Displaying similar documents to “On the Algebraical and Numerical Theory of Errors of Observations and the Combination of Observations”

Numerical index with respect to an operator

Mohammad Ali Ardalani (2014)

Studia Mathematica


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.

Numerical integration in the Trefftz finite element method

Rozehnalová, Petra


Using the high order Trefftz finite element method for solving partial differential equation requires numerical integration of oscillating functions. This integration could be performed, instead of classic techniques, also by the Levin method with some modifications. This paper shortly describes both the Trefftz method and the Levin method with its modification.