Theorem his1i 31119

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 31101	. 2 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → (𝐴 ·ih 𝐵) = (∗‘(𝐵 ·ih 𝐴)))
4	1, 2, 3	mp2an 692	1 ⊢ (𝐴 ·ih 𝐵) = (∗‘(𝐵 ·ih 𝐴))

Syntax hints:   = wceq 1540   ∈ wcel 2108  ‘cfv 6561  (class class class)co 7431  ∗ccj 15135   ℋchba 30938   ·_ih csp 30941

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-his1 31101

This theorem depends on definitions:  df-bi 207  df-an 396

This theorem is referenced by:  normlem2  31130  bcseqi  31139  bcsiALT  31198  pjadjii  31693  lnopunilem1  32029  lnophmlem2  32036