A bstract We propose a new formalism to analyse the extremum structure of scale-invariant effective potentials. The problem is stated in compact matrix form, used derive general expressions for stationary point equation and mass multi-field RG-improved potential. Our method improves on (but not limited to) Gildener-Weinberg approximation identifies set conditions that signal presence radiative ...

This paper presents 2109 times of minima for 965 objects acquired by 59 members and cooperating observers the Variable Star Exoplanet Section Czech Astronomical Society (B.R.N.O. Observing project).These observations were submitted to website between November 2016 March 2018.