2001/02/16 by Dorothee Schueth
Mathematics · #math.DG #math.SP #msc:58J53
published as J. Reine Angew. Math. 534 (2001), 41 - 94 · 59 pages, AMS-TeX. Habilitation thesis (2000), to appear in: J. Reine Angew. Math
arxiv created 2001/02/16 · arxiv updated 2009/11/30
We construct several new classes of isospectral manifolds with different local geometries. After reviewing a theorem by Carolyn Gordon on isospectral torus bundles and presenting certain useful specialized versions (Chapter 1) we apply these tools to construct the first examples of isospectral four-dimensional manifolds which are not locally isometric (Chapter 2). Moreover, we construct the first examples of isospectral left invariant metrics on compact Lie groups (Chapter 3). Thereby we also obtain the first continuous isospectral families of globally homogeneous manifolds and the first examples of isospectral manifolds which are simply connected and irreducible. Finally, we construct the first pairs of isospectral manifolds which are conformally equivalent and not locally isometric (Chapter 4).