Theorem pwsval 17650

Description: Value of a structure power. (Contributed by Mario Carneiro, 11-Jan-2015.)

Hypotheses

Ref	Expression
pwsval.y	⊢ 𝑌 = (𝑅 ↑s 𝐼)
pwsval.f	⊢ 𝐹 = (Scalar‘𝑅)

Assertion

Ref	Expression
pwsval	⊢ ((𝑅 ∈ 𝑉 ∧ 𝐼 ∈ 𝑊) → 𝑌 = (𝐹Xs(𝐼 × {𝑅})))

Proof of Theorem pwsval

Dummy variables 𝑖 𝑟 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		pwsval.y	. 2 ⊢ 𝑌 = (𝑅 ↑s 𝐼)
2		elex 3472	. . 3 ⊢ (𝑅 ∈ 𝑉 → 𝑅 ∈ V)
3		elex 3472	. . 3 ⊢ (𝐼 ∈ 𝑊 → 𝐼 ∈ V)
4		simpl 488	. . . . . . 7 ⊢ ((𝑟 = 𝑅 ∧ 𝑖 = 𝐼) → 𝑟 = 𝑅)
5	4	fveq2d 6887	. . . . . 6 ⊢ ((𝑟 = 𝑅 ∧ 𝑖 = 𝐼) → (Scalar‘𝑟) = (Scalar‘𝑅))
6		pwsval.f	. . . . . 6 ⊢ 𝐹 = (Scalar‘𝑅)
7	5, 6	eqtr4di 2814	. . . . 5 ⊢ ((𝑟 = 𝑅 ∧ 𝑖 = 𝐼) → (Scalar‘𝑟) = 𝐹)
8		id 23	. . . . . 6 ⊢ (𝑖 = 𝐼 → 𝑖 = 𝐼)
9		sneq 4594	. . . . . 6 ⊢ (𝑟 = 𝑅 → {𝑟} = {𝑅})
10		xpeq12 5676	. . . . . 6 ⊢ ((𝑖 = 𝐼 ∧ {𝑟} = {𝑅}) → (𝑖 × {𝑟}) = (𝐼 × {𝑅}))
11	8, 9, 10	syl2anr 609	. . . . 5 ⊢ ((𝑟 = 𝑅 ∧ 𝑖 = 𝐼) → (𝑖 × {𝑟}) = (𝐼 × {𝑅}))
12	7, 11	oveq12d 7436	. . . 4 ⊢ ((𝑟 = 𝑅 ∧ 𝑖 = 𝐼) → ((Scalar‘𝑟)Xs(𝑖 × {𝑟})) = (𝐹Xs(𝐼 × {𝑅})))
13		df-pws 17613	. . . 4 ⊢ ↑s = (𝑟 ∈ V, 𝑖 ∈ V ↦ ((Scalar‘𝑟)Xs(𝑖 × {𝑟})))
14		ovex 7451	. . . 4 ⊢ (𝐹Xs(𝐼 × {𝑅})) ∈ V
15	12, 13, 14	ovmpoa 7573	. . 3 ⊢ ((𝑅 ∈ V ∧ 𝐼 ∈ V) → (𝑅 ↑s 𝐼) = (𝐹Xs(𝐼 × {𝑅})))
16	2, 3, 15	syl2an 608	. 2 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐼 ∈ 𝑊) → (𝑅 ↑s 𝐼) = (𝐹Xs(𝐼 × {𝑅})))
17	1, 16	eqtrid 2808	1 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐼 ∈ 𝑊) → 𝑌 = (𝐹Xs(𝐼 × {𝑅})))

This proof depends on syntax axioms:   → wi 4   ∧ wa 401   = wceq 1570   ∈ wcel 2145  Vcvv 3451  {csn 4584   × cxp 5649  ‘cfv 6537  (class class class)co 7418  Scalarcsca 17424  X_scprds 17609   ↑_s cpws 17610

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2733  ax-sep 5249  ax-nul 5260  ax-pr 5391

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3078  df-rex 3088  df-rab 3414  df-v 3453  df-sbc 3740  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-br 5104  df-opab 5168  df-id 5546  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-iota 6493  df-fun 6539  df-fv 6545  df-ov 7421  df-oprab 7422  df-mpo 7423  df-pws 17613

This theorem is used by:  pwsbas  17651  pwsplusgval  17655  pwsmulrval  17656  pwsle  17657  pwsvscafval  17659  pwssca  17661  pwsmnd  18959  pws0g  18960  pwspjmhm  19019  pwsgrp  19255  pwsinvg  19256  pwscmn  20070  pwsabl  20071  pwsgsum  20189  pwsring  20546  pws1  20547  pwscrng  20548  pwsmgp  20549  pwslmod  21238  frlmpws  22049  frlmlss  22050  frlmpwsfi  22051  frlmbas  22054  frlmip  22077  pwstps  23942  resspwsds  24684  pwsxms  24844  pwsms  24845  rrxprds  25703  cnpwstotbnd  38711  repwsmet  38748  rrnequiv  38749