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Theorem cos9thpiminply 33932
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 2736 . . . 4 (ℂfld evalSub1 ℚ) = (ℂfld evalSub1 ℚ)
2 cos9thpiminply.p . . . . 5 𝑃 = (Poly1𝑄)
3 cos9thpiminply.q . . . . . 6 𝑄 = (ℂflds ℚ)
43fveq2i 6843 . . . . 5 (Poly1𝑄) = (Poly1‘(ℂflds ℚ))
52, 4eqtri 2759 . . . 4 𝑃 = (Poly1‘(ℂflds ℚ))
6 cnfldbas 21356 . . . 4 ℂ = (Base‘ℂfld)
7 cnfldfld 33402 . . . . 5 fld ∈ Field
87a1i 11 . . . 4 (⊤ → ℂfld ∈ Field)
9 cndrng 21381 . . . . . 6 fld ∈ DivRing
10 qsubdrg 21399 . . . . . . 7 (ℚ ∈ (SubRing‘ℂfld) ∧ (ℂflds ℚ) ∈ DivRing)
1110simpli 483 . . . . . 6 ℚ ∈ (SubRing‘ℂfld)
1210simpri 485 . . . . . 6 (ℂflds ℚ) ∈ DivRing
13 issdrg 20765 . . . . . 6 (ℚ ∈ (SubDRing‘ℂfld) ↔ (ℂfld ∈ DivRing ∧ ℚ ∈ (SubRing‘ℂfld) ∧ (ℂflds ℚ) ∈ DivRing))
149, 11, 12, 13mpbir3an 1343 . . . . 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 11097 . . . . . . . . . . . . 13 i ∈ ℂ
2019a1i 11 . . . . . . . . . . . 12 (⊤ → i ∈ ℂ)
21 2cnd 12259 . . . . . . . . . . . . 13 (⊤ → 2 ∈ ℂ)
22 picn 26422 . . . . . . . . . . . . . 14 π ∈ ℂ
2322a1i 11 . . . . . . . . . . . . 13 (⊤ → π ∈ ℂ)
2421, 23mulcld 11165 . . . . . . . . . . . 12 (⊤ → (2 · π) ∈ ℂ)
2520, 24mulcld 11165 . . . . . . . . . . 11 (⊤ → (i · (2 · π)) ∈ ℂ)
26 3cn 12262 . . . . . . . . . . . 12 3 ∈ ℂ
2726a1i 11 . . . . . . . . . . 11 (⊤ → 3 ∈ ℂ)
28 3ne0 12287 . . . . . . . . . . . 12 3 ≠ 0
2928a1i 11 . . . . . . . . . . 11 (⊤ → 3 ≠ 0)
3025, 27, 29divcld 11931 . . . . . . . . . 10 (⊤ → ((i · (2 · π)) / 3) ∈ ℂ)
3130efcld 16048 . . . . . . . . 9 (⊤ → (exp‘((i · (2 · π)) / 3)) ∈ ℂ)
3218, 31eqeltrid 2840 . . . . . . . 8 (⊤ → 𝑂 ∈ ℂ)
3327, 29reccld 11924 . . . . . . . 8 (⊤ → (1 / 3) ∈ ℂ)
3432, 33cxpcld 26672 . . . . . . 7 (⊤ → (𝑂𝑐(1 / 3)) ∈ ℂ)
3517, 34eqeltrid 2840 . . . . . 6 (⊤ → 𝑍 ∈ ℂ)
3617a1i 11 . . . . . . . 8 (⊤ → 𝑍 = (𝑂𝑐(1 / 3)))
3718a1i 11 . . . . . . . . . 10 (⊤ → 𝑂 = (exp‘((i · (2 · π)) / 3)))
3830efne0d 16062 . . . . . . . . . 10 (⊤ → (exp‘((i · (2 · π)) / 3)) ≠ 0)
3937, 38eqnetrd 2999 . . . . . . . . 9 (⊤ → 𝑂 ≠ 0)
4032, 39, 33cxpne0d 26677 . . . . . . . 8 (⊤ → (𝑂𝑐(1 / 3)) ≠ 0)
4136, 40eqnetrd 2999 . . . . . . 7 (⊤ → 𝑍 ≠ 0)
4235, 41reccld 11924 . . . . . 6 (⊤ → (1 / 𝑍) ∈ ℂ)
4335, 42addcld 11164 . . . . 5 (⊤ → (𝑍 + (1 / 𝑍)) ∈ ℂ)
4416, 43eqeltrid 2840 . . . 4 (⊤ → 𝐴 ∈ ℂ)
45 cnfld0 21376 . . . 4 0 = (0g‘ℂfld)
46 cos9thpiminply.m . . . 4 𝑀 = (ℂfld minPoly ℚ)
47 eqid 2736 . . . 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 33931 . . . . 5 (⊤ → (((ℂfld evalSub1 ℚ)‘𝐹)‘𝐴) = ((𝐴↑3) + ((-3 · 𝐴) + 1)))
5618, 17, 16cos9thpiminplylem5 33930 . . . . 5 ((𝐴↑3) + ((-3 · 𝐴) + 1)) = 0
