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math.AG2026
The border Waring rank of is
Jong In Han
In this paper, we show that the border Waring rank of over fields of characteristic zero is exactly . As a consequence, the classical polarization ident…
math.GT2026
Purely cosmetic surgeries and Casson--Walker--Lescop invariants
Kazuhiro Ichihara, In Dae Jong, Yasuyoshi Tsutsumi
Using the rational surgery formula for the Casson--Walker--Lescop invariant of links in the -sphere, we show that any null-homologous knot in a rational homology sphere admits a…