Theorem asclfval 19155

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 6103	. . . . . . . 8 ⊢ (𝑤 = 𝑊 → (Scalar‘𝑤) = (Scalar‘𝑊))
3		asclfval.f	. . . . . . . 8 ⊢ 𝐹 = (Scalar‘𝑊)
4	2, 3	syl6eqr 2662	. . . . . . 7 ⊢ (𝑤 = 𝑊 → (Scalar‘𝑤) = 𝐹)
5	4	fveq2d 6107	. . . . . 6 ⊢ (𝑤 = 𝑊 → (Base‘(Scalar‘𝑤)) = (Base‘𝐹))
6		asclfval.k	. . . . . 6 ⊢ 𝐾 = (Base‘𝐹)
7	5, 6	syl6eqr 2662	. . . . 5 ⊢ (𝑤 = 𝑊 → (Base‘(Scalar‘𝑤)) = 𝐾)
8		fveq2 6103	. . . . . . 7 ⊢ (𝑤 = 𝑊 → ( ·𝑠 ‘𝑤) = ( ·𝑠 ‘𝑊))
9		asclfval.s	. . . . . . 7 ⊢ · = ( ·𝑠 ‘𝑊)
10	8, 9	syl6eqr 2662	. . . . . 6 ⊢ (𝑤 = 𝑊 → ( ·𝑠 ‘𝑤) = · )
11		eqidd 2611	. . . . . 6 ⊢ (𝑤 = 𝑊 → 𝑥 = 𝑥)
12		fveq2 6103	. . . . . . 7 ⊢ (𝑤 = 𝑊 → (1r‘𝑤) = (1r‘𝑊))
13		asclfval.o	. . . . . . 7 ⊢ 1 = (1r‘𝑊)
14	12, 13	syl6eqr 2662	. . . . . 6 ⊢ (𝑤 = 𝑊 → (1r‘𝑤) = 1 )
15	10, 11, 14	oveq123d 6570	. . . . 5 ⊢ (𝑤 = 𝑊 → (𝑥( ·𝑠 ‘𝑤)(1r‘𝑤)) = (𝑥 · 1 ))
16	7, 15	mpteq12dv 4663	. . . 4 ⊢ (𝑤 = 𝑊 → (𝑥 ∈ (Base‘(Scalar‘𝑤)) ↦ (𝑥( ·𝑠 ‘𝑤)(1r‘𝑤))) = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 )))
17		df-ascl 19135	. . . 4 ⊢ algSc = (𝑤 ∈ V ↦ (𝑥 ∈ (Base‘(Scalar‘𝑤)) ↦ (𝑥( ·𝑠 ‘𝑤)(1r‘𝑤))))
18	3	fveq2i 6106	. . . . . . 7 ⊢ (Base‘𝐹) = (Base‘(Scalar‘𝑊))
19	6, 18	eqtri 2632	. . . . . 6 ⊢ 𝐾 = (Base‘(Scalar‘𝑊))
20		fvex 6113	. . . . . 6 ⊢ (Base‘(Scalar‘𝑊)) ∈ V
21	19, 20	eqeltri 2684	. . . . 5 ⊢ 𝐾 ∈ V
22	21	mptex 6390	. . . 4 ⊢ (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 )) ∈ V
23	16, 17, 22	fvmpt 6191	. . 3 ⊢ (𝑊 ∈ V → (algSc‘𝑊) = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 )))
24		fvprc 6097	. . . . 5 ⊢ (¬ 𝑊 ∈ V → (algSc‘𝑊) = ∅)
25		mpt0 5934	. . . . 5 ⊢ (𝑥 ∈ ∅ ↦ (𝑥 · 1 )) = ∅
26	24, 25	syl6eqr 2662	. . . 4 ⊢ (¬ 𝑊 ∈ V → (algSc‘𝑊) = (𝑥 ∈ ∅ ↦ (𝑥 · 1 )))
27		fvprc 6097	. . . . . . . . 9 ⊢ (¬ 𝑊 ∈ V → (Scalar‘𝑊) = ∅)
28	3, 27	syl5eq 2656	. . . . . . . 8 ⊢ (¬ 𝑊 ∈ V → 𝐹 = ∅)
29	28	fveq2d 6107	. . . . . . 7 ⊢ (¬ 𝑊 ∈ V → (Base‘𝐹) = (Base‘∅))
30		base0 15740	. . . . . . 7 ⊢ ∅ = (Base‘∅)
31	29, 30	syl6eqr 2662	. . . . . 6 ⊢ (¬ 𝑊 ∈ V → (Base‘𝐹) = ∅)
32	6, 31	syl5eq 2656	. . . . 5 ⊢ (¬ 𝑊 ∈ V → 𝐾 = ∅)
33	32	mpteq1d 4666	. . . 4 ⊢ (¬ 𝑊 ∈ V → (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 )) = (𝑥 ∈ ∅ ↦ (𝑥 · 1 )))
34	26, 33	eqtr4d 2647	. . 3 ⊢ (¬ 𝑊 ∈ V → (algSc‘𝑊) = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 )))
35	23, 34	pm2.61i 175	. 2 ⊢ (algSc‘𝑊) = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 ))
36	1, 35	eqtri 2632	1 ⊢ 𝐴 = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 ))

Syntax hints:  ¬ wn 3   = wceq 1475   ∈ wcel 1977  Vcvv 3173  ∅c0 3874   ↦ cmpt 4643  ‘cfv 5804  (class class class)co 6549  Basecbs 15695  Scalarcsca 15771   ·_𝑠 cvsca 15772  1_rcur 18324  algSccascl 19132

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-ral 2901  df-rex 2902  df-reu 2903  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-ov 6552  df-slot 15699  df-base 15700  df-ascl 19135

This theorem is referenced by:  asclval  19156  asclfn  19157  asclf  19158  rnascl  19164  ressascl  19165  asclpropd  19167