Theorem pwsval 16506

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 3429	. . 3 ⊢ (𝑅 ∈ 𝑉 → 𝑅 ∈ V)
3		elex 3429	. . 3 ⊢ (𝐼 ∈ 𝑊 → 𝐼 ∈ V)
4		simpl 476	. . . . . . 7 ⊢ ((𝑟 = 𝑅 ∧ 𝑖 = 𝐼) → 𝑟 = 𝑅)
5	4	fveq2d 6441	. . . . . 6 ⊢ ((𝑟 = 𝑅 ∧ 𝑖 = 𝐼) → (Scalar‘𝑟) = (Scalar‘𝑅))
6		pwsval.f	. . . . . 6 ⊢ 𝐹 = (Scalar‘𝑅)
7	5, 6	syl6eqr 2879	. . . . 5 ⊢ ((𝑟 = 𝑅 ∧ 𝑖 = 𝐼) → (Scalar‘𝑟) = 𝐹)
8		id 22	. . . . . 6 ⊢ (𝑖 = 𝐼 → 𝑖 = 𝐼)
9		sneq 4409	. . . . . 6 ⊢ (𝑟 = 𝑅 → {𝑟} = {𝑅})
10		xpeq12 5371	. . . . . 6 ⊢ ((𝑖 = 𝐼 ∧ {𝑟} = {𝑅}) → (𝑖 × {𝑟}) = (𝐼 × {𝑅}))
11	8, 9, 10	syl2anr 590	. . . . 5 ⊢ ((𝑟 = 𝑅 ∧ 𝑖 = 𝐼) → (𝑖 × {𝑟}) = (𝐼 × {𝑅}))
12	7, 11	oveq12d 6928	. . . 4 ⊢ ((𝑟 = 𝑅 ∧ 𝑖 = 𝐼) → ((Scalar‘𝑟)Xs(𝑖 × {𝑟})) = (𝐹Xs(𝐼 × {𝑅})))
13		df-pws 16470	. . . 4 ⊢ ↑s = (𝑟 ∈ V, 𝑖 ∈ V ↦ ((Scalar‘𝑟)Xs(𝑖 × {𝑟})))
14		ovex 6942	. . . 4 ⊢ (𝐹Xs(𝐼 × {𝑅})) ∈ V
15	12, 13, 14	ovmpt2a 7056	. . 3 ⊢ ((𝑅 ∈ V ∧ 𝐼 ∈ V) → (𝑅 ↑s 𝐼) = (𝐹Xs(𝐼 × {𝑅})))
16	2, 3, 15	syl2an 589	. 2 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐼 ∈ 𝑊) → (𝑅 ↑s 𝐼) = (𝐹Xs(𝐼 × {𝑅})))
17	1, 16	syl5eq 2873	1 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐼 ∈ 𝑊) → 𝑌 = (𝐹Xs(𝐼 × {𝑅})))

Syntax hints:   → wi 4   ∧ wa 386   = wceq 1656   ∈ wcel 2164  Vcvv 3414  {csn 4399   × cxp 5344  ‘cfv 6127  (class class class)co 6910  Scalarcsca 16315  X_scprds 16466   ↑_s cpws 16467

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1894  ax-4 1908  ax-5 2009  ax-6 2075  ax-7 2112  ax-9 2173  ax-10 2192  ax-11 2207  ax-12 2220  ax-13 2389  ax-ext 2803  ax-sep 5007  ax-nul 5015  ax-pr 5129

This theorem depends on definitions:  df-bi 199  df-an 387  df-or 879  df-3an 1113  df-tru 1660  df-ex 1879  df-nf 1883  df-sb 2068  df-mo 2605  df-eu 2640  df-clab 2812  df-cleq 2818  df-clel 2821  df-nfc 2958  df-ral 3122  df-rex 3123  df-rab 3126  df-v 3416  df-sbc 3663  df-dif 3801  df-un 3803  df-in 3805  df-ss 3812  df-nul 4147  df-if 4309  df-sn 4400  df-pr 4402  df-op 4406  df-uni 4661  df-br 4876  df-opab 4938  df-id 5252  df-xp 5352  df-rel 5353  df-cnv 5354  df-co 5355  df-dm 5356  df-iota 6090  df-fun 6129  df-fv 6135  df-ov 6913  df-oprab 6914  df-mpt2 6915  df-pws 16470

This theorem is referenced by:  pwsbas  16507  pwsplusgval  16510  pwsmulrval  16511  pwsle  16512  pwsvscafval  16514  pwssca  16516  pwsmnd  17685  pws0g  17686  pwspjmhm  17728  pwsgrp  17888  pwsinvg  17889  pwscmn  18626  pwsabl  18627  pwsgsum  18738  pwsring  18976  pws1  18977  pwscrng  18978  pwsmgp  18979  pwslmod  19336  frlmpws  20464  frlmlss  20465  frlmpwsfi  20466  frlmbas  20469  frlmip  20491  pwstps  21811  resspwsds  22554  pwsxms  22714  pwsms  22715  rrxprds  23564  cnpwstotbnd  34133  repwsmet  34170  rrnequiv  34171