Lectures on Operator Theory and Its Applications
Albrecht Böttcher, Aad Dijksma, Heinz Langer, Michael A. Dritschel, James Rovnyak, M. A. Kaashoek · American Mathematical Society eBooks · 1995
Much of the importance of mathematics lies in its ability to provide theories which are useful in widely different fields of endeavor. A good example is the large and amorphous body of knowledge known as "the theory of linear operators" or "operator theory", which came to life about a century ago as a theory to encompass properties common to matrix, differential, and integral operators. Thus, it is a primary purpose of operator theory to provide a coherent body of knowledge which can explain phenomena common to the enormous variety of problems in which such linear operators play a part. The th