This square matrix has the same number of rows and columns.

An identity matrix is a square matrix in which all the elements on the diagonal are 1 and all other elements are 0.

The calculation of determinants is an important part of mathematics.

He understands the importance of learning.

He is majoring in psychology.

Gaku is my best friend.

He has a deep interest in archaeology.

Linear programming is a part of operations research and is used to find the optimal solution.

Clifford algebra is a branch of mathematics, and it has a close relationship with physics.

Orthoclase is a type of mineral, mainly found in granite.