3 citations · 3 across the 1 of their papers we have counts for
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Extended Bloch group and the Chern-Simons class (Incomplete working version)
Walter D Neumann
We define an extended Bloch group and show it is isomorphic to . Using the Rogers dilogarithm function this leads to an exact simplicial formula for the universa…
Kleinian Groups Generated by Rotations
Walter D. Neumann
We discuss which Kleinian groups are commensurable with Kleinian groups generated by rotations, with particular emphasis on Kleinian groups that arise from Dehn surgery on a knot.
Rationality problems for Chern-Simons invariants
Walter D. Neumann, Jun Yang
This paper makes certain observations regarding some conjectures of Milnor and Ramakrishnan in hyperbolic geometry and algebraic K-theory. As a consequence of our observations, we…
Bloch invariants of hyperbolic 3-manifolds
Walter D. Neumann, Jun Yang
We define an invariant β(M) of a finite volume hyperbolic 3-manifold M in the Bloch group B(C) and show it is determined by the simplex parameters of any degree one ideal triangula…
Hilbert's 3rd Problem and invariants of 3-manifolds
Walter D. Neumann
This paper is an expansion of my lecture for David Epstein's birthday, which traced a logical progression from ideas of Euclid on subdividing polygons to some recent research on in…