Nahum Krupnik
abstract:
A concise survey on the construction of the spectra, symbols and index-formulas 
for singular integral operators with piecewise continuous coefficients in the 
spaces $L_p^n(\Gamma,\rho)$ is given. Influence of some results by 
B. V. Khvedelidze on this research is shown. Several interesting associated 
results, obtained during this research, and their applications are discussed in 
appendix. An open question is stated. Some historical information, related to 
this paper is presented in the introduction.
Mathematics Subject Classification: Primary 45E10, 45E05, 47B48; Secondary 47B35
Key words and phrases: Banach algebras, Fredholm theory, spectrum, symbol, index