As part of our ongoing service to the quantum information community, we here at the Quantum Pontiff would be remiss if we didn’t remind you of important upcoming deadlines. We all know that there is a certain event coming in February of 2014, and that we had better prepare for it; the submission deadline is fast approaching.

Therefore, let me take the opportunity to remind you that the deadline to submit to the special issue of the journal *Symmetry* called “Physics based on two-by-two matrices” is 28 February 2014.

Articles based on two-by-two matrices are invited. … It is generally assumed that the mathematics of this two-by-two matrix is well known. Get the eigenvalues by solving a quadratic equation, and then diagonalize the matrix by a rotation. This is not always possible. First of all, there are two-by-two matrixes that cannot be diagonalized. For some instances, the rotation alone is not enough for us to diagonalize the matrix. It is thus possible to gain a new insight to physics while dealing with these mathematical problems.

I, for one, am really looking forward to this special issue. And lucky for us, it will be open access, with an article processing charge of only 500 Swiss Francs. That’s just 125 CHF per entry of the matrix! Maybe we’ll gain deep new insights about such old classics as , or tackle the troublesome and non-normal beast, . Who knows? Please put any rumors you have about great new 2×2 matrix results in the comments.