Proof of Theorem rngunsnply1chr2lem1
| Step | Hyp | Ref
| Expression |
| 1 | | eqid 2763 |
. . 3
⊢ (𝑅 ↾s 𝑆) = (𝑅 ↾s 𝑆) |
| 2 | | rngunsnply1chr2lem.d |
. . 3
⊢ 𝐷 = (deg1‘𝑅) |
| 3 | | rngunsnply1chr2.p |
. . 3
⊢ 𝑃 =
(Poly1‘(𝑅
↾s 𝑆)) |
| 4 | | rngunsnply1chr2.u |
. . 3
⊢ 𝑈 = (Base‘𝑃) |
| 5 | | rngunsnply1chr2lem.g |
. . . 4
⊢ 𝐺 =
((2(.g‘(mulGrp‘𝑃))(var1‘𝑅))(-g‘𝑃)((𝐴( ·𝑠
‘𝑃)(var1‘𝑅))(+g‘𝑃)((algSc‘𝑃)‘𝐵))) |
| 6 | | eqid 2763 |
. . . . 5
⊢
(-g‘𝑃) = (-g‘𝑃) |
| 7 | | rngunsnply1chr2.s |
. . . . . . . 8
⊢ (𝜑 → 𝑆 ∈ (SubRing‘𝑅)) |
| 8 | 1 | subrgring 20868 |
. . . . . . . 8
⊢ (𝑆 ∈ (SubRing‘𝑅) → (𝑅 ↾s 𝑆) ∈ Ring) |
| 9 | 7, 8 | syl 18 |
. . . . . . 7
⊢ (𝜑 → (𝑅 ↾s 𝑆) ∈ Ring) |
| 10 | 3 | ply1ring 22609 |
. . . . . . 7
⊢ ((𝑅 ↾s 𝑆) ∈ Ring → 𝑃 ∈ Ring) |
| 11 | 9, 10 | syl 18 |
. . . . . 6
⊢ (𝜑 → 𝑃 ∈ Ring) |
| 12 | 11 | ringgrpd 20511 |
. . . . 5
⊢ (𝜑 → 𝑃 ∈ Grp) |
| 13 | | eqid 2763 |
. . . . . . 7
⊢
(mulGrp‘𝑃) =
(mulGrp‘𝑃) |
| 14 | 13, 4 | mgpbas 20407 |
. . . . . 6
⊢ 𝑈 =
(Base‘(mulGrp‘𝑃)) |
| 15 | | eqid 2763 |
. . . . . 6
⊢
(.g‘(mulGrp‘𝑃)) =
(.g‘(mulGrp‘𝑃)) |
| 16 | 13 | ringmgp 20507 |
. . . . . . 7
⊢ (𝑃 ∈ Ring →
(mulGrp‘𝑃) ∈
Mnd) |
| 17 | 11, 16 | syl 18 |
. . . . . 6
⊢ (𝜑 → (mulGrp‘𝑃) ∈ Mnd) |
| 18 | | 2nn0 12661 |
. . . . . . 7
⊢ 2 ∈
ℕ0 |
| 19 | 18 | a1i 11 |
. . . . . 6
⊢ (𝜑 → 2 ∈
ℕ0) |
| 20 | | eqid 2763 |
. . . . . . 7
⊢
(var1‘𝑅) = (var1‘𝑅) |
| 21 | 20, 7, 1, 3, 4 | subrgvr1cl 22625 |
. . . . . 6
⊢ (𝜑 →
(var1‘𝑅)
∈ 𝑈) |
| 22 | 14, 15, 17, 19, 21 | mulgnn0cld 19346 |
. . . . 5
⊢ (𝜑 →
(2(.g‘(mulGrp‘𝑃))(var1‘𝑅)) ∈ 𝑈) |
| 23 | | eqid 2763 |
. . . . . 6
⊢
(+g‘𝑃) = (+g‘𝑃) |
| 24 | | eqid 2763 |
. . . . . . 7
⊢
(Scalar‘𝑃) =
(Scalar‘𝑃) |
| 25 | | eqid 2763 |
. . . . . . 7
⊢ (
·𝑠 ‘𝑃) = ( ·𝑠
‘𝑃) |
| 26 | | eqid 2763 |
. . . . . . 7
⊢
(Base‘(Scalar‘𝑃)) = (Base‘(Scalar‘𝑃)) |
| 27 | 3 | ply1lmod 22613 |
