Input:
definition(polylog(a,x))
Write:
`definition(polylog(a,x))`
Output: $$ definition:\\ \ polylog(a,x) == \frac {\int _{0}^{oo} (\frac {({t}^{-1+a})}{exp(t)-x})\ dt}{\Gamma (a)}\ x $$ Result:$$\frac {\int _{0}^{oo} (\frac {({t}^{-1+a})}{exp(t)-x})\ dt}{\Gamma (a)}\ x$$