Theorem asclfval 19334

Description: Function value of the algebraic scalars function. (Contributed by Mario Carneiro, 8-Mar-2015.)

Hypotheses

Ref	Expression
asclfval.a	⊢ 𝐴 = (algSc‘𝑊)
asclfval.f	⊢ 𝐹 = (Scalar‘𝑊)
asclfval.k	⊢ 𝐾 = (Base‘𝐹)
asclfval.s	⊢ · = ( ·𝑠 ‘𝑊)
asclfval.o	⊢ 1 = (1r‘𝑊)

Assertion

Ref	Expression
asclfval	⊢ 𝐴 = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 ))

Distinct variable groups:   𝑥,𝐾   𝑥, 1   𝑥, ·   𝑥,𝑊

Allowed substitution hints:   𝐴(𝑥)   𝐹(𝑥)

Proof of Theorem asclfval

Dummy variable 𝑤 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		asclfval.a	. 2 ⊢ 𝐴 = (algSc‘𝑊)
2		fveq2 6191	. . . . . . . 8 ⊢ (𝑤 = 𝑊 → (Scalar‘𝑤) = (Scalar‘𝑊))
3		asclfval.f	. . . . . . . 8 ⊢ 𝐹 = (Scalar‘𝑊)
4	2, 3	syl6eqr 2674	. . . . . . 7 ⊢ (𝑤 = 𝑊 → (Scalar‘𝑤) = 𝐹)
5	4	fveq2d 6195	. . . . . 6 ⊢ (𝑤 = 𝑊 → (Base‘(Scalar‘𝑤)) = (Base‘𝐹))
6		asclfval.k	. . . . . 6 ⊢ 𝐾 = (Base‘𝐹)
7	5, 6	syl6eqr 2674	. . . . 5 ⊢ (𝑤 = 𝑊 → (Base‘(Scalar‘𝑤)) = 𝐾)
8		fveq2 6191	. . . . . . 7 ⊢ (𝑤 = 𝑊 → ( ·𝑠 ‘𝑤) = ( ·𝑠 ‘𝑊))
9		asclfval.s	. . . . . . 7 ⊢ · = ( ·𝑠 ‘𝑊)
10	8, 9	syl6eqr 2674	. . . . . 6 ⊢ (𝑤 = 𝑊 → ( ·𝑠 ‘𝑤) = · )
11		eqidd 2623	. . . . . 6 ⊢ (𝑤 = 𝑊 → 𝑥 = 𝑥)
12		fveq2 6191	. . . . . . 7 ⊢ (𝑤 = 𝑊 → (1r‘𝑤) = (1r‘𝑊))
13		asclfval.o	. . . . . . 7 ⊢ 1 = (1r‘𝑊)
14	12, 13	syl6eqr 2674	. . . . . 6 ⊢ (𝑤 = 𝑊 → (1r‘𝑤) = 1 )
15	10, 11, 14	oveq123d 6671	. . . . 5 ⊢ (𝑤 = 𝑊 → (𝑥( ·𝑠 ‘𝑤)(1r‘𝑤)) = (𝑥 · 1 ))
16	7, 15	mpteq12dv 4733	. . . 4 ⊢ (𝑤 = 𝑊 → (𝑥 ∈ (Base‘(Scalar‘𝑤)) ↦ (𝑥( ·𝑠 ‘𝑤)(1r‘𝑤))) = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 )))
17		df-ascl 19314	. . . 4 ⊢ algSc = (𝑤 ∈ V ↦ (𝑥 ∈ (Base‘(Scalar‘𝑤)) ↦ (𝑥( ·𝑠 ‘𝑤)(1r‘𝑤))))
18	3	fveq2i 6194	. . . . . . 7 ⊢ (Base‘𝐹) = (Base‘(Scalar‘𝑊))
19	6, 18	eqtri 2644	. . . . . 6 ⊢ 𝐾 = (Base‘(Scalar‘𝑊))
20		fvex 6201	. . . . . 6 ⊢ (Base‘(Scalar‘𝑊)) ∈ V
21	19, 20	eqeltri 2697	. . . . 5 ⊢ 𝐾 ∈ V
22	21	mptex 6486	. . . 4 ⊢ (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 )) ∈ V
23	16, 17, 22	fvmpt 6282	. . 3 ⊢ (𝑊 ∈ V → (algSc‘𝑊) = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 )))
24		fvprc 6185	. . . . 5 ⊢ (¬ 𝑊 ∈ V → (algSc‘𝑊) = ∅)
25		mpt0 6021	. . . . 5 ⊢ (𝑥 ∈ ∅ ↦ (𝑥 · 1 )) = ∅
26	24, 25	syl6eqr 2674	. . . 4 ⊢ (¬ 𝑊 ∈ V → (algSc‘𝑊) = (𝑥 ∈ ∅ ↦ (𝑥 · 1 )))
27		fvprc 6185	. . . . . . . . 9 ⊢ (¬ 𝑊 ∈ V → (Scalar‘𝑊) = ∅)
28	3, 27	syl5eq 2668	. . . . . . . 8 ⊢ (¬ 𝑊 ∈ V → 𝐹 = ∅)
29	28	fveq2d 6195	. . . . . . 7 ⊢ (¬ 𝑊 ∈ V → (Base‘𝐹) = (Base‘∅))
30		base0 15912	. . . . . . 7 ⊢ ∅ = (Base‘∅)
31	29, 30	syl6eqr 2674	. . . . . 6 ⊢ (¬ 𝑊 ∈ V → (Base‘𝐹) = ∅)
32	6, 31	syl5eq 2668	. . . . 5 ⊢ (¬ 𝑊 ∈ V → 𝐾 = ∅)
33	32	mpteq1d 4738	. . . 4 ⊢ (¬ 𝑊 ∈ V → (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 )) = (𝑥 ∈ ∅ ↦ (𝑥 · 1 )))
34	26, 33	eqtr4d 2659	. . 3 ⊢ (¬ 𝑊 ∈ V → (algSc‘𝑊) = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 )))
35	23, 34	pm2.61i 176	. 2 ⊢ (algSc‘𝑊) = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 ))
36	1, 35	eqtri 2644	1 ⊢ 𝐴 = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 ))

Syntax hints:  ¬ wn 3   = wceq 1483   ∈ wcel 1990  Vcvv 3200  ∅c0 3915   ↦ cmpt 4729  ‘cfv 5888  (class class class)co 6650  Basecbs 15857  Scalarcsca 15944   ·_𝑠 cvsca 15945  1_rcur 18501  algSccascl 19311

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-reu 2919  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-ov 6653  df-slot 15861  df-base 15863  df-ascl 19314

This theorem is referenced by:  asclval  19335  asclfn  19336  asclf  19337  rnascl  19343  ressascl  19344  asclpropd  19346