5755, 56eqtrdi 2787 . . . 4 (⊤ → (((ℂfld evalSub1 ℚ)‘𝐹)‘𝐴) = 0)
583qrng0 27584 . . . . 5 0 = (0g𝑄)
59 eqid 2736 . . . . 5 (eval1𝑄) = (eval1𝑄)
60 eqid 2736 . . . . 5 (Base‘𝑃) = (Base‘𝑃)
613qfld 33358 . . . . . 6 𝑄 ∈ Field
6261a1i 11 . . . . 5 (⊤ → 𝑄 ∈ Field)
633qdrng 27583 . . . . . . . . . . 11 𝑄 ∈ DivRing
6463a1i 11 . . . . . . . . . 10 (⊤ → 𝑄 ∈ DivRing)
6564drngringd 20714 . . . . . . . . 9 (⊤ → 𝑄 ∈ Ring)
662ply1ring 22211 . . . . . . . . 9 (𝑄 ∈ Ring → 𝑃 ∈ Ring)
6765, 66syl 17 . . . . . . . 8 (⊤ → 𝑃 ∈ Ring)
6867ringgrpd 20223 . . . . . . 7 (⊤ → 𝑃 ∈ Grp)
69 eqid 2736 . . . . . . . . 9 (mulGrp‘𝑃) = (mulGrp‘𝑃)
7069, 60mgpbas 20126 . . . . . . . 8 (Base‘𝑃) = (Base‘(mulGrp‘𝑃))
7169ringmgp 20220 . . . . . . . . 9 (𝑃 ∈ Ring → (mulGrp‘𝑃) ∈ Mnd)
7267, 71syl 17 . . . . . . . 8 (⊤ → (mulGrp‘𝑃) ∈ Mnd)
73 3nn0 12455 . . . . . . . . 9 3 ∈ ℕ0
7473a1i 11 . . . . . . . 8 (⊤ → 3 ∈ ℕ0)
7552, 2, 60vr1cl 22181 . . . . . . . . 9 (𝑄 ∈ Ring → 𝑋 ∈ (Base‘𝑃))
7665, 75syl 17 . . . . . . . 8 (⊤ → 𝑋 ∈ (Base‘𝑃))
7770, 50, 72, 74, 76mulgnn0cld 19071 . . . . . . 7 (⊤ → (3 𝑋) ∈ (Base‘𝑃))
782ply1sca 22216 . . . . . . . . . . . 12 (𝑄 ∈ DivRing → 𝑄 = (Scalar‘𝑃))
7963, 78ax-mp 5 . . . . . . . . . . 11 𝑄 = (Scalar‘𝑃)
802ply1lmod 22215 . . . . . . . . . . . 12 (𝑄 ∈ Ring → 𝑃 ∈ LMod)
8165, 80syl 17 . . . . . . . . . . 11 (⊤ → 𝑃 ∈ LMod)
823qrngbas 27582 . . . . . . . . . . 11 ℚ = (Base‘𝑄)
8351, 79, 67, 81, 82, 60asclf 21861 . . . . . . . . . 10 (⊤ → 𝐾:ℚ⟶(Base‘𝑃))
8474nn0zd 12549 . . . . . . . . . . 11 (⊤ → 3 ∈ ℤ)
85 zq 12904 . . . . . . . . . . 11 (3 ∈ ℤ → 3 ∈ ℚ)
86 qnegcl 12916 . . . . . . . . . . 11 (3 ∈ ℚ → -3 ∈ ℚ)
8784, 85, 863syl 18 . . . . . . . . . 10 (⊤ → -3 ∈ ℚ)
8883, 87ffvelcdmd 7037 . . . . . . . . 9 (⊤ → (𝐾‘-3) ∈ (Base‘𝑃))
8960, 49, 67, 88, 76ringcld 20241 . . . . . . . 8 (⊤ → ((𝐾‘-3) · 𝑋) ∈ (Base‘𝑃))
90 1zzd 12558 . . . . . . . . . 10 (⊤ → 1 ∈ ℤ)
91 zq 12904 . . . . . . . . . 10 (1 ∈ ℤ → 1 ∈ ℚ)
9290, 91syl 17 . . . . . . . . 9 (⊤ → 1 ∈ ℚ)
9383, 92ffvelcdmd 7037 . . . . . . . 8 (⊤ → (𝐾‘1) ∈ (Base‘𝑃))
9460, 48, 68, 89, 93grpcld 18923 . . . . . . 7 (⊤ → (((𝐾‘-3) · 𝑋) + (𝐾‘1)) ∈ (Base‘𝑃))
9560, 48, 68, 77, 94grpcld 18923 . . . . . 6 (⊤ → ((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1))) ∈ (Base‘𝑃))
9654, 95eqeltrid 2840 . . . . 5 (⊤ → 𝐹 ∈ (Base‘𝑃))
9762fldcrngd 20719 . . . . . . . . 9 (⊤ → 𝑄 ∈ CRing)
9859, 2, 60, 97, 82, 96evl1fvf 33623 . . . . . . . 8 (⊤ → ((eval1𝑄)‘𝐹):ℚ⟶ℚ)
9998ffnd 6669 . . . . . . 7 (⊤ → ((eval1𝑄)‘𝐹) Fn ℚ)
100 fniniseg2 7014 . . . . . . 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 22296 . . . . . . . . . . . . . . 15 (eval1𝑄) = (𝑄 evalSub1 ℚ)
