Toshimichi Usuba

Scopus著者プロファイル

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年別の研究成果

Pureに変更を加えた場合、すぐここに表示されます。

29 Article
2 Conference contribution

29 件

フィルター

2022
C^⁎-embedding and P-embedding in subspaces of products of ordinals
Kemoto, N. & Usuba, T., 2022 8月 15, In: Topology and its Applications. 318, 108194.
研究成果: Article › 査読
Equalities for the extent of infinite products and Σ-products
Hirata, Y., Usuba, T. & Yajima, Y., 2022 2月 15, In: Topology and its Applications. 307, 107946.
研究成果: Article › 査読
2021
Strongly compact cardinals and the continuum function
Apter, A. W., Dimopoulos, S. & Usuba, T., 2021 10月 1, In: Annals of Pure and Applied Logic. 172, 9, 103013.
研究成果: Article › 査読
1 被引用数 (Scopus)
2020
A note on δ-strongly compact cardinals
Usuba, T., 2020, (Accepted/In press) In: Topology and its Applications. 107538.
研究成果: Article › 査読
2019
A note on the tightness of G_δ-modifications
Usuba, T., 2019 9月 15, In: Topology and its Applications. 265, 106820.
研究成果: Article › 査読
3 被引用数 (Scopus)
Extendible cardinals and the mantle
Usuba, T., 2019 2月 5, In: Archive for Mathematical Logic. 58, 1-2, p. 71-75 5 p.
研究成果: Article › 査読
2 被引用数 (Scopus)
G _δ -topology and compact cardinals
Usuba, T., 2019, In: Fundamenta Mathematicae. 246, 1, p. 71-87 17 p.
研究成果: Article › 査読
3 被引用数 (Scopus)
On the existence of skinny stationary subsets
Matsubara, Y., Sakai, H. & Usuba, T., 2019 5月, In: Annals of Pure and Applied Logic. 170, 5, p. 539-557 19 p.
研究成果: Article › 査読
2 被引用数 (Scopus)
Products of Lindelöf spaces with points G_δ
Usuba, T., 2019 2月 1, In: Topology and its Applications. 252, p. 90-96 7 p.
研究成果: Article › 査読
2018
New combinatorial principle on singular cardinals and normal ideals
Usuba, T., 2018 11月, In: Mathematical Logic Quarterly. 64, 4-5, p. 395-408 14 p.
研究成果: Article › 査読
2017
Large regular Lindelöf spaces with points Gδ
Usuba, T., 2017, In: Fundamenta Mathematicae. 237, 3, p. 249-260 12 p.
研究成果: Article › 査読
1 被引用数 (Scopus)
The downward directed grounds hypothesis and very large cardinals
Usuba, T., 2017 12月 1, In: Journal of Mathematical Logic. 17, 2, 1750009.
研究成果: Article › 査読
15 被引用数 (Scopus)
2016
Reflection principles for uω₂and the semi-stationary reflection principle
Usuba, T., 2016, In: Journal of the Mathematical Society of Japan. 68, 3, p. 1081-1098 18 p.
研究成果: Article › 査読
1 被引用数 (Scopus)
Subtlety and partition relations
Usuba, T., 2016 2月 1, In: Mathematical Logic Quarterly. 62, 1-2, p. 59-71 13 p.
研究成果: Article › 査読
Superstrong and other large cardinals are never Laver indestructible
Bagaria, J., Hamkins, J. D., Tsaprounis, K. & Usuba, T., 2016 2月 1, In: Archive for Mathematical Logic. 55, 1-2, p. 19-35 17 p.
研究成果: Article › 査読
5 被引用数 (Scopus)
2015
Two-cardinal versions of weak compactness: Partitions of triples
Matet, P. & Usuba, T., 2015, In: Journal of the Mathematical Society of Japan. 67, 1, p. 207-230 24 p.
研究成果: Article › 査読
1 被引用数 (Scopus)
2014
Bounded dagger principles
Usuba, T., 2014 1月 1, In: Mathematical Logic Quarterly. 60, 4-5, p. 266-272 7 p.
研究成果: Article › 査読
2 被引用数 (Scopus)
Characters of countably tight spaces and inaccessible cardinals
Usuba, T., 2014, In: Topology and its Applications. 161, 1, p. 95-106 12 p.
研究成果: Article › 査読
Lindelöf spaces with small pseudocharacter and an analog of Borel's conjecture for subsets of [0; 1]@1
Tall, F. D. & Usuba, T., 2014 1月 1, In: Houston Journal of Mathematics. 40, 4, p. 1299-1309 11 p.
研究成果: Article › 査読
2 被引用数 (Scopus)
The cardinality of compact spaces satisfying the countable chain condition
Usuba, T., 2014 9月 1, In: Topology and its Applications. 174, p. 41-55 15 p.
研究成果: Article › 査読
2013
Hierarchies of ineffabilities
Usuba, T., 2013 5月 1, In: Mathematical Logic Quarterly. 59, 3, p. 230-237 8 p.
研究成果: Article › 査読
1 被引用数 (Scopus)
On skinny stationary subsets of Pkλ
Matsubara, Y. & Usuba, T., 2013 6月, In: Journal of Symbolic Logic. 78, 2, p. 667-680 14 p.
研究成果: Article › 査読
1 被引用数 (Scopus)
2012
Notes on the partition property of Pκλ
Abe, Y. & Usuba, T., 2012 8月 1, In: Archive for Mathematical Logic. 51, 5-6, p. 575-589 15 p.
研究成果: Article › 査読
2 被引用数 (Scopus)
Splitting stationary sets in p(λ)
Usuba, T., 2012 3月, In: Journal of Symbolic Logic. 77, 1, p. 49-62 14 p.
研究成果: Article › 査読
1 被引用数 (Scopus)
Two-cardinal versions of weak compactness: Partitions of pairs
Matet, P. & Usuba, T., 2012 1月, In: Annals of Pure and Applied Logic. 163, 1, p. 1-22 22 p.
研究成果: Article › 査読
3 被引用数 (Scopus)
2010
Fodor-type Reflection Principle and reflection of metrizability and meta-Lindelöfness
Fuchino, S., Juhász, I., Soukup, L., Szentmiklóssy, Z. & Usuba, T., 2010 6月, In: Topology and its Applications. 157, 8, p. 1415-1429 15 p.
研究成果: Article › 査読

Open Access
11 被引用数 (Scopus)
2009
Splitting stationary sets in P_κλ for λ with small cofinality
Usuba, T., 2009, In: Fundamenta Mathematicae. 205, 3, p. 265-287 23 p.
研究成果: Article › 査読
6 被引用数 (Scopus)
2008

Ineffability of P_κλ for λ with small cofinality
Usuba, T., 2008 7月, In: Journal of the Mathematical Society of Japan. 60, 3, p. 935-954 20 p.
研究成果: Article › 査読

10 被引用数 (Scopus)
2007
Local saturation of the non-stationary ideal over P_κ λ
Usuba, T., 2007 11月, In: Annals of Pure and Applied Logic. 149, 1-3, p. 100-123 24 p.
研究成果: Article › 査読

Open Access

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