| Step | Hyp | Ref
| Expression |
| 1 | | matgsum.j |
. . . 4
⊢ (𝜑 → 𝐽 ∈ 𝑊) |
| 2 | 1 | mptexd 7244 |
. . 3
⊢ (𝜑 → (𝑦 ∈ 𝐽 ↦ (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝑈)) ∈ V) |
| 3 | | matgsum.a |
. . . . 5
⊢ 𝐴 = (𝑁 Mat 𝑅) |
| 4 | 3 | ovexi 7465 |
. . . 4
⊢ 𝐴 ∈ V |
| 5 | 4 | a1i 11 |
. . 3
⊢ (𝜑 → 𝐴 ∈ V) |
| 6 | | ovexd 7466 |
. . 3
⊢ (𝜑 → (𝑅 freeLMod (𝑁 × 𝑁)) ∈ V) |
| 7 | | matgsum.i |
. . . . 5
⊢ (𝜑 → 𝑁 ∈ Fin) |
| 8 | | matgsum.r |
. . . . 5
⊢ (𝜑 → 𝑅 ∈ Ring) |
| 9 | | eqid 2737 |
. . . . . 6
⊢ (𝑅 freeLMod (𝑁 × 𝑁)) = (𝑅 freeLMod (𝑁 × 𝑁)) |
| 10 | 3, 9 | matbas 22417 |
. . . . 5
⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring) →
(Base‘(𝑅 freeLMod
(𝑁 × 𝑁))) = (Base‘𝐴)) |
| 11 | 7, 8, 10 | syl2anc 584 |
. . . 4
⊢ (𝜑 → (Base‘(𝑅 freeLMod (𝑁 × 𝑁))) = (Base‘𝐴)) |
| 12 | 11 | eqcomd 2743 |
. . 3
⊢ (𝜑 → (Base‘𝐴) = (Base‘(𝑅 freeLMod (𝑁 × 𝑁)))) |
| 13 | 3, 9 | matplusg 22418 |
. . . . 5
⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring) →
(+g‘(𝑅
freeLMod (𝑁 × 𝑁))) = (+g‘𝐴)) |
| 14 | 7, 8, 13 | syl2anc 584 |
. . . 4
⊢ (𝜑 →
(+g‘(𝑅
freeLMod (𝑁 × 𝑁))) = (+g‘𝐴)) |
| 15 | 14 | eqcomd 2743 |
. . 3
⊢ (𝜑 → (+g‘𝐴) = (+g‘(𝑅 freeLMod (𝑁 × 𝑁)))) |
| 16 | 2, 5, 6, 12, 15 | gsumpropd 18691 |
. 2
⊢ (𝜑 → (𝐴 Σg (𝑦 ∈ 𝐽 ↦ (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝑈))) = ((𝑅 freeLMod (𝑁 × 𝑁)) Σg (𝑦 ∈ 𝐽 ↦ (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝑈)))) |
| 17 | | mpompts 8090 |
. . . . . 6
⊢ (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝑈) = (𝑧 ∈ (𝑁 × 𝑁) ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈) |
| 18 | 17 | a1i 11 |
. . . . 5
⊢ (𝜑 → (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝑈) = (𝑧 ∈ (𝑁 × 𝑁) ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈)) |
| 19 | 18 | mpteq2dv 5244 |
. . . 4
⊢ (𝜑 → (𝑦 ∈ 𝐽 ↦ (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝑈)) = (𝑦 ∈ 𝐽 ↦ (𝑧 ∈ (𝑁 × 𝑁) ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈))) |
| 20 | 19 | oveq2d 7447 |
. . 3
