Extended Uniqueness Conjecture for coherent weakly approximable triangulated categories

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Let \ct\ct be a coherent, weakly approximable triangulated category. Let \ccSp\cc_{\mathbf{Sp}} be the collection

{Ho(Sp),Ho(Sp)b,Ho(Sp)−,Ho(Sp)+,Ho(Sp)\SB,Ho(Sp)c−,Ho(Sp)cb,Ho(Sp)c}\left\{\mathrm{Ho}(\mathbf{Sp}),\mathrm{Ho}(\mathbf{Sp})^b,\mathrm{Ho}(\mathbf{Sp})^-,\mathrm{Ho}(\mathbf{Sp})^+,\mathrm{Ho}(\mathbf{Sp})\SB,\mathrm{Ho}(\mathbf{Sp})^-_c,\mathrm{Ho}(\mathbf{Sp})^b_c,\mathrm{Ho}(\mathbf{Sp})^c\right\}

and let \cc\ct\cc_\ct be the corresponding collection

{\ct,\ctb,\ct−,\ct+,\tsb,\ctc−,\ctcb,\ctc}.\left\{\ct,\ct^b,\ct^-,\ct^+,\tsb,\ct^-_c,\ct^b_c,\ct^c\right\}.

Suppose \ca1⊂\cb1\ca_1\subset\cb_1 in \ccSp\cc_{\mathbf{Sp}} and \ca2⊂\cb2\ca_2\subset\cb_2 in \cc\ct\cc_\ct are matching subcategories.

Extended Uniqueness Conjecture. If there is an exact equivalence

\ca1≅\ca2,\ca_1\cong\ca_2,

then there is an exact equivalence

\cb1≅\cb2.\cb_1\cong\cb_2.

This generalizes the Margolis Uniqueness Conjecture to matching pairs of intrinsic subcategories. Its validity is not established in general; the paper presents it as a broader open conjecture motivated by invariance results and the special cases available when enhancements exist.

References

Primary source

Alberto Canonaco, Amnon Neeman and Paolo Stellari, “Metrics on triangulated categories and their enhancements”, arXiv:2607.12865 (2026).

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