. ▁Rib bon ▁graph ▁representations ▁may ▁be ▁equivalent ▁even ▁if ▁it ▁is ▁not ▁possible ▁to ▁de form ▁one ▁into ▁the ▁other ▁within ▁ 3 d ▁space : ▁this ▁notion ▁of ▁equivalence ▁cons iders ▁only ▁the ▁intr insic ▁topology ▁of ▁the ▁representation , ▁and ▁not ▁how ▁it ▁is ▁embedded . ▁ ▁However , ▁rib bon ▁graphs ▁are ▁also ▁applied ▁in ▁kn ot ▁theory , ▁and ▁in ▁this ▁application ▁we aker ▁not ions ▁of ▁equivalence ▁that ▁take ▁into ▁account ▁the ▁ 3 d ▁embedding ▁may ▁also ▁be ▁used . ▁ ▁References ▁ ▁Category : Top ological ▁graph ▁theory <0x0A> </s> ▁Kr zes zna ▁ ▁() ▁is ▁a ▁village ▁in ▁the ▁administrative ▁district ▁of ▁G mina ▁St ę ży ca , ▁within ▁K art u zy ▁County , ▁P omer an ian ▁Vo iv odes hip , ▁in ▁northern ▁Poland . ▁It ▁lies ▁approximately ▁ ▁east ▁of ▁St ę ży ca , ▁ ▁south - west ▁of ▁K art u zy , ▁and ▁ ▁south - west ▁of ▁the ▁regional ▁capital ▁G da ń sk . ▁ ▁For ▁details ▁of ▁the ▁history ▁of ▁the ▁region , ▁see ▁History ▁of ▁P omer ania . ▁ ▁The ▁village ▁has ▁a ▁population ▁of ▁ 8 6 . ▁ ▁References ▁ ▁Kr zes zna <0x0A> </s> ▁S ous ▁Lieutenant ▁No ël ▁H ug ues ▁Anne ▁Louis ▁de ▁Ro che fort ▁was ▁a ▁World ▁War ▁I ▁flying ▁ace ▁cred ited ▁with ▁seven ▁aer ial ▁vict ories . ▁He ▁was ▁one ▁of ▁the ▁original ▁French ▁a ces . ▁ ▁Ro che fort