103102a1i 11 . . . . . . . . . . . . . 14 (𝑥 ∈ ℚ → (eval1𝑄) = (𝑄 evalSub1 ℚ))
104103fveq1d 6842 . . . . . . . . . . . . 13 (𝑥 ∈ ℚ → ((eval1𝑄)‘𝐹) = ((𝑄 evalSub1 ℚ)‘𝐹))
105104fveq1d 6842 . . . . . . . . . . . 12 (𝑥 ∈ ℚ → (((eval1𝑄)‘𝐹)‘𝑥) = (((𝑄 evalSub1 ℚ)‘𝐹)‘𝑥))
106 eqid 2736 . . . . . . . . . . . . . . 15 (𝑄 evalSub1 ℚ) = (𝑄 evalSub1 ℚ)
107 cncrng 21373 . . . . . . . . . . . . . . . 16 fld ∈ CRing
108107a1i 11 . . . . . . . . . . . . . . 15 (𝑥 ∈ ℚ → ℂfld ∈ CRing)
10911a1i 11 . . . . . . . . . . . . . . 15 (𝑥 ∈ ℚ → ℚ ∈ (SubRing‘ℂfld))
11097mptru 1549 . . . . . . . . . . . . . . . . . 18 𝑄 ∈ CRing
111110a1i 11 . . . . . . . . . . . . . . . . 17 (𝑥 ∈ ℚ → 𝑄 ∈ CRing)
112111crngringd 20227 . . . . . . . . . . . . . . . 16 (𝑥 ∈ ℚ → 𝑄 ∈ Ring)
11382subrgid 20550 . . . . . . . . . . . . . . . 16 (𝑄 ∈ Ring → ℚ ∈ (SubRing‘𝑄))
114112, 113syl 17 . . . . . . . . . . . . . . 15 (𝑥 ∈ ℚ → ℚ ∈ (SubRing‘𝑄))
11596mptru 1549 . . . . . . . . . . . . . . . 16 𝐹 ∈ (Base‘𝑃)
116115a1i 11 . . . . . . . . . . . . . . 15 (𝑥 ∈ ℚ → 𝐹 ∈ (Base‘𝑃))
1173, 1, 106, 2, 3, 60, 108, 109, 114, 116ressply1evls1 33625 . . . . . . . . . . . . . 14 (𝑥 ∈ ℚ → ((𝑄 evalSub1 ℚ)‘𝐹) = (((ℂfld evalSub1 ℚ)‘𝐹) ↾ ℚ))
118117fveq1d 6842 . . . . . . . . . . . . 13 (𝑥 ∈ ℚ → (((𝑄 evalSub1 ℚ)‘𝐹)‘𝑥) = ((((ℂfld evalSub1 ℚ)‘𝐹) ↾ ℚ)‘𝑥))
119 fvres 6859 . . . . . . . . . . . . 13 (𝑥 ∈ ℚ → ((((ℂfld evalSub1 ℚ)‘𝐹) ↾ ℚ)‘𝑥) = (((ℂfld evalSub1 ℚ)‘𝐹)‘𝑥))
120118, 119eqtr2d 2772 . . . . . . . . . . . 12 (𝑥 ∈ ℚ → (((ℂfld evalSub1 ℚ)‘𝐹)‘𝑥) = (((𝑄 evalSub1 ℚ)‘𝐹)‘𝑥))
121 qcn 12913 . . . . . . . . . . . . 13 (𝑥 ∈ ℚ → 𝑥 ∈ ℂ)
12218, 17, 16, 3, 48, 49, 50, 2, 51, 52, 53, 54, 121cos9thpiminplylem6 33931 . . . . . . . . . . . 12 (𝑥 ∈ ℚ → (((ℂfld evalSub1 ℚ)‘𝐹)‘𝑥) = ((𝑥↑3) + ((-3 · 𝑥) + 1)))
123105, 120, 1223eqtr2d 2777 . . . . . . . . . . 11 (𝑥 ∈ ℚ → (((eval1𝑄)‘𝐹)‘𝑥) = ((𝑥↑3) + ((-3 · 𝑥) + 1)))
124 id 22 . . . . . . . . . . . 12 (𝑥 ∈ ℚ → 𝑥 ∈ ℚ)
125124cos9thpiminplylem2 33927 . . . . . . . . . . 11 (𝑥 ∈ ℚ → ((𝑥↑3) + ((-3 · 𝑥) + 1)) ≠ 0)
126123, 125eqnetrd 2999 . . . . . . . . . 10 (𝑥 ∈ ℚ → (((eval1𝑄)‘𝐹)‘𝑥) ≠ 0)
127126neneqd 2937 . . . . . . . . 9 (𝑥 ∈ ℚ → ¬ (((eval1𝑄)‘𝐹)‘𝑥) = 0)
128127rgen 3053 . . . . . . . 8 𝑥 ∈ ℚ ¬ (((eval1𝑄)‘𝐹)‘𝑥) = 0
129128a1i 11 . . . . . . 7 (⊤ → ∀𝑥 ∈ ℚ ¬ (((eval1𝑄)‘𝐹)‘𝑥) = 0)
130 rabeq0 4328 . . . . . . 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 2771 . . . . 5 (⊤ → (((eval1𝑄)‘𝐹) “ {0}) = ∅)
13354a1i 11 . . . . . . 7 (⊤ → 𝐹 = ((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1))))
134133fveq2d 6844 . . . . . 6 (⊤ → (𝐷𝐹) = (𝐷‘((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1)))))
135 1lt3 12349 . . . . . . . . 9 1 < 3
