[最も好ましい] ƒGƒ”ƒ@ƒ“ƒQƒŠƒIƒ“ •ÇŽ† Žg“k 136099
From the assumption (gNg−1 ⊆Nfor all g∈G) the element g−1nghas to be an element of N, let it be ~n Then n=g~ng −1 and therefore nis an element of gNg−1 for all gin Gas desired b) Let G=GL 2(Q), let Nbe the subgroup of upper triangular matrices with integer entries and 1's on the diagonal, and let gbe the diagonal matrix with T sits second to the right of the Q Q faces the centre Only two people sit between T and R R is the daughter of P No female is an immediate neighbour of R W is not an immediate neighbour of Q W is the wife of U U sits third to the right of W S is neither an immediate neighbour of W nor T R's brother sits to her immediate rightG G Ohm's law J =σcE (microscopic form); C Wiktionary ƒGƒ"ƒ@ƒ"ƒQƒŠƒIƒ" •ÇŽ† Žg"k
