A bstract We propose a strategy to study the analytic structure of Feynman parameter integrals where singularities integrand consist rational irreducible components. At core this is identification selected stratum discontinuities induced from integral, together with geometric method for computing their on principal sheet. For that yield multiple polylogarithms we expect data collected in be suf...

‎The Lorentz transformation of order $(m=1,n)$‎, ‎$ninNb$‎, ‎is the well-known ‎Lorentz transformation of special relativity theory‎. ‎It is a transformation of time-space coordinates of the ‎pseudo-Euclidean space $Rb^{m=1,n}$ of one time dimension and ‎$n$ space dimensions ($n=3$ in physical applications)‎. ‎A Lorentz transformation without rotations is called a {it boost}‎. ‎Commonly‎, ‎the ...