492  df-fn 6493  df-f 6494  df-f1 6495  df-fo 6496  df-f1o 6497  df-fv 6498  df-isom 6499  df-riota 7313  df-ov 7359  df-oprab 7360  df-mpo 7361  df-of 7620  df-ofr 7621  df-om 7807  df-1st 7931  df-2nd 7932  df-supp 8101  df-tpos 8166  df-frecs 8221  df-wrecs 8252  df-recs 8301  df-rdg 8339  df-1o 8395  df-2o 8396  df-er 8633  df-map 8763  df-pm 8764  df-ixp 8834  df-en 8882  df-dom 8883  df-sdom 8884  df-fin 8885  df-fsupp 9263  df-fi 9312  df-sup 9343  df-inf 9344  df-oi 9413  df-card 9849  df-pnf 11166  df-mnf 11167  df-xr 11168  df-ltxr 11169  df-le 11170  df-sub 11364  df-neg 11365  df-div 11793  df-nn 12144  df-2 12206  df-3 12207  df-4 12208  df-5 12209  df-6 12210  df-7 12211  df-8 12212  df-9 12213  df-n0 12400  df-z 12487  df-dec 12606  df-uz 12750  df-q 12860  df-rp 12904  df-xneg 13024  df-xadd 13025  df-xmul 13026  df-ioo 13263  df-ioc 13264  df-ico 13265  df-icc 13266  df-fz 13422  df-fzo 13569  df-fl 13710  df-mod 13788  df-seq 13923  df-exp 13983  df-fac 14195  df-bc 14224  df-hash 14252  df-shft 14988  df-sgn 15008  df-cj 15020  df-re 15021  df-im 15022  df-sqrt 15156  df-abs 15157  df-limsup 15392  df-clim 15409  df-rlim 15410  df-sum 15608  df-ef 15988  df-sin 15990  df-cos 15991  df-pi 15993  df-dvds 16178  df-gcd 16420  df-prm 16597  df-struct 17072  df-sets 17089  df-slot 17107  df-ndx 17119  df-base 17135  df-ress 17156  df-plusg 17188  df-mulr 17189  df-starv 17190  df-sca 17191  df-vsca 17192  df-ip 17193  df-tset 17194  df-ple 17195  df-ds 17197  df-unif 17198  df-hom 17199  df-cco 17200  df-rest 17340  df-topn 17341  df-0g 17359  df-gsum 17360  df-topgen 17361  df-pt 17362  df-prds 17365  df-pws 17367  df-xrs 17421  df-qtop 17426  df-imas 17427  df-xps 17429  df-mre 17503  df-mrc 17504  df-acs 17506  df-mgm 18563  df-sgrp 18642  df-mnd 18658  df-mhm 18706  df-submnd 18707  df-grp 18864  df-minusg 18865  df-sbg 18866  df-mulg 18996  df-subg 19051  df-ghm 19140  df-cntz 19244  df-cmn 19709  df-abl 19710  df-mgp 20074  df-rng 20086  df-ur 20115  df-srg 20120  df-ring 20168  df-cring 20169  df-oppr 20271  df-dvdsr 20291  df-unit 20292  df-irred 20293  df-invr 20322  df-dvr 20335  df-rhm 20406  df-nzr 20444  df-subrng 20477  df-subrg 20501  df-rlreg 20625  df-domn 20626  df-idom 20627  df-drng 20662  df-field 20663  df-sdrg 20718  df-lmod 20811  df-lss 20881  df-lsp 20921  df-sra 21123  df-rgmod 21124  df-lidl 21161  df-rsp 21162  df-psmet 21299  df-xmet 21300  df-met 21301  df-bl 21302  df-mopn 21303  df-fbas 21304  df-fg 21305  df-cnfld 21308  df-assa 21806  df-asp 21807  df-ascl 21808  df-psr 21863  df-mvr 21864  df-mpl 21865  df-opsr 21867  df-evls 22027  df-evl 22028  df-psr1 22118  df-vr1 22119  df-ply1 22120  df-coe1 22121  df-evls1 22257  df-evl1 22258  df-top 22836  df-topon 22853  df-topsp 22875  df-bases 22888  df-cld 22961  df-ntr 22962  df-cls 22963  df-nei 23040  df-lp 23078  df-perf 23079  df-cn 23169  df-cnp 23170  df-haus 23257  df-tx 23504  df-hmeo 23697  df-fil 23788  df-fm 23880  df-flim 23881  df-flf 23882  df-xms 24262  df-ms 24263  df-tms 24264  df-cncf 24825  df-limc 25821  df-dv 25822  df-mdeg 26014  df-deg1 26015  df-mon1 26090  df-uc1p 26091  df-q1p 26092  df-r1p 26093  df-ig1p 26094  df-log 26519  df-cxp 26520  df-irng 33790  df-minply 33806
This theorem is referenced by:  cos9thpinconstrlem2  33896
  Copyright terms: Public domain W3C validator