Diffeomorphism From Tangent Bundle to Product

dimanche 29 septembre 2013

Show that [itex]TS^1[/itex] is diffeomorphic to [itex]TM×TN[/itex].



([itex]TS]^1[/itex] is the tangent bundle of the 1-sphere.)



We can use the theorem stating the following.



If [itex]M[/itex] is a smooth [itex]n[/itex]-manifold with or without boundary, and [itex]M[/itex] can be covered by a single smooth chart, then [itex]TM[/itex] is diffeomorphic to [itex]M×ℝ^n.[/itex]



Clearly, I must be looking for a single smooth chart on [itex]S^1[/itex], but I am very uncertain on how to go about doing this. Any tips on managing the nuances are greatly appreciated.






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