136135a1i 11 . . . . . . . 8 (⊤ → 1 < 3)
137 0lt1 11672 . . . . . . . . . . . 12 0 < 1
138137a1i 11 . . . . . . . . . . 11 (⊤ → 0 < 1)
139138gt0ne0d 11714 . . . . . . . . . . . 12 (⊤ → 1 ≠ 0)
14053, 2, 82, 51, 58deg1scl 26078 . . . . . . . . . . . 12 ((𝑄 ∈ Ring ∧ 1 ∈ ℚ ∧ 1 ≠ 0) → (𝐷‘(𝐾‘1)) = 0)
14165, 92, 139, 140syl3anc 1374 . . . . . . . . . . 11 (⊤ → (𝐷‘(𝐾‘1)) = 0)
142 drngdomn 20726 . . . . . . . . . . . . . 14 (𝑄 ∈ DivRing → 𝑄 ∈ Domn)
14363, 142mp1i 13 . . . . . . . . . . . . 13 (⊤ → 𝑄 ∈ Domn)
14427, 29negne0d 11503 . . . . . . . . . . . . . 14 (⊤ → -3 ≠ 0)
1452, 51, 58, 47, 82ply1scln0 22256 . . . . . . . . . . . . . 14 ((𝑄 ∈ Ring ∧ -3 ∈ ℚ ∧ -3 ≠ 0) → (𝐾‘-3) ≠ (0g𝑃))
14665, 87, 144, 145syl3anc 1374 . . . . . . . . . . . . 13 (⊤ → (𝐾‘-3) ≠ (0g𝑃))
147107a1i 11 . . . . . . . . . . . . . 14 (⊤ → ℂfld ∈ CRing)
148 drngnzr 20725 . . . . . . . . . . . . . . 15 (ℂfld ∈ DivRing → ℂfld ∈ NzRing)
1499, 148mp1i 13 . . . . . . . . . . . . . 14 (⊤ → ℂfld ∈ NzRing)
15011a1i 11 . . . . . . . . . . . . . 14 (⊤ → ℚ ∈ (SubRing‘ℂfld))
15152, 47, 3, 2, 147, 149, 150vr1nz 33653 . . . . . . . . . . . . 13 (⊤ → 𝑋 ≠ (0g𝑃))
15253, 2, 60, 49, 47, 143, 88, 146, 76, 151deg1mul 26080 . . . . . . . . . . . 12 (⊤ → (𝐷‘((𝐾‘-3) · 𝑋)) = ((𝐷‘(𝐾‘-3)) + (𝐷𝑋)))
15353, 2, 82, 51, 58deg1scl 26078 . . . . . . . . . . . . . 14 ((𝑄 ∈ Ring ∧ -3 ∈ ℚ ∧ -3 ≠ 0) → (𝐷‘(𝐾‘-3)) = 0)
15465, 87, 144, 153syl3anc 1374 . . . . . . . . . . . . 13 (⊤ → (𝐷‘(𝐾‘-3)) = 0)
155 drngnzr 20725 . . . . . . . . . . . . . . 15 (𝑄 ∈ DivRing → 𝑄 ∈ NzRing)
15663, 155mp1i 13 . . . . . . . . . . . . . 14 (⊤ → 𝑄 ∈ NzRing)
15753, 2, 52, 156deg1vr 33652 . . . . . . . . . . . . 13 (⊤ → (𝐷𝑋) = 1)
158154, 157oveq12d 7385 . . . . . . . . . . . 12 (⊤ → ((𝐷‘(𝐾‘-3)) + (𝐷𝑋)) = (0 + 1))
159 1cnd 11139 . . . . . . . . . . . . 13 (⊤ → 1 ∈ ℂ)
160159addlidd 11347 . . . . . . . . . . . 12 (⊤ → (0 + 1) = 1)
161152, 158, 1603eqtrd 2775 . . . . . . . . . . 11 (⊤ → (𝐷‘((𝐾‘-3) · 𝑋)) = 1)
162138, 141, 1613brtr4d 5117 . . . . . . . . . 10 (⊤ → (𝐷‘(𝐾‘1)) < (𝐷‘((𝐾‘-3) · 𝑋)))
1632, 53, 65, 60, 48, 89, 93, 162deg1add 26068 . . . . . . . . 9 (⊤ → (𝐷‘(((𝐾‘-3) · 𝑋) + (𝐾‘1))) = (𝐷‘((𝐾‘-3) · 𝑋)))
164163, 161eqtrd 2771 . . . . . . . 8 (⊤ → (𝐷‘(((𝐾‘-3) · 𝑋) + (𝐾‘1))) = 1)
16553, 2, 52, 69, 50deg1pw 26086 . . . . . . . . 9 ((𝑄 ∈ NzRing ∧ 3 ∈ ℕ0) → (𝐷‘(3 𝑋)) = 3)
166156, 74, 165syl2anc 585 . . . . . . . 8 (⊤ → (𝐷‘(3 𝑋)) = 3)
167136, 164, 1663brtr4d 5117 . . . . . . 7 (⊤ → (𝐷‘(((𝐾‘-3) · 𝑋) + (𝐾‘1))) < (𝐷‘(3 𝑋)))
1682, 53, 65, 60, 48, 77, 94, 167deg1add 26068 . . . . . 6 (⊤ → (𝐷‘((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1)))) = (𝐷‘(3 𝑋)))
