LINKS BETWEEN DYNAMIC PHYSICAL SYSTEMS AND OPERATOR THEORY ISSUES CONCERNING ENERGY BALANCES AND STABILITY


De la Sen M.

9th WSEAS International Conference on Distance Learning and Web Engineering, Budapest, Hungary, 3 - 05 September 2009, pp.13-17 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Budapest
  • Country: Hungary
  • Page Numbers: pp.13-17

Abstract

This paper relates properties of operators with the well- known concepts of positive realness and passivity properties in dynamic systems and their associate transfer functions. Those concepts together with very close related ones are first examined from a physical point of view. Then, they are related with hyperstability and properties of transfer functions while the hyperstability theorem is revisited and interpreted. Finally, the above concepts are compared to the mathematical concepts of positivity and closely related ones in operator theory in Hilbert spaces.