The Cotangent of the Half-Line
Sunday, January 18, 2015
 
In this note I investigate the nature and the structure of the cotangent of the half-line ∆ = [0,∞[. Set theoretically : T*(∆) ≃ (0,0) ∪ ]0,∞[ ×R. But the diffeology is finer than the subset diffeology. Ref. http://math.huji.ac.il/~piz/documents/DBlog-Rmk-CTSOTHL.pdf