Equivalence relations induced by extensional formulae: classification by means of a new fixed point property
Existential interpretation. II.
Extended primitive recursive functions
Extending regular expressions with homomorphic replacement
We define H- and EH-expressions as extensions of regular expressions by adding homomorphic and iterated homomorphic replacement as new operations, resp. The definition is analogous to the extension given by Gruska in order to characterize context-free languages. We compare the families of languages obtained by these extensions with the families of regular, linear context-free, context-free, and EDT0L languages. Moreover, relations to language families based on patterns, multi-patterns,...
Extension pathology in regressive isols
Extensions of -subsets to -subsets - existence versus constructability
Extensions to Regressive Isols.
e-степени гипериммунных ретрассируемых множеств.