Kellogg's iterations in the eigenvalue problem are discussed with respect to the boundary spectrum of a linear normal operator.
@article{104417, author = {Tom\'a\v s Kojeck\'y}, title = {Some functions of eigenvalues of normal operator}, journal = {Applications of Mathematics}, volume = {35}, year = {1990}, pages = {356-360}, zbl = {0726.65059}, mrnumber = {1072606}, language = {en}, url = {http://dml.mathdoc.fr/item/104417} }
Kojecký, Tomáš. Some functions of eigenvalues of normal operator. Applications of Mathematics, Tome 35 (1990) pp. 356-360. http://gdmltest.u-ga.fr/item/104417/
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