We introduce diagrams for m-cluster categories which we call "horizontal" and "vertical" mutation fans. These are analogous to the mutation fans(also known as "semi-invariant pictures" or "scattering diagrams") for th...
In this report the second-rank estimated formulas of one phase structure semiinvariants of 15 space groups in triclinic and monoclinic crystal systems are given using the algebraic derivative method. These formulas ma...