⊢ (𝜑 → ((𝑅 freeLMod (𝑁 × 𝑁)) Σg (𝑦 ∈ 𝐽 ↦ (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝑈))) = ((𝑅 freeLMod (𝑁 × 𝑁)) Σg (𝑦 ∈ 𝐽 ↦ (𝑧 ∈ (𝑁 × 𝑁) ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈)))) |
| 21 | | eqid 2737 |
. . . 4
⊢
(Base‘(𝑅
freeLMod (𝑁 × 𝑁))) = (Base‘(𝑅 freeLMod (𝑁 × 𝑁))) |
| 22 | | eqid 2737 |
. . . 4
⊢
(0g‘(𝑅 freeLMod (𝑁 × 𝑁))) = (0g‘(𝑅 freeLMod (𝑁 × 𝑁))) |
| 23 | | xpfi 9358 |
. . . . 5
⊢ ((𝑁 ∈ Fin ∧ 𝑁 ∈ Fin) → (𝑁 × 𝑁) ∈ Fin) |
| 24 | 7, 7, 23 | syl2anc 584 |
. . . 4
⊢ (𝜑 → (𝑁 × 𝑁) ∈ Fin) |
| 25 | | matgsum.f |
. . . . . 6
⊢ ((𝜑 ∧ 𝑦 ∈ 𝐽) → (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝑈) ∈ 𝐵) |
| 26 | | matgsum.b |
. . . . . 6
⊢ 𝐵 = (Base‘𝐴) |
| 27 | 25, 26 | eleqtrdi 2851 |
. . . . 5
⊢ ((𝜑 ∧ 𝑦 ∈ 𝐽) → (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝑈) ∈ (Base‘𝐴)) |
| 28 | 17 | eqcomi 2746 |
. . . . . 6
⊢ (𝑧 ∈ (𝑁 × 𝑁) ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝑈) |
| 29 | 28 | a1i 11 |
. . . . 5
⊢ ((𝜑 ∧ 𝑦 ∈ 𝐽) → (𝑧 ∈ (𝑁 × 𝑁) ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝑈)) |
| 30 | 7, 8 | jca 511 |
. . . . . . 7
⊢ (𝜑 → (𝑁 ∈ Fin ∧ 𝑅 ∈ Ring)) |
| 31 | 30 | adantr 480 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑦 ∈ 𝐽) → (𝑁 ∈ Fin ∧ 𝑅 ∈ Ring)) |
| 32 | 31, 10 | syl 17 |
. . . . 5
⊢ ((𝜑 ∧ 𝑦 ∈ 𝐽) → (Base‘(𝑅 freeLMod (𝑁 × 𝑁))) = (Base‘𝐴)) |
| 33 | 27, 29, 32 | 3eltr4d 2856 |
. . . 4
⊢ ((𝜑 ∧ 𝑦 ∈ 𝐽) → (𝑧 ∈ (𝑁 × 𝑁) ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈) ∈ (Base‘(𝑅 freeLMod (𝑁 × 𝑁)))) |
| 34 | | matgsum.w |
. . . . . 6
⊢ (𝜑 → (𝑦 ∈ 𝐽 ↦ (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝑈)) finSupp 0 ) |
| 35 | 28 | mpteq2i 5247 |
. . . . . 6
⊢ (𝑦 ∈ 𝐽 ↦ (𝑧 ∈ (𝑁 × 𝑁) ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈)) = (𝑦 ∈ 𝐽 ↦ (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝑈)) |
| 36 | | matgsum.z |
. . . . . . 7
⊢ 0 =
(0g‘𝐴) |
| 37 | 36 | eqcomi 2746 |
. . . . . 6
⊢
(0g‘𝐴) = 0 |
| 38 | 34, 35, 37 | 3brtr4g 5177 |
. . . . 5
⊢ (𝜑 → (𝑦 ∈ 𝐽 ↦ (𝑧 ∈ (𝑁 × 𝑁) ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈)) finSupp (0g‘𝐴)) |