169134, 168, 1663eqtrd 2775 . . . . 5 (⊤ → (𝐷𝐹) = 3)
17058, 59, 53, 2, 60, 62, 96, 132, 169ply1dg3rt0irred 33644 . . . 4 (⊤ → 𝐹 ∈ (Irred‘𝑃))
171 eqid 2736 . . . . . . 7 (Irred‘𝑃) = (Irred‘𝑃)
172171, 47irredn0 20403 . . . . . 6 ((𝑃 ∈ Ring ∧ 𝐹 ∈ (Irred‘𝑃)) → 𝐹 ≠ (0g𝑃))
17367, 170, 172syl2anc 585 . . . . 5 (⊤ → 𝐹 ≠ (0g𝑃))
174169fveq2d 6844 . . . . . 6 (⊤ → ((coe1𝐹)‘(𝐷𝐹)) = ((coe1𝐹)‘3))
175133fveq2d 6844 . . . . . . . 8 (⊤ → (coe1𝐹) = (coe1‘((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1)))))
176175fveq1d 6842 . . . . . . 7 (⊤ → ((coe1𝐹)‘3) = ((coe1‘((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1))))‘3))
177 cnfldadd 21358 . . . . . . . . . . 11 + = (+g‘ℂfld)
1783, 177ressplusg 17254 . . . . . . . . . 10 (ℚ ∈ (SubRing‘ℂfld) → + = (+g𝑄))
17911, 178ax-mp 5 . . . . . . . . 9 + = (+g𝑄)
1802, 60, 48, 179coe1addfv 22230 . . . . . . . 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 1376 . . . . . . 7 (⊤ → ((coe1‘((3 𝑋) + (((𝐾‘-3) · 𝑋) + (𝐾‘1))))‘3) = (((coe1‘(3 𝑋))‘3) + ((coe1‘(((𝐾‘-3) · 𝑋) + (𝐾‘1)))‘3)))
182 iftrue 4472 . . . . . . . . . 10 (𝑖 = 3 → if(𝑖 = 3, 1, 0) = 1)
1833qrng1 27585 . . . . . . . . . . 11 1 = (1r𝑄)
1842, 52, 50, 65, 74, 58, 183coe1mon 33647 . . . . . . . . . 10 (⊤ → (coe1‘(3 𝑋)) = (𝑖 ∈ ℕ0 ↦ if(𝑖 = 3, 1, 0)))
185182, 184, 74, 159fvmptd4 6972 . . . . . . . . 9 (⊤ → ((coe1‘(3 𝑋))‘3) = 1)
1862, 60, 48, 179coe1addfv 22230 . . . . . . . . . . 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 1376 . . . . . . . . . 10 (⊤ → ((coe1‘(((𝐾‘-3) · 𝑋) + (𝐾‘1)))‘3) = (((coe1‘((𝐾‘-3) · 𝑋))‘3) + ((coe1‘(𝐾‘1))‘3)))
1882ply1assa 22163 . . . . . . . . . . . . . . . . 17 (𝑄 ∈ CRing → 𝑃 ∈ AssAlg)
18997, 188syl 17 . . . . . . . . . . . . . . . 16 (⊤ → 𝑃 ∈ AssAlg)
190 eqid 2736 . . . . . . . . . . . . . . . . 17 ( ·𝑠𝑃) = ( ·𝑠𝑃)
19151, 79, 82, 60, 49, 190asclmul1 21866 . . . . . . . . . . . . . . . 16 ((𝑃 ∈ AssAlg ∧ -3 ∈ ℚ ∧ 𝑋 ∈ (Base‘𝑃)) → ((𝐾‘-3) · 𝑋) = (-3( ·𝑠𝑃)𝑋))
192189, 87, 76, 191syl3anc 1374 . . . . . . . . . . . . . . 15 (⊤ → ((𝐾‘-3) · 𝑋) = (-3( ·𝑠𝑃)𝑋))
19370, 50mulg1 19057 . . . . . . . . . . . . . . . . 17 (𝑋 ∈ (Base‘𝑃) → (1 𝑋) = 𝑋)
19476, 193syl 17 . . . . . . . . . . . . . . . 16 (⊤ → (1 𝑋) = 𝑋)
195194oveq2d 7383 . . . . . . . . . . . . . . 15 (⊤ → (-3( ·𝑠𝑃)(1 𝑋)) = (-3( ·𝑠𝑃)𝑋))
196192, 195eqtr4d 2774 . . . . . . . . . . . . . 14 (⊤ → ((𝐾‘-3) · 𝑋) = (-3( ·𝑠𝑃)(1 𝑋)))
197196fveq2d 6844 . . . . . . . . . . . . 13 (⊤ → (coe1‘((𝐾‘-3) · 𝑋)) = (coe1‘(-3( ·𝑠𝑃)(1 𝑋))))
198197fveq1d 6842 . . . . . . . . . . . 12 (⊤ → ((coe1‘((𝐾‘-3) · 𝑋))‘3) = ((coe1‘(-3( ·𝑠𝑃)(1 𝑋)))‘3))
199 1nn0 12453 . . . . . . . . . . . . . 14 1 ∈ ℕ0
200199a1i 11 . . . . . . . . . . . . 13 (⊤ → 1 ∈ ℕ0)
