▁an ▁Inv ited ▁Spe aker ▁of ▁the ▁IC M ▁in ▁ 1 9 9 8 ▁in ▁Berlin . ▁ ▁He ▁is ▁not ▁to ▁be ▁confused ▁with ▁the ▁University ▁of ▁Str as bourg ' s ▁Pierre ▁Col let , ▁ ▁who ▁special izes ▁in ▁artificial ▁evolution ▁and ▁complex ▁systems . ▁ ▁https :// c st b . ic ube . un istra . fr / index . php / Pierre _ Col let ▁ ▁Selected ▁publications ▁ ▁Articles ▁with ▁J .- P . ▁E ck mann : ▁On ▁the ▁abund ance ▁of ▁a period ic ▁behaviour ▁for ▁maps ▁on ▁the ▁unit ▁interval . ▁Bull . ▁Amer . ▁Math . ▁Soc . ▁ 3 ▁( 1 9 8 0 ) ▁Part ▁ 1 : 6 9 9 - 7 0 0 . ▁ ▁with ▁Ser vet ▁Martínez ▁and ▁Bernard ▁Sch mitt : ▁On ▁the ▁enh ancement ▁of ▁diffusion ▁by ▁cha os , ▁escape ▁rates ▁and ▁st ochastic ▁inst ability . ▁Trans . ▁Amer . ▁Math . ▁Soc . ▁ 3 5 1 ▁( 1 9 9 9 ) ▁ 2 8 7 5 – 2 8 9 7 . ▁ ▁with ▁J .- P . ▁E ck mann : ▁L ia p un ov ▁multip liers ▁and ▁decay ▁of ▁correl ations ▁in ▁dynam ical ▁systems , ▁Journal ▁Stat . ▁Phys ., ▁vol . ▁ 1 1 5 , ▁ 2 0 0 4 , ▁pp .   2 1 7 – 2 5 4 ▁ ▁Some ▁aspects ▁of ▁the ▁central ▁limit ▁theorem ▁and ▁related ▁topics