| 39 | 3, 9 | mat0 22423 |
. . . . . 6
⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring) →
(0g‘(𝑅
freeLMod (𝑁 × 𝑁))) = (0g‘𝐴)) |
| 40 | 7, 8, 39 | syl2anc 584 |
. . . . 5
⊢ (𝜑 →
(0g‘(𝑅
freeLMod (𝑁 × 𝑁))) = (0g‘𝐴)) |
| 41 | 38, 40 | breqtrrd 5171 |
. . . 4
⊢ (𝜑 → (𝑦 ∈ 𝐽 ↦ (𝑧 ∈ (𝑁 × 𝑁) ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈)) finSupp (0g‘(𝑅 freeLMod (𝑁 × 𝑁)))) |
| 42 | 9, 21, 22, 24, 1, 8, 33, 41 | frlmgsum 21792 |
. . 3
⊢ (𝜑 → ((𝑅 freeLMod (𝑁 × 𝑁)) Σg (𝑦 ∈ 𝐽 ↦ (𝑧 ∈ (𝑁 × 𝑁) ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈))) = (𝑧 ∈ (𝑁 × 𝑁) ↦ (𝑅 Σg (𝑦 ∈ 𝐽 ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈)))) |
| 43 | 20, 42 | eqtrd 2777 |
. 2
⊢ (𝜑 → ((𝑅 freeLMod (𝑁 × 𝑁)) Σg (𝑦 ∈ 𝐽 ↦ (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝑈))) = (𝑧 ∈ (𝑁 × 𝑁) ↦ (𝑅 Σg (𝑦 ∈ 𝐽 ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈)))) |
| 44 | | fvex 6919 |
. . . . . . . 8
⊢
(2nd ‘𝑧) ∈ V |
| 45 | | csbov2g 7479 |
. . . . . . . 8
⊢
((2nd ‘𝑧) ∈ V →
⦋(2nd ‘𝑧) / 𝑗⦌(𝑅 Σg (𝑦 ∈ 𝐽 ↦ 𝑈)) = (𝑅 Σg
⦋(2nd ‘𝑧) / 𝑗⦌(𝑦 ∈ 𝐽 ↦ 𝑈))) |
| 46 | 44, 45 | ax-mp 5 |
. . . . . . 7
⊢
⦋(2nd ‘𝑧) / 𝑗⦌(𝑅 Σg (𝑦 ∈ 𝐽 ↦ 𝑈)) = (𝑅 Σg
⦋(2nd ‘𝑧) / 𝑗⦌(𝑦 ∈ 𝐽 ↦ 𝑈)) |
| 47 | 46 | csbeq2i 3907 |
. . . . . 6
⊢
⦋(1st ‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌(𝑅 Σg
(𝑦 ∈ 𝐽 ↦ 𝑈)) = ⦋(1st
‘𝑧) / 𝑖⦌(𝑅 Σg
⦋(2nd ‘𝑧) / 𝑗⦌(𝑦 ∈ 𝐽 ↦ 𝑈)) |
| 48 | | fvex 6919 |
. . . . . . 7
⊢
(1st ‘𝑧) ∈ V |
| 49 | | csbov2g 7479 |
. . . . . . 7
⊢
((1st ‘𝑧) ∈ V →
⦋(1st ‘𝑧) / 𝑖⦌(𝑅 Σg
⦋(2nd ‘𝑧) / 𝑗⦌(𝑦 ∈ 𝐽 ↦ 𝑈)) = (𝑅 Σg
⦋(1st ‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌(𝑦 ∈ 𝐽 ↦ 𝑈))) |
| 50 | 48, 49 | ax-mp 5 |
. . . . . 6
⊢
⦋(1st ‘𝑧) / 𝑖⦌(𝑅 Σg
⦋(2nd ‘𝑧) / 𝑗⦌(𝑦 ∈ 𝐽 ↦ 𝑈)) = (𝑅 Σg
⦋(1st ‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌(𝑦 ∈ 𝐽 ↦ 𝑈)) |
| 51 | | csbmpt2 5563 |
. . . . . . . . . 10
⊢
((2nd ‘𝑧) ∈ V →
⦋(2nd ‘𝑧) / 𝑗⦌(𝑦 ∈ 𝐽 ↦ 𝑈) = (𝑦 ∈ 𝐽 ↦ ⦋(2nd
‘𝑧) / 𝑗⦌𝑈)) |
| 52 | 44, 51 | ax-mp 5 |
. . . . . . . . 9
⊢
⦋(2nd ‘𝑧) / 𝑗⦌(𝑦 ∈ 𝐽 ↦ 𝑈) = (𝑦 ∈ 𝐽 ↦ ⦋(2nd
‘𝑧) / 𝑗⦌𝑈) |
| 53 | 52 | csbeq2i 3907 |
