Correction: Siudzińska, K. Equivalence Relations Between Conical 2-Designs and Mutually Unbiased Generalized Equiangular Tight Frames. Mathematics 2026, 14, 128

Text Correction

There was an error in the original publication [1]. The operators in Example 2, Equation (33), were given incorrectly. A correction has been made to Equation (33) in Section 4, Example 2:

$$\begin{array}{cc}\hfill R_1& ={\displaystyle \frac{\sqrt{5}}{3\sqrt{2}}}\left(\begin{array}{cc}1& 0\\ 0& 0\end{array}\right),R_3={\displaystyle \frac{1}{3\sqrt{10}}}\left(\begin{array}{cc}2& -1-i\sqrt{5}\\ -1+i\sqrt{5}& 3\end{array}\right),\hfill \\ \hfill R_2& ={\displaystyle \frac{1}{6\sqrt{5}}}\left(\begin{array}{cc}4& 3\\ 3& 6\end{array}\right),R_4={\displaystyle \frac{1}{6\sqrt{5}}}\left(\begin{array}{cc}4& -2+i\sqrt{5}\\ -2-i\sqrt{5}& 6\end{array}\right).\hfill \end{array}$$

(33)

The authors state that the scientific conclusions are unaffected. This correction was approved by the Academic Editor. The original publication has also been updated.