Theorem mdetleib 21198

Description: Full substitution of our determinant definition (also known as Leibniz' Formula, expanding by columns). Proposition 4.6 in [Lang] p. 514. (Contributed by Stefan O'Rear, 3-Oct-2015.) (Revised by SO, 9-Jul-2018.)

Hypotheses

Ref	Expression
mdetfval.d	⊢ 𝐷 = (𝑁 maDet 𝑅)
mdetfval.a	⊢ 𝐴 = (𝑁 Mat 𝑅)
mdetfval.b	⊢ 𝐵 = (Base‘𝐴)
mdetfval.p	⊢ 𝑃 = (Base‘(SymGrp‘𝑁))
mdetfval.y	⊢ 𝑌 = (ℤRHom‘𝑅)
mdetfval.s	⊢ 𝑆 = (pmSgn‘𝑁)
mdetfval.t	⊢ · = (.r‘𝑅)
mdetfval.u	⊢ 𝑈 = (mulGrp‘𝑅)

Assertion

Ref	Expression
mdetleib	⊢ (𝑀 ∈ 𝐵 → (𝐷‘𝑀) = (𝑅 Σg (𝑝 ∈ 𝑃 ↦ (((𝑌 ∘ 𝑆)‘𝑝) · (𝑈 Σg (𝑥 ∈ 𝑁 ↦ ((𝑝‘𝑥)𝑀𝑥)))))))

Distinct variable groups:   𝑥,𝑝,𝑀   𝑁,𝑝,𝑥   𝑅,𝑝,𝑥

Allowed substitution hints:   𝐴(𝑥,𝑝)   𝐵(𝑥,𝑝)   𝐷(𝑥,𝑝)   𝑃(𝑥,𝑝)   𝑆(𝑥,𝑝)   · (𝑥,𝑝)   𝑈(𝑥,𝑝)   𝑌(𝑥,𝑝)

