, ▁ 4 , ▁...) ▁is ▁a ▁sub net ▁of ▁the ▁net ▁( 1 , ▁ 2 , ▁ 3 , ▁ 4 , ▁... ). ▁ ▁The ▁key ▁difference ▁is ▁that ▁sub net s ▁can ▁use ▁the ▁same ▁point ▁in ▁the ▁net ▁multiple ▁times ▁and ▁the ▁indexing ▁set ▁of ▁the ▁sub net ▁can ▁have ▁much ▁larger ▁cardinal ity . ▁Using ▁the ▁more ▁general ▁definition ▁where ▁we ▁don ' t ▁require ▁monot onic ity , ▁a ▁sequence ▁is ▁a ▁sub net ▁of ▁a ▁given ▁sequence , ▁if ▁and ▁only ▁if ▁it ▁can ▁be ▁obtained ▁from ▁some ▁sub sequence ▁by ▁repeating ▁its ▁terms ▁and ▁re order ing ▁them . ▁ ▁Notes ▁ ▁References ▁ ▁Category : Top ology <0x0A> </s> ▁Sel am ▁T es f aye ▁() ▁is ▁an ▁Eth iop ian ▁film ▁actress . ▁▁ ▁She ▁had ▁the ▁female ▁lead ▁role ▁in ▁the ▁film ▁Cr umb s , ▁directed ▁by ▁Miguel ▁L l ans ó , ▁and ▁promoted ▁as ▁the ▁first ▁Eth iop ian - made ▁science - f iction ▁film . ▁▁ ▁In ▁September ▁ 2 0 1 8 , ▁Sel am ▁won ▁the ▁Best ▁Act ress ▁award ▁at ▁the ▁ 9 th ▁Add is ▁Music ▁Awards , ▁for ▁the ▁film ▁Y ab ede ch ▁Y ar ada ▁L ij . ▁ ▁References ▁ ▁External ▁links ▁ ▁Category : 1 9 9 3 ▁birth s ▁Category : L iving ▁people ▁Category : 2 1 st - century ▁Eth iop ian ▁actress es <0x0A> </s> ▁Ost rea ▁ed ul is , ▁commonly ▁known