Local saturation of the non-stationary ideal over Pklambda. - Toshimichi Usuba (Ann. Pure Appl. Log., 2007)

Notes on the partition property of Pκλ. - Yoshihiro Abe; Toshimichi Usuba (Arch. Math. Log., 2012)

Two-cardinal versions of weak compactness: Partitions of pairs. - Pierre Matet; Toshimichi Usuba (Ann. Pure Appl. Log., 2012)

Splitting stationary sets in (λ). - Toshimichi Usuba (J. Symb. Log., 2012)

Hierarchies of ineffabilities. - Toshimichi Usuba (Math. Log. Q., 2013)

Bounded dagger principles. - Toshimichi Usuba (Math. Log. Q., 2014)

Superstrong and other large cardinals are never Laver indestructible. - Joan Bagaria; Joel David Hamkins; Konstantinos Tsaprounis; Toshimichi Usuba (Arch. Math. Log., 2016)

Subtlety and partition relations. - Toshimichi Usuba (Math. Log. Q., 2016)

The downward directed grounds hypothesis and very large cardinals. - Toshimichi Usuba (J. Math. Log., 2017)

New combinatorial principle on singular cardinals and normal ideals. - Toshimichi Usuba (Math. Log. Q., 2018)

Extendible cardinals and the mantle. - Toshimichi Usuba (Arch. Math. Log., 2019)

On the existence of skinny stationary subsets. - Yo Matsubara; Hiroshi Sakai; Toshimichi Usuba (Ann. Pure Appl. Log., 2019)

Strongly compact cardinals and the continuum function. - Arthur W. Apter; Stamatis Dimopoulos; Toshimichi Usuba (Ann. Pure Appl. Log., 2021)

On Recurrence Axioms. - Sakaé Fuchino; Toshimichi Usuba (Ann. Pure Appl. Log., 2025)