. . . . . . . 8
⊢ ((𝑅 ↾s 𝑆) ∈ Ring → 𝑃 ∈ LMod) |
| 28 | 9, 27 | syl 18 |
. . . . . . 7
⊢ (𝜑 → 𝑃 ∈ LMod) |
| 29 | | rngunsnply1chr2.a |
. . . . . . . 8
⊢ (𝜑 → 𝐴 ∈ 𝑆) |
| 30 | 1 | subrgbas 20875 |
. . . . . . . . . 10
⊢ (𝑆 ∈ (SubRing‘𝑅) → 𝑆 = (Base‘(𝑅 ↾s 𝑆))) |
| 31 | 7, 30 | syl 18 |
. . . . . . . . 9
⊢ (𝜑 → 𝑆 = (Base‘(𝑅 ↾s 𝑆))) |
| 32 | | ovex 7482 |
. . . . . . . . . . 11
⊢ (𝑅 ↾s 𝑆) ∈ V |
| 33 | 3 | ply1sca 22614 |
. . . . . . . . . . 11
⊢ ((𝑅 ↾s 𝑆) ∈ V → (𝑅 ↾s 𝑆) = (Scalar‘𝑃)) |
| 34 | 32, 33 | ax-mp 5 |
. . . . . . . . . 10
⊢ (𝑅 ↾s 𝑆) = (Scalar‘𝑃) |
| 35 | 34 | fveq2i 6917 |
. . . . . . . . 9
⊢
(Base‘(𝑅
↾s 𝑆)) =
(Base‘(Scalar‘𝑃)) |
| 36 | 31, 35 | eqtrdi 2814 |
. . . . . . . 8
⊢ (𝜑 → 𝑆 = (Base‘(Scalar‘𝑃))) |
| 37 | 29, 36 | eleqtrd 2866 |
. . . . . . 7
⊢ (𝜑 → 𝐴 ∈ (Base‘(Scalar‘𝑃))) |
| 38 | 4, 24, 25, 26, 28, 37, 21 | lmodvscld 21196 |
. . . . . 6
⊢ (𝜑 → (𝐴( ·𝑠
‘𝑃)(var1‘𝑅)) ∈ 𝑈) |
| 39 | | eqid 2763 |
. . . . . . 7
⊢
(algSc‘𝑃) =
(algSc‘𝑃) |
| 40 | | rngunsnply1chr2.r |
. . . . . . 7
⊢ (𝜑 → 𝑅 ∈ CRing) |
| 41 | | rngunsnply1chr2.b |
. . . . . . 7
⊢ (𝜑 → 𝐵 ∈ 𝑆) |
| 42 | 3, 1, 39, 4, 40, 7, 41 | ressasclcl 34199 |
. . . . . 6
⊢ (𝜑 → ((algSc‘𝑃)‘𝐵) ∈ 𝑈) |
| 43 | 4, 23, 12, 38, 42 | grpcld 19199 |
. . . . 5
⊢ (𝜑 → ((𝐴( ·𝑠
‘𝑃)(var1‘𝑅))(+g‘𝑃)((algSc‘𝑃)‘𝐵)) ∈ 𝑈) |
| 44 | 4, 6, 12, 22, 43 | grpsubcld 33691 |
. . . 4
⊢ (𝜑 →
((2(.g‘(mulGrp‘𝑃))(var1‘𝑅))(-g‘𝑃)((𝐴( ·𝑠
‘𝑃)(var1‘𝑅))(+g‘𝑃)((algSc‘𝑃)‘𝐵))) ∈ 𝑈) |
| 45 | 5, 44 | eqeltrid 2868 |
. . 3
⊢ (𝜑 → 𝐺 ∈ 𝑈) |
| 46 | 1, 2, 3, 4, 45, 7 | ressdeg1 34194 |
. 2
⊢ (𝜑 → (𝐷‘𝐺) = ((deg1‘(𝑅 ↾s 𝑆))‘𝐺)) |
| 47 | 5 | fveq2i 6917 |
. . 3
⊢
((deg1‘(𝑅 ↾s 𝑆))‘𝐺) = ((deg1‘(𝑅 ↾s 𝑆))‘((2(.g‘(mulGrp‘𝑃))(var1‘𝑅))(-g‘𝑃)((𝐴( ·𝑠 ‘𝑃)(var1‘𝑅))(+g‘𝑃)((algSc‘𝑃)‘𝐵)))) |
| 48 | 47 | a1i 11 |
. 2
