The homological multiplicative Orlov conjecture

Let XX and XX' be derived equivalent hyper-Kähler varieties, and let hhom(X)h_{\mathrm{hom}}(X) denote the homological motive of XX, equipped with its cup-product. The homological multiplicative Orlov conjecture. There is an isomorphism

(hhom(X),)(hhom(X),).(h_{\mathrm{hom}}(X),\cup)\simeq(h_{\mathrm{hom}}(X'),\cup).

This is the homological specialization of the multiplicative Orlov conjecture and is stated in the source to be wide open in higher dimension.

Sources & referencesView supporting material

Primary source

Davesh Maulik, Junliang Shen and Qizheng Yin, “On the Orlov conjecture for hyper-Kähler varieties via hyperholomorphic bundles”, arXiv:2601.20289 (2026).

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