Noncommutative Kato distinguished-triangle conjecture

Let AA^{\bullet} be a DG algebra over Z\mathbb{Z}. Let CPD(AC)ιCP^{\mathcal{D}}_{\bullet}(A^{\bullet}\otimes\mathbb{C})^\iota be its Deligne-type periodic cyclic complex with involution, and define

K(A)R=(K(Cpspf(A))R).K'_{\bullet}(A^{\bullet})_{\mathbb{R}}=\left(K_{\bullet}(C^{\mathrm{pspf}}(A^{\bullet}))\otimes\mathbb{R}\right)^*.

The regulator and dual regulator are maps from algebraic KK-theory through this complex.

Noncommutative distinguished-triangle conjecture. There is a natural distinguished triangle

K(A)RrCPD(AC)ιrK(A)R[1]K^{\bullet}(A^{\bullet})\otimes\mathbb{R}\xrightarrow{r}CP^{\mathcal{D}}_{\bullet}(A^{\bullet}\otimes\mathbb{C})^\iota\xrightarrow{r^*}K'_{\bullet}(A^{\bullet})_{\mathbb{R}}[1]\longrightarrow

where rr and rr^* are the regulator and dual regulator maps.

This is the proposed noncommutative analogue of the distinguished triangle for varieties, using periodic cyclic homology and the dual of algebraic KK-theory. The source gives no resolution of the assertion.

Sources & referencesView supporting material

Primary source

D. Kaledin, “Beilinson conjecture for finite-dimensional associative algebras”, arXiv:1312.4069 (2013).

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