most citedPresentations of the first homotopy groups of the unitary groups

23 citations · 28 across the 2 of their papers we have counts for

collaborators

2 papers

math.GT2005★ 5 cited

Wiedersehen metrics and exotic involutions of Euclidean spheres

Uwe Abresch, Carlos Duran, Thomas Puettmann +1

We provide explicit, simple, geometric formulas for free involutions rho of Euclidean spheres that are not conjugate to the antipodal involution. Therefore the quotient S^n/rho is…

math.AT2003★ 23 cited

Presentations of the first homotopy groups of the unitary groups

Thomas Puettmann, A. Rigas

We describe explicit presentations of all stable and the first nonstable homotopy groups of the unitary groups. In particular, for each n >= 2 we supply n homotopic maps that each…