Theorem his1i 28508

Description: Conjugate law for inner product. Postulate (S1) of [Beran] p. 95. (Contributed by NM, 15-May-2005.) (New usage is discouraged.)

Hypotheses

Ref	Expression
his1.1	⊢ 𝐴 ∈ ℋ
his1.2	⊢ 𝐵 ∈ ℋ

Assertion

Ref	Expression
his1i	⊢ (𝐴 ·ih 𝐵) = (∗‘(𝐵 ·ih 𝐴))

Proof of Theorem his1i

Step	Hyp	Ref	Expression
1		his1.1	. 2 ⊢ 𝐴 ∈ ℋ
2		his1.2	. 2 ⊢ 𝐵 ∈ ℋ
3		ax-his1 28490	. 2 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → (𝐴 ·ih 𝐵) = (∗‘(𝐵 ·ih 𝐴)))
4	1, 2, 3	mp2an 683	1 ⊢ (𝐴 ·ih 𝐵) = (∗‘(𝐵 ·ih 𝐴))

Syntax hints:   = wceq 1656   ∈ wcel 2164  ‘cfv 6127  (class class class)co 6910  ∗ccj 14220   ℋchba 28327   ·_ih csp 28330

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-his1 28490

This theorem depends on definitions:  df-bi 199  df-an 387

This theorem is referenced by:  normlem2  28519  bcseqi  28528  bcsiALT  28587  pjadjii  29084  lnopunilem1  29420  lnophmlem2  29427