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Han Yoshida
Proc. Japan Acad. Ser. A Math. Sci. 98 (9), 73-77, (November 2022) DOI: 10.3792/pjaa.98.014 Open Access
KEYWORDS: hyperbolic link, commensurator, hidden symmetry, 57M25
Yilun Shang
Proc. Japan Acad. Ser. A Math. Sci. 98 (9), 78-83, (November 2022) DOI: 10.3792/pjaa.98.015 Open Access
KEYWORDS: Tree-depth, tree-width, random graph, heterogeneous graph, 05C80, 60C05, 62E10, 90B15
Nguyễn Quốc Thắng
Proc. Japan Acad. Ser. A Math. Sci. 98 (9), 84-89, (November 2022) DOI: 10.3792/pjaa.98.016 Open Access
KEYWORDS: Brauer groups, Brauer equivalence, R-equivalence, weak approximation, Galois cohomology, Reductive group, 11E72, 20G10, 20G30, 20G35
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