#NEWLINE# def __mul__( self , other ) : #NEWLINE# #INDENT# if isinstance ( other , Pauli ) : #NEWLINE# #INDENT# j = self . i #NEWLINE# k = other . i #NEWLINE# return ( ( ( delta ( j , k ) + ( ( I * epsilon ( j , k , 1 ) ) * Pauli ( 1 ) ) ) + ( ( I * epsilon ( j , k , 2 ) ) * Pauli ( 2 ) ) ) + ( ( I * epsilon ( j , k , 3 ) ) * Pauli ( 3 ) ) ) #NEWLINE# #UNINDENT# return super ( Pauli , self ) . __mul__ ( other )