fix ts check

example_notes/Text completion test (Discreet Fourier transform).md

@@ -0,0 +1,33 @@
+# Discreet Fourier transform
+
+
+$$
+\begin{bmatrix}  
+\hat{f_1} \\  
+\hat{f_2} \\
+\hat{f_3} \\
+... \\
+\hat{f_n}
+\end{bmatrix}
+
+=
+
+\begin{bmatrix}  
+1 & 1 & 1 & ... & 1\\  
+1 & w_n & w_n^2 & ... & w_n^{n-1}\\
+1 & w^2_n &  w_n^4 & ... & w_n^{2(n-1)}\\
+... & ... & ... & ... & ...\\
+1 & w_n^{n-1} & w_n^{2(n-1)} & ... & w_n^{(n-1)^2}
+\end{bmatrix}
+
+\begin{bmatrix}  
+f_1 \\  
+f_2 \\
+f_3 \\
+... \\
+f_n
+\end{bmatrix}
+$$
+$$
+w_n = e^{-2j \pi / n}
+$$