- spectraloid operator
- мат.спектралоидный оператор
English-Russian scientific dictionary. 2008.
English-Russian scientific dictionary. 2008.
Convexoid operator — In mathematics, especially operator theory, a convexoid operator is a bounded linear operator T on a complex Hilbert space H such that the closure of the numerical range coincides with the convex hull of its spectrum. An example of such an… … Wikipedia