201 1red 11145 . . . . . . . . . . . . . 14 (⊤ → 1 ∈ ℝ)
202201, 136ltned 11282 . . . . . . . . . . . . 13 (⊤ → 1 ≠ 3)
20358, 82, 2, 52, 190, 69, 50, 65, 87, 200, 74, 202coe1tmfv2 22240 . . . . . . . . . . . 12 (⊤ → ((coe1‘(-3( ·𝑠𝑃)(1 𝑋)))‘3) = 0)
204198, 203eqtrd 2771 . . . . . . . . . . 11 (⊤ → ((coe1‘((𝐾‘-3) · 𝑋))‘3) = 0)
2052, 51, 82, 58coe1scl 22252 . . . . . . . . . . . . 13 ((𝑄 ∈ Ring ∧ 1 ∈ ℚ) → (coe1‘(𝐾‘1)) = (𝑖 ∈ ℕ0 ↦ if(𝑖 = 0, 1, 0)))
20665, 92, 205syl2anc 585 . . . . . . . . . . . 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 2999 . . . . . . . . . . . . . 14 ((⊤ ∧ 𝑖 = 3) → 𝑖 ≠ 0)
210209neneqd 2937 . . . . . . . . . . . . 13 ((⊤ ∧ 𝑖 = 3) → ¬ 𝑖 = 0)
211210iffalsed 4477 . . . . . . . . . . . 12 ((⊤ ∧ 𝑖 = 3) → if(𝑖 = 0, 1, 0) = 0)
212 0zd 12536 . . . . . . . . . . . 12 (⊤ → 0 ∈ ℤ)
213206, 211, 74, 212fvmptd 6955 . . . . . . . . . . 11 (⊤ → ((coe1‘(𝐾‘1))‘3) = 0)
214204, 213oveq12d 7385 . . . . . . . . . 10 (⊤ → (((coe1‘((𝐾‘-3) · 𝑋))‘3) + ((coe1‘(𝐾‘1))‘3)) = (0 + 0))
215 00id 11321 . . . . . . . . . . 11 (0 + 0) = 0
216215a1i 11 . . . . . . . . . 10 (⊤ → (0 + 0) = 0)
217187, 214, 2163eqtrd 2775 . . . . . . . . 9 (⊤ → ((coe1‘(((𝐾‘-3) · 𝑋) + (𝐾‘1)))‘3) = 0)
218185, 217oveq12d 7385 . . . . . . . 8 (⊤ → (((coe1‘(3 𝑋))‘3) + ((coe1‘(((𝐾‘-3) · 𝑋) + (𝐾‘1)))‘3)) = (1 + 0))
219159addridd 11346 . . . . . . . 8 (⊤ → (1 + 0) = 1)
220218, 219eqtrd 2771 . . . . . . 7 (⊤ → (((coe1‘(3 𝑋))‘3) + ((coe1‘(((𝐾‘-3) · 𝑋) + (𝐾‘1)))‘3)) = 1)
221176, 181, 2203eqtrd 2775 . . . . . 6 (⊤ → ((coe1𝐹)‘3) = 1)
222174, 221eqtrd 2771 . . . . 5 (⊤ → ((coe1𝐹)‘(𝐷𝐹)) = 1)
2233fveq2i 6843 . . . . . . 7 (Monic1p𝑄) = (Monic1p‘(ℂflds ℚ))
224223eqcomi 2745 . . . . . 6 (Monic1p‘(ℂflds ℚ)) = (Monic1p𝑄)
2252, 60, 47, 53, 224, 183ismon1p 26108 . . . . 5 (𝐹 ∈ (Monic1p‘(ℂflds ℚ)) ↔ (𝐹 ∈ (Base‘𝑃) ∧ 𝐹 ≠ (0g𝑃) ∧ ((coe1𝐹)‘(𝐷𝐹)) = 1))
22696, 173, 222, 225syl3anbrc 1345 . . . 4 (⊤ → 𝐹 ∈ (Monic1p‘(ℂflds ℚ)))
2271, 5, 6, 8, 15, 44, 45, 46, 47, 57, 170, 226irredminply 33860 . . 3 (⊤ → 𝐹 = (𝑀𝐴))
228227, 169jca 511 . 2 (⊤ → (𝐹 = (𝑀𝐴) ∧ (𝐷𝐹) = 3))
229228mptru 1549 1 (𝐹 = (𝑀𝐴) ∧ (𝐷𝐹) = 3)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wa 395   = wceq 1542  wtru 1543  wcel 2114  wne 2932  wral 3051  {crab 3389  c0 4273  ifcif 4466  {csn 4567   class class class wbr 5085  cmpt 5166  ccnv 5630  cres 5633  cima 5634   Fn wfn 6493  cfv 6498  (class class class)co 7367  cc 11036  0cc0 11038  1c1 11039  ici 11040   + caddc 11041   · cmul 11043   < clt 11179  -cneg 11378   / cdiv 11807  2c2 12236  3c3 12237  0cn0 12437  cz 12524  cq 12898  cexp 14023  expce 16026  πcpi 16031  Basecbs 17179  s