Theorem strlem2 5692

Description: Lemma for strong state theorem.

Hypothesis

Ref	Expression
strlem2.1	⊢ S = {⟨x, y⟩∣(x ∈ Cℋ ∧ y = ((norm ‘((Proj ‘x) ‘u))↑2))}

Assertion

Ref	Expression
strlem2	⊢ (C ∈ Cℋ → (S ‘C) = ((norm ‘((Proj ‘C) ‘u))↑2))

Distinct variable group(s):   x,y,C   x,u,y

Proof of Theorem strlem2

Step	Hyp	Ref	Expression
1		fveq2 2832	. . . . 5 ⊢ (x = C → (Proj ‘x) = (Proj ‘C))
2	1	fveq1d 2834	. . . 4 ⊢ (x = C → ((Proj ‘x) ‘u) = ((Proj ‘C) ‘u))
3	2	fveq2d 2836	. . 3 ⊢ (x = C → (norm ‘((Proj ‘x) ‘u)) = (norm ‘((Proj ‘C) ‘u)))
4	3	opreq1d 3012	. 2 ⊢ (x = C → ((norm ‘((Proj ‘x) ‘u))↑2) = ((norm ‘((Proj ‘C) ‘u))↑2))
5		strlem2.1	. 2 ⊢ S = {⟨x, y⟩∣(x ∈ Cℋ ∧ y = ((norm ‘((Proj ‘x) ‘u))↑2))}
6		oprex 3018	. 2 ⊢ ((norm ‘((Proj ‘C) ‘u))↑2) ∈ V
7	4, 5, 6	fvopab4 2871	1 ⊢ (C ∈ Cℋ → (S ‘C) = ((norm ‘((Proj ‘C) ‘u))↑2))

Syntax hints:   → wi 2   ∧ wa 196   = wceq 1091   ∈ wcel 1092  {copab 2055   ‘cfv 2422  (class class class)co 3001  2c2 4454  ↑cexp 4675  normcno 4964   C_ℋ cch 4968  Projcpj 4976

This theorem is referenced by:  strlem3a 5693  strlem4 5695  strlem5 5696  jplem2 5702

This theorem was proved from axioms:  ax-1 3  ax-2 4  ax-3 5  ax-mp 6  ax-4 673  ax-5 674  ax-6 675  ax-7 676  ax-gen 677  ax-8 798  ax-9 799  ax-10 800  ax-11 801  ax-12 802  ax-13 804  ax-14 805  ax-16 922  ax-17 925  ax-ext 1074  ax-rep 1075  ax-un 1076  ax-pow 1077

This theorem depends on definitions:  df-bi 128  df-or 197  df-an 198  df-ex 679  df-sb 853  df-eu 1009  df-mo 1010  df-clab 1093  df-cleq 1097  df-clel 1099  df-rex 1206  df-v 1349  df-dif 1489  df-un 1490  df-in 1491  df-ss 1492  df-nul 1708  df-pw 1799  df-sn 1811  df-pr 1812  df-op 1815  df-uni 1920  df-br 2063  df-opab 2098  df-id 2125  df-xp 2424  df-rel 2425  df-cnv 2426  df-co 2427  df-dm 2428  df-rn 2429  df-res 2430  df-ima 2431  df-fun 2432  df-fv 2438  df-opr 3003

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