TY - RPRT A1 - Möller, Bernhard T1 - Complete tests do not guarantee domain N2 - We refute, by a counterexample, the conjecture that in a test semiring with complete lattice a domain operation can always be defined. The construction is based on ultrafilters extending the cofinite filter on a set. T3 - Reports / Technische Berichte der Fakultät für Angewandte Informatik der Universität Augsburg - 2005-06 Y1 - 2006 UR - https://opus.bibliothek.uni-augsburg.de/opus4/frontdoor/index/index/docId/247 UR - https://nbn-resolving.org/urn:nbn:de:bvb:384-opus4-1988 PB - Institut für Informatik, Universität Augsburg CY - Augsburg ER -