The rational cohomology characterization of complex tori
Let be a compact Kähler manifold of complex dimension , and write for its rational cohomology algebra. The rational cohomology conjecture for complex tori. Then is a complex torus if and only if
Equivalently,
The preceding theorem establishes the analogous characterization using integral cohomology; the proposed strengthening replaces integral coefficients by rational, or equivalently complex, coefficients, and no resolution is supplied in the source.
References
Primary source
Fabrizio Catanese, “Topological methods in moduli theory”, arXiv:1411.3235 (2015).
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