Matrix representations for multi-degree B-splines

The paper is concerned with computing the B-spline basis of a multi-degree spline space, namely space piecewise functions comprised polynomial segments different degrees. To this aim, we provide general method to work out matrix representation relating sought another one easier compute. This will allow us, for example, calculate multi degree starting from local Bernstein bases degrees or where all sections have same degree. change can be translated into conceptually simple and computationally efficient algorithm evaluation B-splines.