The homological multiplicative Orlov conjecture

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Let XX and X′X' 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.

References

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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