Rule notnot.inv
Parameters | |
Buggy | no |
Rewrite rule | yes |
Siblings | logic.propositional.doublenegation |
Rewrite rule
p ⇒ ¬(¬p)Formal Mathematical Properties
<FMP><OMOBJ xmlns="http://www.openmath.org/OpenMath" version="2.0" cdbase="http://www.openmath.org/cd"><OMBIND><OMS cd="quant1" name="forall"/><OMBVAR><OMV name="$0"/></OMBVAR><OMA><OMS cd="relation1" name="eq"/><OMV name="$0"/><OMA><OMS cd="logic1" name="not"/><OMA><OMS cd="logic1" name="not"/><OMV name="$0"/></OMA></OMA></OMA></OMBIND></OMOBJ></FMP>