Integral algebraic values in the sets of multiple zeta-star values

From papers

Let coverlineQcoverline{\mathbb{Q}} denote the set of algebraic numbers in cmathbbCcmathbb{C}, let ceta(Dq)ceta(\mathcal{D}_q) be the set associated with parameter qq, and let cmathbbZcmathbb{Z} denote the integers.

Integral algebraicity conjecture. For every integer q2q\geq 2,

η(Dq)(QZ)=.\eta(\mathcal{D}_q)\cap(\overline{\mathbb{Q}}\setminus\mathbb{Z})=\varnothing.

This asserts that no nonintegral algebraic number belongs to any ceta(Dq)ceta(\mathcal{D}_q) with q2q\geq 2. It is stated as a further conjectural expectation, and the supplied text gives no resolution.

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Sources & referencesView supporting material

Primary source

Jiangtao Li and Siyu Yang, “Arithmetic sums and products of infinite multiple zeta-star values”, arXiv:2603.26399 (2026).

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