Volumes, middle-dimensional systoles, and Whitehead products
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Let X be a closed manifold of dimension 2m >= 6 with torsion-free middle-dimensional homology. We construct metrics on X of arbitrarily small volume, such that every middle-dimensional submanifold of less than unit volume necessarily bounds. Thus, Loewner's theorem has no higher-dimensional analogue.
LaTeX2e, 11 pages. Revised version, to appear in Math. Research Letters
LaTeX2e, 11 pages. Revised version, to appear in Math. Research Letters