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math.GT1997
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…
math.GT1997
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…