▁those ▁such ▁as ▁Al var ▁A al to . ▁His ▁most ▁notable ▁cre ations ▁feature ▁prom in ently ▁in ▁L jub lj ana , ▁among ▁them ▁Republic ▁Square , ▁C ank ar ▁Hall , ▁Maxim ark et ▁department ▁store , ▁and ▁the ▁Museum ▁of ▁Modern ▁Art . ▁ ▁Contempor ary ▁period ▁ ▁The ▁international ▁style , ▁which ▁had ▁arrived ▁in ▁Y ug oslav ia ▁already ▁in ▁the ▁ 1 9 8 0 s , ▁took ▁over ▁the ▁scene ▁after ▁the ▁independence . ▁ ▁See ▁also ▁ ▁References ▁ ▁External ▁links ▁ ▁Category : C ult ural ▁history ▁of ▁Sloven ia <0x0A> </s> ▁In ▁mathematics , ▁the ▁W itten ▁z eta ▁function , ▁is ▁a ▁function ▁associated ▁to ▁a ▁root ▁system ▁that ▁enc odes ▁the ▁degrees ▁of ▁the ▁ir reducible ▁representations ▁of ▁the ▁corresponding ▁Lie ▁group . ▁These ▁z eta ▁functions ▁were ▁introduced ▁by ▁Don ▁Zag ier ▁who ▁named ▁them ▁after ▁Edward ▁W itten ' s ▁study ▁of ▁their ▁special ▁values ▁( am ong ▁other ▁things ) ▁in . ▁Note ▁that ▁W itten ▁z eta ▁functions ▁do ▁not ▁appear ▁as ▁explicit ▁objects ▁in ▁their ▁own ▁right ▁in . ▁ ▁Definition ▁If ▁ ▁is ▁a ▁compact ▁sem is im ple ▁Lie ▁group , ▁the ▁associated ▁W itten ▁z eta ▁function ▁is ▁( the ▁mer omorphic ▁continu ation ▁of ) ▁the ▁series ▁▁▁ ▁where ▁the ▁sum ▁is ▁over ▁equivalence ▁classes ▁of ▁ir reducible ▁representations ▁of ▁. ▁ ▁In ▁the ▁case ▁where ▁ ▁is ▁connected ▁and ▁simply ▁connected , ▁the ▁correspond ence ▁between ▁representations ▁of ▁ ▁and