We consider one-loop five-point QCD amplitudes in next-to-multi-Regge kinematics, and evaluate the impact factor for emission of two gluons. This is last ingredient which necessary to gluon-jet at NNLO accuracy $\as$. It also first instance loop-level are evaluated requires apply a different reggeisation ansatz each colour-ordered amplitude.

This paper investigates the issue of determining dimensions row and column factor spaces in matrix-valued data. Exploiting eigen-gap spectrum sample second moment matrices data, we propose a family randomised tests to check whether one-way or two-way structure exists not. Our do not require any arbitrary thresholding on eigenvalues, can be applied with (virtually) no restrictions relative rate ...