1 paper
Claud W. G. Dias, Alexei Krasilnikov
Let G be a group generated by a set X. It is well known and easy to check that \[ [g_1, g_2, \dots ,g_n] = 1 \mbox{ for all } g_i \in G \qquad \iff \qquad [x_1, x_2, \dots , x_…