Equation Icon  integral { integral a+3 ( ) ( ) } Pf d3x F = lim d3x F + 4p sum s----- F-- + 4p ln -s (r3F ) + 1 <--> 2 .(119) s1s2 s-->0 S(s) a + 3 ra1 1 s1 1 1 a+3<0