English
For weight w ≡ 1, the weighted inner product equals the standard inner product on the direct sum, i.e., ⟪f, g⟫_{𝕜,1} = ⟪WithLp.toLp 2 f, WithLp.toLp 2 g⟫.
Русский
При весе w ≡ 1 взвешенное скалярное произведение совпадает с обычным скалярным на сумме, т. е. ⟪f,g⟫_{𝕜,1} = ⟪WithLp.toLp 2 f, WithLp.toLp 2 g⟫.
LaTeX
$$$⟪f, g⟫_{𝕜, 1} = ⟪WithLp.toLp 2 f, WithLp.toLp 2 g⟫_{𝕜}$$$
Lean4
@[simp]
theorem wInner_one_const_left (a : 𝕜) (f : ι → 𝕜) : ⟪const _ a, f⟫_[𝕜] = (∑ i, f i) * conj a := by
simp [wInner_one_eq_sum, sum_mul]