October 2006
James Tauber : Coordinate Systems
When we defined manifolds back in Poincare Project: Manifolds, we pretty much defined what a coordinate system is:
June 2006
Poincaré conjecture
by YukuanMark
the Poincaré conjecture (pronounced "pwahn cah ray" or IPA: [pwɛ̃kaˈʀe]) [1] is a conjecture about the characterisation of the three-dimensional sphere amongst three-dimensional manifolds.
破解百年數學難題"中國科學家貢獻在30%左右"
by YukuanMark
儘管破解世界數學百年難題“龐加萊猜想”的成績轟動全國，但中山大學教授朱熹平仍然一如既往地保持著他低調的作風，婉拒了各媒體的採訪。
Poincaré Conjecture
by YukuanMark
the Poincaré conjecture states that every simply connected closed three-manifold is homeomorphic to the three-sphere (in a topologist's sense) S^3
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(5 marks)