cress 17200  +gcplusg 17220  .rcmulr 17221  Scalarcsca 17223   ·𝑠 cvsca 17224  0gc0g 17402  Mndcmnd 18702  .gcmg 19043  mulGrpcmgp 20121  Ringcrg 20214  CRingccrg 20215  Irredcir 20336  NzRingcnzr 20489  SubRingcsubrg 20546  Domncdomn 20669  DivRingcdr 20706  Fieldcfield 20707  SubDRingcsdrg 20763  LModclmod 20855  fldccnfld 21352  AssAlgcasa 21830  algSccascl 21832  var1cv1 22139  Poly1cpl1 22140  coe1cco1 22141   evalSub1 ces1 22278  eval1ce1 22279  deg1cdg1 26019  Monic1pcmn1 26091  𝑐ccxp 26519   minPoly cminply 33843
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2708  ax-rep 5212  ax-sep 5231  ax-nul 5241  ax-pow 5307  ax-pr 5375  ax-un 7689  ax-inf2 9562  ax-cnex 11094  ax-resscn 11095  ax-1cn 11096  ax-icn 11097  ax-addcl 11098  ax-addrcl 11099  ax-mulcl 11100  ax-mulrcl 11101  ax-mulcom 11102  ax-addass 11103  ax-mulass 11104  ax-distr 11105  ax-i2m1 11106  ax-1ne0 11107  ax-1rid 11108  ax-rnegex 11109  ax-rrecex 11110  ax-cnre 11111  ax-pre-lttri 11112  ax-pre-lttrn 11113  ax-pre-ltadd 11114  ax-pre-mulgt0 11115  ax-pre-sup 11116  ax-addf 11117  ax-mulf 11118
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3or 1088  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  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 3062  df-rmo 3342  df-reu 3343  df-rab 3390  df-v 3431  df-sbc 3729  df-csb 3838  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-pss 3909  df-nul 4274  df-if 4467  df-pw 4543  df-sn 4568  df-pr 4570  df-tp 4572  df-op 4574  df-uni 4851  df-int 4890  df-iun 4935  df-iin 4936  df-br 5086  df-opab 5148  df-mpt 5167  df-tr 5193  df-id 5526  df-eprel 5531  df-po 5539  df-so 5540  df-fr 5584  df-se 5585  df-we 5586  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-rn 5642  df-res 5643  df-ima 5644  df-pred 6265  df-ord 6326  df-on 6327  df-lim 6328  df-suc 6329  df-iota 6454  df-fun 6500  df-fn 6501  df-f 6502  df-f1 6503  df-fo 6504  df-f1o 6505  df-fv 6506  df-isom 6507  df-riota 7324  df-ov 7370  df-oprab 7371  df-mpo 7372  df-of 7631  df-ofr 7632  df-om 7818  df-1st 7942  df-2nd 7943  df-supp 8111  df-tpos 8176  df-frecs 8231  df-wrecs 8262  df-recs 8311  df-rdg 8349  df-1o 8405  df-2o 8406  df-er 8643  df-map 8775  df-pm 8776  df-ixp 8846  df-en 8894  df-dom 8895  df-sdom 8896  df-fin 8897  df-fsupp 9275  df-fi 9324  df-sup 9355  df-inf 9356  df-oi 9425  df-card 9863  df-pnf 11181  df-mnf 11182  df-xr 11183  df-ltxr 11184  df-le 11185  df-sub 11379  df-neg 11380  df-div 11808  df-nn 12175  df-2 12244  df-3 12245  df-4 12246  df-5 12247  df-6 12248  df-7 12249  df-8 12250  df-9 12251  df-n0 12438  df-z 12525  df-dec 