Comparative results on eigenvalues,pseudospectra and conditionspectra
  Conditionspectrum measures the computational stability of solving a linear system. In this paper, ten theorems involving {\epsilon}-conditionspectrum are presented. All these theorems generalize a well known eigenvalue theorem and simultaneously compare with an appropriate pseudospectra theorem. Our organizing principle is that each conditionspectrum result precisely reduces to the corresponding eigenvalue theorem when {\epsilon} = 0. The format of each conditionspectrum result is similar to the pseudospectrum result for easy comparison. Each condition spectrum is formatted similar to pseudospectrum result for the easy comparison. 
Sukumar Daniel
math.SP math.NA