Expression 2: max left parenthesis, StartAbsoluteValue, StartFraction, left bracket, "x" , "y" , right bracket Over 3 , EndFraction minus 1 half , EndAbsoluteValue , right parenthesis less than or equal to 1 half left brace, "b" left parenthesis, 3 Superscript, "N" , Baseline "x" , right parenthesis "b" left parenthesis, 3 Superscript, "N" , Baseline "y" , right parenthesis equals 1 , right bracemaxx,y3−12≤12b3Nxb3Ny=1
2
Expression 3: "b" left parenthesis, "x" , right parenthesis equals floor left parenthesis, mod left parenthesis, StartFraction, "x" Over 3 Superscript, left bracket, 0... "N" , right bracket , Baseline , EndFraction , 3 , right parenthesis , right parenthesisbx=floormodx30...N,3