\ie\cf
\newcommand{\eqdef}{\mathbin{\stackrel{\rm def}{=}}}
\newcommand{\R} % real numbers
\newcommand{\N}} % natural numbers
\newcommand{\Z} % integers
\newcommand{\F} % a field
\newcommand{\Q} % the rationals
\newcommand{\C}{\mathbb{C}} % the complexes
\newcommand{\poly}}
\newcommand{\polylog}}
\newcommand{\loglog}}}
\newcommand{\zo}{\{0,1\}}
\newcommand{\suchthat}
\newcommand{\pr}[1]{\Pr\left[#1\right]}
\newcommand{\deffont}{\em}
\newcommand{\getsr}{\mathbin{\stackrel{\mbox{\tiny R}}{\gets}}}
\newcommand{\Exp}{\mathop{\mathrm E}\displaylimits} % expectation
\newcommand{\Var}{\mathop{\mathrm Var}\displaylimits} % variance
\newcommand{\xor}{\oplus}
\newcommand{\GF}{\mathrm{GF}}
\newcommand{\eps}{\varepsilon}
\notag
\no
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Fourier Series and Orthogonal Polynomials
Starting from September 2021, I am studying Fourier Series and Orthogonal Polynomials. As always, contact me about any errors you might find in the notes!