05C25,43A85 2 13C99 2 16D80 2 16N60,16S36,16W60 2 2-points homogeneous action,Gelfand pairs 2 20E08 2 20F10 2 20F65 2 43A90 2 Rickart modules 2 Rooted \(q\)-ary tree 2 UDC 693.546 2 abelian modules 2 analytic solution 2 cylindrical geometry 2 dissipation 2 drive 2 force 2 fractal group,labelling 2 moment 2 neutral curves 2 principally projective modules 2 quasi \(\sigma\)-rigid rings 2 reduced modules 2 rigid modules 2 rigid or mixed boundary conditions 2 rigid vertex stabilizer 2 rigidity 2 roll forming unit 2 semicommutative modules 2