▁three - ho led ▁sphere ", ▁Ge ometry ▁& ▁Top ology ▁ 1 4 ▁( 2 0 1 0 ), ▁ 1 3 5 5 - 1 3 8 2 ▁ ▁W ili am ▁Gold man ▁and ▁Eug ene ▁X ia , ▁" Er god icity ▁of ▁mapping ▁class ▁group ▁action ▁on ▁SU ( 2 )- ▁character ▁vari eties ", ▁in ▁“ Ge ometry , ▁rig id ity , ▁and ▁group ▁actions ”, ▁Chicago ▁L ect ures ▁in ▁Math ., ▁University ▁of ▁Chicago ▁Press ▁( 2 0 1 1 ) ▁ ▁Books ▁William ▁Gold man , ▁ ▁Complex ▁hyper bol ic ▁geometry . ▁ ▁Oxford ▁Mathemat ical ▁Mon ograph s . ▁Oxford ▁Science ▁Publications . ▁ ▁The ▁Clar end on ▁Press , ▁Oxford ▁University ▁Press , ▁New ▁York , ▁ 1 9 9 9 . ▁xx + 3 1 6 ▁pp . ▁ ▁References ▁ ▁External ▁links ▁Fac ulty ▁page ▁at ▁the ▁University ▁of ▁Maryland , ▁College ▁Park ▁ ▁Category : 1 9 5 5 ▁birth s ▁Category : L iving ▁people ▁Category : 2 0 th - century ▁mathemat icians ▁Category : 2 1 st - century ▁mathemat icians ▁Category : Univers ity ▁of ▁California , ▁Ber keley ▁al umn i ▁Category : Univers ity ▁of ▁Maryland , ▁College ▁Park ▁fac ulty ▁Category : F ell ows ▁of ▁the ▁American ▁Mathemat ical ▁Society ▁Category : Top olog ists ▁Category : D iffer ential ▁geom eters ▁Category : Pe ople ▁from ▁Kansas ▁City , ▁Missouri ▁Category : Math emat icians ▁from ▁Missouri ▁Category