. ▁He ▁was ▁the ▁Department ▁Head ▁of ▁Mathemat ics ▁at ▁U BC ▁from ▁ 2 0 0 2 ▁to ▁ 2 0 0 7 ▁ ▁and ▁the ▁Deput y ▁Director ▁of ▁P I MS ▁from ▁ 2 0 1 6 ▁to ▁ 2 0 1 8 . ▁ ▁Education ▁and ▁academic ▁career ▁Marcus ▁earned ▁his ▁Ph . D . ▁in ▁ 1 9 7 5 ▁from ▁the ▁University ▁of ▁California , ▁Ber keley ▁( UC ▁Ber keley ); ▁his ▁super visor ▁was ▁R uf us ▁Bow en . ▁He ▁then ▁worked ▁as ▁an ▁IBM ▁Watson ▁Post do ctor al ▁Fellow , ▁an ▁associate ▁professor ▁at ▁UN C ▁Chap el ▁Hill ▁and ▁a ▁research er ▁at ▁IBM ▁Research ▁– ▁Al m aden . ▁He ▁addition ally ▁held ▁visit ing ▁associate ▁professor ▁positions ▁at ▁U C ▁Ber keley , ▁University ▁of ▁California , ▁Santa ▁Cruz , ▁and ▁Stan ford ▁University . ▁From ▁ 2 0 1 6 ▁to ▁ 2 0 1 8 , ▁he ▁was ▁the ▁Deput y ▁Director ▁of ▁the ▁Pacific ▁Institute ▁for ▁the ▁Mathemat ical ▁Sciences , ▁where , ▁as ▁of ▁ 2 0 1 9 , ▁he ▁is ▁the ▁U BC ▁Site ▁Director . ▁He ▁is ▁one ▁the ▁represent atives ▁of ▁the ▁Pacific ▁R im ▁Mathemat ical ▁Association . ▁ ▁His ▁main ▁areas ▁of ▁research ▁are ▁er god ic ▁theory , ▁symbol ic ▁dynamics ▁and ▁information ▁theory . ▁He ▁has ▁published ▁contributions ▁in ▁the ▁theory ▁of ▁hor oc ycle ▁flows ▁and ▁entropy . ▁Marcus ▁has ▁written ▁over ▁sevent y ▁research ▁papers