import theory Nat here, which avoids duplicate definition of datatype_realizers (and thus allows to maintain fully authentic fact table);
import theory Nat here, which avoids duplicate definition of datatype_realizers (and thus allows to maintain fully authentic fact table);

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle