Let $a = [a_1,a_2,\dots,a_n]^T$, $b = [b_1, b_2, \dots, b_n]^T$.
and $C = \begin{bmatrix}c_1^Tc_1 & c_1^Tc_2 & \dots & c_1^Tc_n\\c_2^Tc_1 & c_2^Tc_2 & \dots & c_2^Tc_n\\ \vdots & \vdots & \ddots & \vdots\\c_n^Tc_1 & c_n^Tc_2 & \dots & c_n^Tc_n\end{bmatrix}$
Where ($c_i$) is a list of vectors of the same size.
In order to get $a_i = b_i - \sum_{j = 1}^na_jc_j^Tc_i$
Should it be $a = b - C^Ta$ ? In the book which I am reading, they write $a = b - Ca$.
Please just give me a confirmation, am I correct?