Displaying similar documents to “The programme of multiplication of two spectra in Fortran IV and its application on the solution of numerical algebraic and differential equations”

Imre Simon: an exceptional graduate student

Denis Thérien (2010)

RAIRO - Theoretical Informatics and Applications

Similarity:

This short note reviews the main contributions of the Ph.D. thesis of Imre Simon. His graduate work had major impact on algebraic theory of automata and thirty years later we are in a good position to appreciate how sensitive he was in selecting good problems, and how clever in solving them!

Numerical index with respect to an operator

Mohammad Ali Ardalani (2014)

Studia Mathematica

Similarity:

We introduce new concepts of numerical range and numerical radius of one operator with respect to another one, which generalize in a natural way the known concepts of numerical range and numerical radius. We study basic properties of these new concepts and present some examples.