im ization ▁techniques ; ▁Program ming ▁models ; ▁Dynamic ▁analysis ▁J EL : ▁C 6 2 ▁- ▁Ex istence ▁and ▁stability ▁conditions ▁of ▁equilibrium ▁J EL : ▁C 6 3 ▁- ▁Comput ational ▁techniques ; ▁Sim ulation ▁model ing ▁J EL : ▁C 6 7 ▁- ▁Input – output ▁models ▁J EL : ▁C 6 8 ▁- ▁Comput able ▁General ▁Equ ilib rium ▁models ▁ ▁J EL : ▁C 7 ▁- ▁Game ▁theory ▁and ▁B arg aining ▁theory ▁J EL : ▁C 7 0 ▁- ▁General ▁J EL : ▁C 7 1 ▁- ▁Cooper ative ▁games ▁J EL : ▁C 7 2 ▁- ▁Non co oper ative ▁games ▁J EL : ▁C 7 3 ▁- ▁Sto ch astic ▁and ▁Dynamic ▁games ; ▁E volution ary ▁games ; ▁Re pe ated ▁Games ▁J EL : ▁C 7 8 ▁- ▁B arg aining ▁theory ; ▁Match ing ▁theory ▁ ▁Crit ic isms ▁and ▁def ences ▁ ▁A de qu acy ▁of ▁mathematics ▁for ▁qual itative ▁and ▁complicated ▁econom ics ▁Friedrich ▁Hay ek ▁cont ended ▁that ▁the ▁use ▁of ▁formal ▁techniques ▁projects ▁a ▁scientific ▁exact ness ▁that ▁does ▁not ▁appropri ately ▁account ▁for ▁inform ational ▁limitations ▁faced ▁by ▁real ▁economic ▁agents . ▁▁ ▁In ▁an ▁interview ▁in ▁ 1 9 9 9 , ▁the ▁economic ▁historian ▁ ▁Robert ▁Heil br on er ▁stated : ▁ ▁Heil br on er ▁stated ▁that ▁" some / m uch ▁of ▁econom ics ▁is ▁not ▁naturally ▁quant itative ▁and ▁therefore ▁does ▁not ▁l end ▁itself ▁to ▁mathematical ▁ex position ."