People were forming a line from early morning to buy concert tickets.

The European Union was established to deepen cooperation in both economics and politics.

A Hermitian matrix refers to a matrix that is equal to its complex conjugate transpose.

I learned an algorithm to calculate the inverse matrix.

In linear algebra, symmetric matrices play a very important role.

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

He is afflicted with a serious illness.

We should always remember the power of Kannon in difficult times.

A positive-definite matrix is an important concept in linear algebra.

A positive-semidefinite matrix is one of the important concepts in linear algebra.