Rule logic.propositional.notnot

Parameters
Buggy	no
Rewrite rule	yes
Siblings	logic.propositional.doublenegation

Rewrite rule

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"/><OMA><OMS cd="logic1" name="not"/><OMA><OMS cd="logic1" name="not"/><OMV name="$0"/></OMA></OMA><OMV name="$0"/></OMA></OMBIND></OMOBJ></FMP>