avoid hardwired Trueprop; local proof: static refererence to Pure.thy;
avoid hardwired Trueprop;
local proof: static refererence to Pure.thy;

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