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘𝐺) = ((deg1‘(𝑅 ↾s 𝑆))‘((2(.g‘(mulGrp‘𝑃))(var1‘𝑅))(-g‘𝑃)((𝐴( ·𝑠 ‘𝑃)(var1‘𝑅))(+g‘𝑃)((algSc‘𝑃)‘𝐵))))) |
| 49 | | eqid 2763 |
. . . 4
⊢
(deg1‘(𝑅 ↾s 𝑆)) = (deg1‘(𝑅 ↾s 𝑆)) |
| 50 | 49, 3, 4 | deg1xrcl 26444 |
. . . . . 6
⊢ (((𝐴(
·𝑠 ‘𝑃)(var1‘𝑅))(+g‘𝑃)((algSc‘𝑃)‘𝐵)) ∈ 𝑈 → ((deg1‘(𝑅 ↾s 𝑆))‘((𝐴( ·𝑠
‘𝑃)(var1‘𝑅))(+g‘𝑃)((algSc‘𝑃)‘𝐵))) ∈
ℝ*) |
| 51 | 43, 50 | syl 18 |
. . . . 5
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘((𝐴( ·𝑠
‘𝑃)(var1‘𝑅))(+g‘𝑃)((algSc‘𝑃)‘𝐵))) ∈
ℝ*) |
| 52 | | 1xr 11405 |
. . . . . 6
⊢ 1 ∈
ℝ* |
| 53 | 52 | a1i 11 |
. . . . 5
⊢ (𝜑 → 1 ∈
ℝ*) |
| 54 | 49, 3, 4 | deg1xrcl 26444 |
. . . . . 6
⊢
((2(.g‘(mulGrp‘𝑃))(var1‘𝑅)) ∈ 𝑈 → ((deg1‘(𝑅 ↾s 𝑆))‘(2(.g‘(mulGrp‘𝑃))(var1‘𝑅))) ∈
ℝ*) |
| 55 | 22, 54 | syl 18 |
. . . . 5
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘(2(.g‘(mulGrp‘𝑃))(var1‘𝑅))) ∈
ℝ*) |
| 56 | 20, 7, 1 | subrgvr1 22624 |
. . . . . . . . . . . 12
⊢ (𝜑 →
(var1‘𝑅) =
(var1‘(𝑅
↾s 𝑆))) |
| 57 | 56, 21 | eqeltrrd 2865 |
. . . . . . . . . . 11
⊢ (𝜑 →
(var1‘(𝑅
↾s 𝑆))
∈ 𝑈) |
| 58 | 14, 15 | mulg1 19332 |
. . . . . . . . . . 11
⊢
((var1‘(𝑅 ↾s 𝑆)) ∈ 𝑈 →
(1(.g‘(mulGrp‘𝑃))(var1‘(𝑅 ↾s 𝑆))) = (var1‘(𝑅 ↾s 𝑆))) |
| 59 | 57, 58 | syl 18 |
. . . . . . . . . 10
⊢ (𝜑 →
(1(.g‘(mulGrp‘𝑃))(var1‘(𝑅 ↾s 𝑆))) = (var1‘(𝑅 ↾s 𝑆))) |
| 60 | 59, 56 | eqtr4d 2801 |
. . . . . . . . 9
⊢ (𝜑 →
(1(.g‘(mulGrp‘𝑃))(var1‘(𝑅 ↾s 𝑆))) = (var1‘𝑅)) |
| 61 | 60 | oveq2d 7465 |
. . . . . . . 8
⊢ (𝜑 → (𝐴( ·𝑠
‘𝑃)(1(.g‘(mulGrp‘𝑃))(var1‘(𝑅 ↾s 𝑆)))) = (𝐴( ·𝑠
‘𝑃)(var1‘𝑅))) |
| 62 | 61 | fveq2d 6918 |
. . . . . . 7
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘(𝐴( ·𝑠
‘𝑃)(1(.g‘(mulGrp‘𝑃))(var1‘(𝑅 ↾s 𝑆))))) =
((deg1‘(𝑅
↾s 𝑆))‘(𝐴( ·𝑠
‘𝑃)(var1‘𝑅)))) |
| 63 | 29, 31 | eleqtrd 2866 |
. . . . . . . 8
⊢ (𝜑 → 𝐴 ∈ (Base‘(𝑅 ↾s 𝑆))) |
| 64 | | 1nn0 12660 |
. . . . . . . . 9
⊢ 1 ∈
ℕ0 |
| 65 | 64 | a1i 11 |
. . . . . . . 8
⊢ (𝜑 → 1 ∈
ℕ0) |
| 66 | | eqid 2763 |
. . . . . . . . 9
⊢
(Base‘(𝑅
↾s 𝑆)) =
(Base‘(𝑅
↾s 𝑆)) |
| 67 | | eqid 2763 |
. . . . . . . . 9
⊢
(var1‘(𝑅 ↾s 𝑆)) = (var1‘(𝑅 ↾s 𝑆)) |
| 68 | 49, 66, 3, 67, 25, 13, 15 | deg1tmle 26480 |
. . . . . . . 8
⊢ (((𝑅 ↾s 𝑆) ∈ Ring ∧ 𝐴 ∈ (Base‘(𝑅 ↾s 𝑆)) ∧ 1 ∈
ℕ0) → ((deg1‘(𝑅 ↾s 𝑆))‘(𝐴( ·𝑠
‘𝑃)(1(.g‘(mulGrp‘𝑃))(var1‘(𝑅 ↾s 𝑆))))) ≤ 1) |
| 69 | 9, 63, 65, 68 | syl3anc 1399 |
. . . . . . 7
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘(𝐴( ·𝑠
‘𝑃)(1(.g‘(mulGrp‘𝑃))(var1‘(𝑅 ↾s 𝑆))))) ≤ 1) |
| 70 | 62, 69 | eqbrtrrd 5133 |
. . . . . 6
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘(𝐴( ·𝑠
‘𝑃)(var1‘𝑅))) ≤ 1) |
| 71 | 49, 3, 4 | deg1xrcl 26444 |
. . . . . . . 8
⊢
(((algSc‘𝑃)‘𝐵) ∈ 𝑈 → ((deg1‘(𝑅 ↾s 𝑆))‘((algSc‘𝑃)‘𝐵)) ∈
ℝ*) |
| 72 | 42, 71 | syl 18 |
. . . . . . 7
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘((algSc‘𝑃)‘𝐵)) ∈
ℝ*) |
| 73 | | 0xr 11393 |
. . . . . . . . 9
⊢ 0 ∈
ℝ* |
| 74 | 73 | a1i 11 |
. . . . . . . 8
⊢ (𝜑 → 0 ∈
ℝ*) |
| 75 | 41, 31 | eleqtrd 2866 |
. . . . . . . . 9
⊢ (𝜑 → 𝐵 ∈ (Base‘(𝑅 ↾s 𝑆))) |
| 76 | 49, 3, 66, 39 | deg1sclle 26474 |
. . . . . . . . 9
⊢ (((𝑅 ↾s 𝑆) ∈ Ring ∧ 𝐵 ∈ (Base‘(𝑅 ↾s 𝑆))) →
((deg1‘(𝑅
↾s 𝑆))‘((algSc‘𝑃)‘𝐵)) ≤ 0) |
| 77 | 9, 75, 76 | syl2anc 596 |
. . . . . . . 8
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘((algSc‘𝑃)‘𝐵)) ≤ 0) |
| 78 | | 0lt1 11876 |
. . . . . . . . 9
⊢ 0 <
1 |
| 79 | 78 | a1i 11 |
. . . . . . . 8
⊢ (𝜑 → 0 < 1) |
| 80 | 72, 74, 53, 77, 79 | xrlelttrd 13327 |
. . . . . . 7
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘((algSc‘𝑃)‘𝐵)) < 1) |
| 81 | 72, 53, 80 | xrltled 13317 |
. . . . . 6
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘((algSc‘𝑃)‘𝐵)) ≤ 1) |
| 82 | 3, 49, 9, 4, 23, 38, 42, 53, 70, 81 | deg1addle2 26464 |
. . . . 5
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘((𝐴( ·𝑠
