▁of ▁generating ▁animated ▁G IF s ▁of ▁paramet ric ▁ 2 D ▁or ▁ 3 D ▁graphs ▁or ▁allowing ▁prime ▁tests ▁with ▁very ▁large ▁numbers . ▁ ▁Author ▁ ▁X iao ▁Gang ▁was ▁a ▁professor ▁at ▁University ▁of ▁Nice ▁Soph ia ▁Ant ip olis . ▁He ▁was ▁interested ▁in ▁solar ▁energy ▁and ▁algebraic ▁geometry . ▁He ▁was ▁also ▁the ▁active ▁site ▁manager ▁of ▁the ▁W I MS ▁of ▁the ▁university ▁he ▁worked ▁for . ▁X iao ▁Gang ▁died ▁on ▁June ▁ 2 7 , ▁ 2 0 1 4 . ▁ ▁X iao ▁Gang ▁learned ▁himself ▁during ▁the ▁Up ▁to ▁the ▁Mountains ▁and ▁Down ▁to ▁the ▁Coun tr ys ide ▁Mov ement ▁and ▁then ▁obtained ▁his ▁master ' s ▁degree ▁from ▁University ▁of ▁Science ▁and ▁Technology ▁of ▁China . ▁X iao ▁obtained ▁his ▁Ph . D . ▁degree ▁from ▁University ▁of ▁Paris - S ud ▁in ▁ 1 9 8 4 . ▁After ▁that , ▁he ▁returned ▁China ▁and ▁became ▁a ▁lect urer ▁at ▁East ▁China ▁Normal ▁University . ▁He ▁was ▁promoted ▁to ▁professor ▁in ▁ 1 9 8 6 , ▁and ▁was ▁awarded ▁the ▁Sh i ing - Sh en ▁Ch ern ▁Prize ▁in ▁Mathemat ics ▁in ▁ 1 9 9 1 . ▁In ▁ 1 9 9 2 , ▁X iao ▁became ▁a ▁professor ▁at ▁University ▁of ▁Nice ▁Soph ia ▁Ant ip olis . ▁ ▁External ▁links ▁▁ ▁English ▁W I MS ▁at ▁w ims . un ice . fr ▁ ▁- ▁The ▁W I MS ▁of ▁the ▁University ▁of ▁Nice