ƚ@  pT e .   @& & MathTypePSymbol 4ww 0wf -2 ~(ySymbol ww 0wf -2 ~)yTimes New Romanww 0wf -2 282 38Symbol Ƞww 0wf -2 M=82 -8Times New Romanww 0wf -2 y82 ^y8 & "System f !-