▁in ▁Kü sn acht ▁– ▁ 2 0 0 7 ) ▁a ▁Swiss ▁ro wer , ▁competed ▁in ▁the ▁ 1 9 6 4 ▁and ▁ 1 9 6 8 ▁Summer ▁Olympics ▁ ▁Karl ▁Gro b ▁( born ▁ 1 9 4 6 ▁in ▁Kü sn acht ) ▁a ▁retired ▁football ▁goal keeper ▁for ▁FC ▁Zürich , ▁ 5 1 3 ▁club ▁caps ▁ ▁Ari ▁Sul ander ▁( born ▁ 1 9 6 9 ) ▁a ▁retired ▁Finn ish ▁professional ▁ice ▁hockey ▁go alt ender ▁ ▁Hann u ▁T ih inen ▁( born ▁ 1 9 7 6 ) ▁a ▁retired ▁Finn ish ▁football ▁def ender ▁ ▁K imi ▁R ä ikk ön en ▁( born ▁ 1 9 7 9 ) ▁a ▁Finn ish ▁racing ▁driver ▁in ▁Formula ▁One ▁ ▁References ▁ ▁External ▁links ▁ ▁Official ▁page ▁( G erman ) ▁▁▁ ▁Category : C ities ▁in ▁Switzerland ▁Category : M unicip al ities ▁of ▁the ▁canton ▁of ▁Zürich ▁Category : Pop ulated ▁places ▁on ▁Lake ▁Zur ich <0x0A> </s> ▁In ▁category ▁theory , ▁a ▁branch ▁of ▁mathematics , ▁a ▁rig id ▁category ▁is ▁a ▁mon oid al ▁category ▁where ▁every ▁object ▁is ▁rig id , ▁that ▁is , ▁has ▁a ▁dual ▁X * ▁( the ▁internal ▁Hom ▁[ X , ▁ 1 ]) ▁and ▁a ▁morph ism ▁ 1 ▁→ ▁X ▁ ⊗ ▁X * ▁satisfying ▁natural ▁conditions . ▁The ▁category ▁is ▁called ▁right ▁rig id ▁or ▁left ▁rig id ▁according ▁to ▁whether ▁it ▁has ▁right ▁du als ▁or ▁left ▁du