‘𝑃)(var1‘𝑅))(+g‘𝑃)((algSc‘𝑃)‘𝐵))) ≤ 1) |
| 83 | | 1lt2 12553 |
. . . . . 6
⊢ 1 <
2 |
| 84 | 56 | oveq2d 7465 |
. . . . . . . 8
⊢ (𝜑 →
(2(.g‘(mulGrp‘𝑃))(var1‘𝑅)) =
(2(.g‘(mulGrp‘𝑃))(var1‘(𝑅 ↾s 𝑆)))) |
| 85 | 84 | fveq2d 6918 |
. . . . . . 7
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘(2(.g‘(mulGrp‘𝑃))(var1‘𝑅))) = ((deg1‘(𝑅 ↾s 𝑆))‘(2(.g‘(mulGrp‘𝑃))(var1‘(𝑅 ↾s 𝑆))))) |
| 86 | | rngunsnply1chr2.1 |
. . . . . . . . 9
⊢ (𝜑 → 𝑅 ∈ NzRing) |
| 87 | 1 | subrgnzr 20888 |
. . . . . . . . 9
⊢ ((𝑅 ∈ NzRing ∧ 𝑆 ∈ (SubRing‘𝑅)) → (𝑅 ↾s 𝑆) ∈ NzRing) |
| 88 | 86, 7, 87 | syl2anc 596 |
. . . . . . . 8
⊢ (𝜑 → (𝑅 ↾s 𝑆) ∈ NzRing) |
| 89 | 49, 3, 67, 13, 15 | deg1pw 26483 |
. . . . . . . 8
⊢ (((𝑅 ↾s 𝑆) ∈ NzRing ∧ 2 ∈
ℕ0) → ((deg1‘(𝑅 ↾s 𝑆))‘(2(.g‘(mulGrp‘𝑃))(var1‘(𝑅 ↾s 𝑆)))) = 2) |
| 90 | 88, 19, 89 | syl2anc 596 |
. . . . . . 7
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘(2(.g‘(mulGrp‘𝑃))(var1‘(𝑅 ↾s 𝑆)))) = 2) |
| 91 | 85, 90 | eqtrd 2798 |
. . . . . 6
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘(2(.g‘(mulGrp‘𝑃))(var1‘𝑅))) = 2) |
| 92 | 83, 91 | breqtrrid 5147 |
. . . . 5
⊢ (𝜑 → 1 <
((deg1‘(𝑅
↾s 𝑆))‘(2(.g‘(mulGrp‘𝑃))(var1‘𝑅)))) |
| 93 | 51, 53, 55, 82, 92 | xrlelttrd 13327 |
. . . 4
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘((𝐴( ·𝑠
‘𝑃)(var1‘𝑅))(+g‘𝑃)((algSc‘𝑃)‘𝐵))) < ((deg1‘(𝑅 ↾s 𝑆))‘(2(.g‘(mulGrp‘𝑃))(var1‘𝑅)))) |
| 94 | 3, 49, 9, 4, 6, 22,
43, 93 | deg1sub 26470 |
. . 3
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘((2(.g‘(mulGrp‘𝑃))(var1‘𝑅))(-g‘𝑃)((𝐴( ·𝑠 ‘𝑃)(var1‘𝑅))(+g‘𝑃)((algSc‘𝑃)‘𝐵)))) = ((deg1‘(𝑅 ↾s 𝑆))‘(2(.g‘(mulGrp‘𝑃))(var1‘𝑅)))) |
| 95 | 94, 91 | eqtrd 2798 |
. 2
⊢ (𝜑 →
((deg1‘(𝑅
↾s 𝑆))‘((2(.g‘(mulGrp‘𝑃))(var1‘𝑅))(-g‘𝑃)((𝐴( ·𝑠 ‘𝑃)(var1‘𝑅))(+g‘𝑃)((algSc‘𝑃)‘𝐵)))) = 2) |
| 96 | 46, 48, 95 | 3eqtrd 2802 |
1
⊢ (𝜑 → (𝐷‘𝐺) = 2) |