. . . . . . . 8
⊢
⦋(1st ‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌(𝑦 ∈ 𝐽 ↦ 𝑈) = ⦋(1st
‘𝑧) / 𝑖⦌(𝑦 ∈ 𝐽 ↦ ⦋(2nd
‘𝑧) / 𝑗⦌𝑈) |
| 54 | | csbmpt2 5563 |
. . . . . . . . 9
⊢
((1st ‘𝑧) ∈ V →
⦋(1st ‘𝑧) / 𝑖⦌(𝑦 ∈ 𝐽 ↦ ⦋(2nd
‘𝑧) / 𝑗⦌𝑈) = (𝑦 ∈ 𝐽 ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈)) |
| 55 | 48, 54 | ax-mp 5 |
. . . . . . . 8
⊢
⦋(1st ‘𝑧) / 𝑖⦌(𝑦 ∈ 𝐽 ↦ ⦋(2nd
‘𝑧) / 𝑗⦌𝑈) = (𝑦 ∈ 𝐽 ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈) |
| 56 | 53, 55 | eqtri 2765 |
. . . . . . 7
⊢
⦋(1st ‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌(𝑦 ∈ 𝐽 ↦ 𝑈) = (𝑦 ∈ 𝐽 ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈) |
| 57 | 56 | oveq2i 7442 |
. . . . . 6
⊢ (𝑅 Σg
⦋(1st ‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌(𝑦 ∈ 𝐽 ↦ 𝑈)) = (𝑅 Σg (𝑦 ∈ 𝐽 ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈)) |
| 58 | 47, 50, 57 | 3eqtrri 2770 |
. . . . 5
⊢ (𝑅 Σg
(𝑦 ∈ 𝐽 ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈)) = ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌(𝑅 Σg
(𝑦 ∈ 𝐽 ↦ 𝑈)) |
| 59 | 58 | mpteq2i 5247 |
. . . 4
⊢ (𝑧 ∈ (𝑁 × 𝑁) ↦ (𝑅 Σg (𝑦 ∈ 𝐽 ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈))) = (𝑧 ∈ (𝑁 × 𝑁) ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌(𝑅 Σg
(𝑦 ∈ 𝐽 ↦ 𝑈))) |
| 60 | | mpompts 8090 |
. . . 4
⊢ (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ (𝑅 Σg (𝑦 ∈ 𝐽 ↦ 𝑈))) = (𝑧 ∈ (𝑁 × 𝑁) ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌(𝑅 Σg
(𝑦 ∈ 𝐽 ↦ 𝑈))) |
| 61 | 59, 60 | eqtr4i 2768 |
. . 3
⊢ (𝑧 ∈ (𝑁 × 𝑁) ↦ (𝑅 Σg (𝑦 ∈ 𝐽 ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈))) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ (𝑅 Σg (𝑦 ∈ 𝐽 ↦ 𝑈))) |
| 62 | 61 | a1i 11 |
. 2
⊢ (𝜑 → (𝑧 ∈ (𝑁 × 𝑁) ↦ (𝑅 Σg (𝑦 ∈ 𝐽 ↦ ⦋(1st
‘𝑧) / 𝑖⦌⦋(2nd
‘𝑧) / 𝑗⦌𝑈))) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ (𝑅 Σg (𝑦 ∈ 𝐽 ↦ 𝑈)))) |
| 63 | 16, 43, 62 | 3eqtrd 2781 |
1
⊢ (𝜑 → (𝐴 Σg (𝑦 ∈ 𝐽 ↦ (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝑈))) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ (𝑅 Σg (𝑦 ∈ 𝐽 ↦ 𝑈)))) |