Talk:Fejér kernel

Could someon clarify: what norm are used for $$\|F_n*f \|_{L^p([-\pi, \pi])} \le \|f\|_{L^p([-\pi, \pi])}$$ when $$f\in{\mathbf C}$$ Vorval 0 (talk) 11:35, 29 September 2011 (UTC)

I think what is meant is $$f\in\mathbf{C}\cap L^p([-\pi,\pi]).$$ — Preceding unsigned comment added by 129.2.129.30 (talk) 06:14, 30 November 2011 (UTC)

In this article, the definition of Dirichlet kernel does not have a factor of $$1/2\pi$$ while it does in the linked article. Also the definition of convolution used here does have it, but it doesn't in its own article. So which one is it? — Preceding unsigned comment added by 103.226.144.115 (talk) 15:08, 22 December 2020 (UTC)