Takehiko Gappo

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20212026

most citedDeterminacy in the Chang model

2 citations · 2 across the 8 of their papers we have counts for

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math.LO2026

Cardinal invariants of idealized Miller null sets

Aleksander Cieślak, Takehiko Gappo, Arturo Martínez-Celis +1

This paper provides an extensive study of the $I$ -Miller null ideals $M_{I}$ , $σ$ -ideals on the Baire space parametrized by ideals $I$ on countable sets…

math.LO2026

Long games just beyond fixed countable length

Takehiko Gappo, Sandra Müller

We introduce a new type of game on natural numbers of variable countable length, which can be regarded as a diagonalization of all games of fixed countable length on natural number…