12645  df-uz 12789  df-q 12899  df-rp 12943  df-xneg 13063  df-xadd 13064  df-xmul 13065  df-ioo 13302  df-ioc 13303  df-ico 13304  df-icc 13305  df-fz 13462  df-fzo 13609  df-fl 13751  df-mod 13829  df-seq 13964  df-exp 14024  df-fac 14236  df-bc 14265  df-hash 14293  df-shft 15029  df-sgn 15049  df-cj 15061  df-re 15062  df-im 15063  df-sqrt 15197  df-abs 15198  df-limsup 15433  df-clim 15450  df-rlim 15451  df-sum 15649  df-ef 16032  df-sin 16034  df-cos 16035  df-pi 16037  df-dvds 16222  df-gcd 16464  df-prm 16641  df-struct 17117  df-sets 17134  df-slot 17152  df-ndx 17164  df-base 17180  df-ress 17201  df-plusg 17233  df-mulr 17234  df-starv 17235  df-sca 17236  df-vsca 17237  df-ip 17238  df-tset 17239  df-ple 17240  df-ds 17242  df-unif 17243  df-hom 17244  df-cco 17245  df-rest 17385  df-topn 17386  df-0g 17404  df-gsum 17405  df-topgen 17406  df-pt 17407  df-prds 17410  df-pws 17412  df-xrs 17466  df-qtop 17471  df-imas 17472  df-xps 17474  df-mre 17548  df-mrc 17549  df-acs 17551  df-mgm 18608  df-sgrp 18687  df-mnd 18703  df-mhm 18751  df-submnd 18752  df-grp 18912  df-minusg 18913  df-sbg 18914  df-mulg 19044  df-subg 19099  df-ghm 19188  df-cntz 19292  df-cmn 19757  df-abl 19758  df-mgp 20122  df-rng 20134  df-ur 20163  df-srg 20168  df-ring 20216  df-cring 20217  df-oppr 20317  df-dvdsr 20337  df-unit 20338  df-irred 20339  df-invr 20368  df-dvr 20381  df-rhm 20452  df-nzr 20490  df-subrng 20523  df-subrg 20547  df-rlreg 20671  df-domn 20672  df-idom 20673  df-drng 20708  df-field 20709  df-sdrg 20764  df-lmod 20857  df-lss 20927  df-lsp 20967  df-sra 21168  df-rgmod 21169  df-lidl 21206  df-rsp 21207  df-psmet 21344  df-xmet 21345  df-met 21346  df-bl 21347  df-mopn 21348  df-fbas 21349  df-fg 21350  df-cnfld 21353  df-assa 21833  df-asp 21834  df-ascl 21835  df-psr 21889  df-mvr 21890  df-mpl 21891  df-opsr 21893  df-evls 22052  df-evl 22053  df-psr1 22143  df-vr1 22144  df-ply1 22145  df-coe1 22146  df-evls1 22280  df-evl1 22281  df-top 22859  df-topon 22876  df-topsp 22898  df-bases 22911  df-cld 22984  df-ntr 22985  df-cls 22986  df-nei 23063  df-lp 23101  df-perf 23102  df-cn 23192  df-cnp 23193  df-haus 23280  df-tx 23527  df-hmeo 23720  df-fil 23811  df-fm 23903  df-flim 23904  df-flf 23905  df-xms 24285  df-ms 24286  df-tms 24287  df-cncf 24845  df-limc 25833  df-dv 25834  df-mdeg 26020  df-deg1 26021  df-mon1 26096  df-uc1p 26097  df-q1p 26098  df-r1p 26099  df-ig1p 26100  df-log 26520  df-cxp 26521  df-irng 33828  df-minply 33844
This theorem is referenced by:  cos9thpinconstrlem2  33934
  Copyright terms: Public domain W3C validator