Homotopy Nilpotency in Localized Lie Groups Daisuke Kishimoto, Kyoto University It is known that p-localized Lie groups are homotopy commutative when the prime p is large enough. However it is not known how far from being homotopy commutative p-localized Lie groups are when p is not so large. We consider this problem by using homotopy nilpotency and as a consequence we see that homotopy nilpotency is not a monotonic decreasing function in p.