Proof of Theorem mdetleib

Dummy variable 𝑚 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		oveq 7164	. . . . . . 7 ⊢ (𝑚 = 𝑀 → ((𝑝‘𝑥)𝑚𝑥) = ((𝑝‘𝑥)𝑀𝑥))
2	1	mpteq2dv 5164	. . . . . 6 ⊢ (𝑚 = 𝑀 → (𝑥 ∈ 𝑁 ↦ ((𝑝‘𝑥)𝑚𝑥)) = (𝑥 ∈ 𝑁 ↦ ((𝑝‘𝑥)𝑀𝑥)))
3	2	oveq2d 7174	. . . . 5 ⊢ (𝑚 = 𝑀 → (𝑈 Σg (𝑥 ∈ 𝑁 ↦ ((𝑝‘𝑥)𝑚𝑥))) = (𝑈 Σg (𝑥 ∈ 𝑁 ↦ ((𝑝‘𝑥)𝑀𝑥))))
4	3	oveq2d 7174	. . . 4 ⊢ (𝑚 = 𝑀 → (((𝑌 ∘ 𝑆)‘𝑝) · (𝑈 Σg (𝑥 ∈ 𝑁 ↦ ((𝑝‘𝑥)𝑚𝑥)))) = (((𝑌 ∘ 𝑆)‘𝑝) · (𝑈 Σg (𝑥 ∈ 𝑁 ↦ ((𝑝‘𝑥)𝑀𝑥)))))
5	4	mpteq2dv 5164	. . 3 ⊢ (𝑚 = 𝑀 → (𝑝 ∈ 𝑃 ↦ (((𝑌 ∘ 𝑆)‘𝑝) · (𝑈 Σg (𝑥 ∈ 𝑁 ↦ ((𝑝‘𝑥)𝑚𝑥))))) = (𝑝 ∈ 𝑃 ↦ (((𝑌 ∘ 𝑆)‘𝑝) · (𝑈 Σg (𝑥 ∈ 𝑁 ↦ ((𝑝‘𝑥)𝑀𝑥))))))
6	5	oveq2d 7174	. 2 ⊢ (𝑚 = 𝑀 → (𝑅 Σg (𝑝 ∈ 𝑃 ↦ (((𝑌 ∘ 𝑆)‘𝑝) · (𝑈 Σg (𝑥 ∈ 𝑁 ↦ ((𝑝‘𝑥)𝑚𝑥)))))) = (𝑅 Σg (𝑝 ∈ 𝑃 ↦ (((𝑌 ∘ 𝑆)‘𝑝) · (𝑈 Σg (𝑥 ∈ 𝑁 ↦ ((𝑝‘𝑥)𝑀𝑥)))))))
7		mdetfval.d	. . 3 ⊢ 𝐷 = (𝑁 maDet 𝑅)
8		mdetfval.a	. . 3 ⊢ 𝐴 = (𝑁 Mat 𝑅)
9		mdetfval.b	. . 3 ⊢ 𝐵 = (Base‘𝐴)
10		mdetfval.p	. . 3 ⊢ 𝑃 = (Base‘(SymGrp‘𝑁))
11		mdetfval.y	. . 3 ⊢ 𝑌 = (ℤRHom‘𝑅)
12		mdetfval.s	. . 3 ⊢ 𝑆 = (pmSgn‘𝑁)
13		mdetfval.t	. . 3 ⊢ · = (.r‘𝑅)
14		mdetfval.u	. . 3 ⊢ 𝑈 = (mulGrp‘𝑅)
15	7, 8, 9, 10, 11, 12, 13, 14	mdetfval 21197	. 2 ⊢ 𝐷 = (𝑚 ∈ 𝐵 ↦ (𝑅 Σg (𝑝 ∈ 𝑃 ↦ (((𝑌 ∘ 𝑆)‘𝑝) · (𝑈 Σg (𝑥 ∈ 𝑁 ↦ ((𝑝‘𝑥)𝑚𝑥)))))))
16		ovex 7191	. 2 ⊢ (𝑅 Σg (𝑝 ∈ 𝑃 ↦ (((𝑌 ∘ 𝑆)‘𝑝) · (𝑈 Σg (𝑥 ∈ 𝑁 ↦ ((𝑝‘𝑥)𝑀𝑥)))))) ∈ V
17	6, 15, 16	fvmpt 6770	1 ⊢ (𝑀 ∈ 𝐵 → (𝐷‘𝑀) = (𝑅 Σg (𝑝 ∈ 𝑃 ↦ (((𝑌 ∘ 𝑆)‘𝑝) · (𝑈 Σg (𝑥 ∈ 𝑁 ↦ ((𝑝‘𝑥)𝑀𝑥)))))))

Syntax hints:   → wi 4   = wceq 1537   ∈ wcel 2114   ↦ cmpt 5148   ∘ ccom 5561  ‘cfv 6357  (class class class)co 7158  Basecbs 16485  ._rcmulr 16568   Σ_g cgsu 16716  SymGrpcsymg 18497  pmSgncpsgn 18619  mulGrpcmgp 19241  ℤRHomczrh 20649   Mat cmat 21018   maDet cmdat 21195

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 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-rep 5192  ax-sep 5205  ax-nul 5212  ax-pow 5268  ax-pr 5332

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ne 3019  df-ral 3145  df-rex 3146  df-reu 3147  df-rab 3149  df-v 3498  df-sbc 3775  df-csb 3886  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-nul 4294  df-if 4470  df-sn 4570  df-pr 4572  df-op 4576  df-uni 4841  df-iun 4923  df-br 5069  df-opab 5131  df-mpt 5149  df-id 5462  df-xp 5563  df-rel 5564  df-cnv 5565  df-co 5566  df-dm 5567  df-rn 5568  df-res 5569  df-ima 5570  df-iota 6316  df-fun 6359  df-fn 6360  df-f 6361  df-f1 6362  df-fo 6363  df-f1o 6364  df-fv 6365  df-ov 7161  df-oprab 7162  df-mpo 7163  df-slot 16489  df-base 16491  df-mat 21019  df-mdet 21196

This theorem is referenced by:  mdetleib2  21199  m1detdiag  21208  mdetdiag  21210  mdetralt  21219  mdettpos  21222  chpmatval2  21443  mdetpmtr1  31090