Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Joan Sylvia Lyttle Birman (an haife shi a ranar 30 ga Mayu, 1927 a Birnin New York) masanin ilimin lissafi ne na Amurka, wanda ya ƙware a cikin ƙananan ƙarancin ƙira. Ta ba da gudummawa ga nazarin ƙuƙwalwa, 3-manifolds, taswirar ƙungiyoyin aji na farfajiyoyi, ka'idar rukunin geometric, tsarin tuntuɓar da tsarin aiki. Birman a halin yanzu Farfesa ne na Emerita a Kwalejin Barnard, Jami'ar Columbia, inda ta kasance tun 1973.  Tambaya: Wane fannin lissafi ne Joan Birman ya ƙware?
ƙananan ƙarancin ƙira