- 941 209 20M10 52 20D10 51 05C25 46 semigroup 37 17A32 36 20E08 35 20M20 34 16D90 32 16G20 31 15A21 27 16G60 27 derivation 27 20F65 26 Lie algebra 26 silicon 26 20M18 25 621.3.022 25 finite group 25 20E22 24 температура 24 17A30 23 08B20 22 16D10 22 20F50 22 20M50 22 Leibniz algebra 22 magnetic field 22 16G10 21