Rule relationalgebra.idempotencyand

Parameters
Buggy no
Rewrite rule yes
Siblings

Rewrite rule

r ∩ r ⇒ r

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="relalg" name="conj"/><OMV name="$0"/><OMV name="$0"/></OMA><OMV name="$0"/></OMA></OMBIND></OMOBJ></FMP>