Toshimichi Usuba

According to our database, Toshimichi Usuba authored at least 15 papers between 2007 and 2026.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of three.

2026

Monotonicity of the ultrafilter number function.

Toshimichi Usuba

Arch. Math. Log., April, 2026

2025

On Recurrence Axioms.

Sakaé Fuchino, Toshimichi Usuba

Ann. Pure Appl. Log., 2025

2021

Strongly compact cardinals and the continuum function.

Arthur W. Apter, Stamatis Dimopoulos, Toshimichi Usuba

Ann. Pure Appl. Log., 2021

2019

On the existence of skinny stationary subsets.

Yo Matsubara, Hiroshi Sakai, Toshimichi Usuba

Ann. Pure Appl. Log., 2019

Extendible cardinals and the mantle.

Toshimichi Usuba

Arch. Math. Log., 2019

2018

New combinatorial principle on singular cardinals and normal ideals.

Toshimichi Usuba

Math. Log. Q., 2018

2017

The downward directed grounds hypothesis and very large cardinals.

Toshimichi Usuba

J. Math. Log., 2017

2016

Subtlety and partition relations.

Toshimichi Usuba

Math. Log. Q., 2016

Superstrong and other large cardinals are never Laver indestructible.

Joan Bagaria, Joel David Hamkins, Konstantinos Tsaprounis, Toshimichi Usuba

Arch. Math. Log., 2016

2014

Bounded dagger principles.

Toshimichi Usuba

Math. Log. Q., 2014

2013

Hierarchies of ineffabilities.

Toshimichi Usuba

Math. Log. Q., 2013

2012

Splitting stationary sets in (λ).

Toshimichi Usuba

J. Symb. Log., 2012

Two-cardinal versions of weak compactness: Partitions of pairs.

Pierre Matet, Toshimichi Usuba

Ann. Pure Appl. Log., 2012

Notes on the partition property of P_κλ.

Yoshihiro Abe, Toshimichi Usuba

Arch. Math. Log., 2012

2007

Local saturation of the non-stationary ideal over P_klambda.

Toshimichi Usuba

Ann. Pure Appl. Log., 2007