> 47-XX Operator theory > 47SXX Other (nonclassical) types of operator theory

47S10 Operator theory over fields other than $bfR$, $bfC$ or the quaternions; non-Archimedean operator theory	47S20 Nonstandard operator theory	47S30 Constructive operator theory
47S40 Fuzzy operator theory	47S50 Operator theory in probabilistic metric linear spaces	47S99 None of the above, but in this section

47SXX Other (nonclassical) types of operator theory