Theorem hvmulassi 27903

Description: Scalar multiplication associative law. (Contributed by NM, 3-Sep-1999.) (New usage is discouraged.)

Hypotheses

Ref	Expression
hvmulcom.1	⊢ 𝐴 ∈ ℂ
hvmulcom.2	⊢ 𝐵 ∈ ℂ
hvmulcom.3	⊢ 𝐶 ∈ ℋ

Assertion

Ref	Expression
hvmulassi	⊢ ((𝐴 · 𝐵) ·ℎ 𝐶) = (𝐴 ·ℎ (𝐵 ·ℎ 𝐶))

Proof of Theorem hvmulassi

Step	Hyp	Ref	Expression
1		hvmulcom.1	. 2 ⊢ 𝐴 ∈ ℂ
2		hvmulcom.2	. 2 ⊢ 𝐵 ∈ ℂ
3		hvmulcom.3	. 2 ⊢ 𝐶 ∈ ℋ
4		ax-hvmulass 27864	. 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℋ) → ((𝐴 · 𝐵) ·ℎ 𝐶) = (𝐴 ·ℎ (𝐵 ·ℎ 𝐶)))
5	1, 2, 3, 4	mp3an 1424	1 ⊢ ((𝐴 · 𝐵) ·ℎ 𝐶) = (𝐴 ·ℎ (𝐵 ·ℎ 𝐶))

Syntax hints:   = wceq 1483   ∈ wcel 1990  (class class class)co 6650  ℂcc 9934   · cmul 9941   ℋchil 27776   ·_ℎ csm 27778

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-hvmulass 27864

This theorem depends on definitions:  df-bi 197  df-an 386  df-3an 1039

This theorem is referenced by:  hvmul2negi  27905  hvnegdii  27919  normlem0  27966  lnophmlem2  28876