Yutaka YOSHIIAssociate Professor
■Researcher basic information
Organization
- College of Education Training Course for School Teachers Program for Subject Education / Major in Mathematics Education
- Graduate School of Education(Course for Professional degree ) Division of Professional Teacher Education Professional Course in School Subjects
- Faculty of Basic Natural Science Domain of Mathematics and Informatic
Research Keyword
Educational Background
Career
■Research activity information
Paper
- Certain linear isomorphisms for hyperalgebras relative to a Chevalley group
Yutaka Yoshii
Journal of Algebra and Its Applications, Jun. 2025, [Reviewed] - Generating sets of the Jacobson radical of the hyperalgebra of (SL2)r
Yutaka Yoshii
Journal of Computational Algebra, Mar. 2024, [Reviewed] - Some results on certain finite-dimensional subalgebras of the hyperalgebra of a universal Chevalley group
Yutaka Yoshii
Journal of Lie Theory, Dec. 2022, [Reviewed] - A basis of a certain module for the hyperalgebra of (SL2)r and some applications
Yutaka Yoshii, In the hyperalgebra Ur of the rth Frobenius kernel (SL2)r of the algebraic group SL2, we construct a basis of the Ur-module generated by a certain element which was given by the author before. As its applications, we also prove some results on the Ur-modules and the algebra Ur., World Scientific
Journal of Algebra and Its Applications, Sep. 2022, [Reviewed] - Utilization of mathematical knowledge in history education: from land surveying practice
M.Chiba; Y.Yoshii; T.Onishi
茨城大学教育実践研究, Dec. 2019 - Projective modules for the subalgebra of degree 0 in a finite-dimensional hyperalgebra of type A_1
Yutaka Yoshii
Proceedings of the American Mathematical Society, May 2018, [Reviewed] - 小学校算数科における学習内容の統合的・発展的な扱い
小口祐一; 梅津健一郎; 栗原博之; 松村初; 吉井豊
茨城大学教育学部紀要(教育科学), 2018 - A tensor product of the Steinberg module and a certain simple kG(p(r))-module
Yutaka Yoshii
COMMUNICATIONS IN ALGEBRA, 2017, [Reviewed] - Primitive Idempotents of the Hyperalgebra for the r-th Frobenius kernel of SL(2, k)
Yutaka Yoshii
JOURNAL OF LIE THEORY, 2017, [Reviewed] - A generalization of Pillen's theorem for principal series modules II
Yutaka Yoshii
JOURNAL OF ALGEBRA, May 2015, [Reviewed] - A Remark on Pillen's Theorem for Projective Indecomposable kG(n)-Modules
Yutaka Yoshii
JOURNAL OF LIE THEORY, 2013, [Reviewed] - A GENERALIZATION OF PILLEN'S THEOREM FOR PRINCIPAL SERIES MODULES
Yutaka Yoshii
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY, Nov. 2012, [Reviewed] - ON THE FROBENIUS-PERRON EIGENVALUES OF CARTAN MATRICES FOR SOME FINITE GROUPS
Yutaka Yoshii
JOURNAL OF ALGEBRA AND ITS APPLICATIONS, Jun. 2011, [Reviewed] - Eigenvalues of Cartan matrices of principal 3-blocks of finite groups with abelian Sylow 3-subgroups
Shigeo Koshitani; Yutaka Yoshii
JOURNAL OF ALGEBRA, Oct. 2010, [Reviewed] - Broue's conjecture for the nonprincipal block of SL(2, q) with full defect
Yutaka Yoshii
JOURNAL OF ALGEBRA, May 2009, [Reviewed]
Lectures, oral presentations, etc.
- Some elements of the hyperalgebra of SL(2,k) in positive characteristic and their applications
吉井 豊
RIMS共同研究(公開型)「組合せ論的表現論の発展」, 16 Oct. 2024, [Invited] - Some commutation formulas and linear isomorphisms for the hyperalgebra of a simple algebraic group
吉井 豊
第56回環論および表現論シンポジウム, 16 Sep. 2024 - 単純代数群の超代数における積が定めるいくつかの線形同型写像
吉井 豊
日本数学会秋季総合分科会, 04 Sep. 2024 - 単純代数群の超代数のある部分代数に関するいくつかの結果
吉井 豊
日本数学会年会, 15 Mar. 2023, 日本数学会
20230315, 20230318 - Structure of certain modules for the hyperalgebra Dist((SL_2)_r)
Yutaka Yoshii
日本数学会年会, Mar. 2022 - 超代数Dist(SL_{2,r})のJacobson根基の生成系
吉井 豊
日本数学会年会, Mar. 2019 - 代数群SL(2,k)のFrobenius核の超代数における次数0の部分代数の表現
第23回代数学若手研究会, Mar. 2018 - A tensor product of certain two simple modules for finite Chevalley groups
RIMS研究集会「有限群・代数的組合せ論・頂点作用素代数の研究」, Dec. 2016 - A direct sum decomposition of the kG(p^r)-submodule generated by the highest weight vector of a certain Weyl G-module
Yutaka Yoshii
RIMS研究集会「有限群のコホモロジー論とその周辺」, Feb. 2015 - 有限Chevalley群の2(h-1)-deepなウェイトに対する射影直既約加群のLoewy列
吉井 豊
日本数学会年会, Mar. 2013 - Generators in the socle series for principal series modules
Yutaka Yoshii
研究集会「有限群の表現論およびその周辺」, Sep. 2012 - Weyl加群の最高ウェイトベクトルが生成するkG(n)-加群
吉井 豊
日本数学会年会, Mar. 2012 - Weyl modules and principal series modules
Yutaka Yoshii
RIMS研究集会「組合せ論的表現論の拡がり」, Oct. 2011 - 有限群のブロックに対するCartan行列の固有値
越谷 重夫; 吉井 豊
日本数学会秋季総合分科会, Sep. 2010 - 2次の有限特殊線形群の非主ブロックのBroue予想
吉井 豊
日本数学会年会, Mar. 2010 - いくつかのLie型有限群のブロックに対するCartan行列の最大固有値
吉井 豊
日本数学会年会, Mar. 2010 - Eigenvalues of Cartan matrices for group algebras of finite groups
Yutaka Yoshii
RIMS研究集会「代数的組合せ論および関連する群と代数」, Nov. 2009 - Broue's conjecture of SL(2,q) in the defining characteristic
Yutaka Yoshii
第11回代数群と量子群の表現論研究集会, May 2008 - Nonprincipal block of SL(2,q)
Yutaka Yoshii
RIMS研究集会「有限群のコホモロジー論の研究」, Aug. 2007