This Research Note addresses several pivotal problems in spectral theory and nonlinear functional analysis in connection with the analysis of the structure of the set of zeroes of a general class of nonlinear operators.It features the construction of an optimal algebraic/analytic invariant for calculating the Leray-Schauder degree, new methods for Additional ISBNs1584882492, 113844197X, 0429127839, 9781584882497, 9781138441972, 9780429127830Spectral Theory and Nonlinear Functional Analysis 1st Edition is written by Julian Lopez-Gomez and published by Chapman & Hall. ISBNs for Spectral Theory and Nonlinear Functional Analysis are 9781420035506, 1420035509 and the print ISBNs are 9781138441972, 113844197X. Additional ISBNs include 1584882492, 113844197X, 0429127839, 9781584882497, 9781138441972, 9780429127830.

