Research

1. (with Masahiko Yoshinaga) Divides with cusps and Kirby diagrams for line arrangements,  Topology and its Applications 313 (2022), Paper No. 107989  (arXiv:2013.15262)

2. $¥mathbb{Z}$-local system cohomology of hyperplane arrangements and a Cohen-Dimca-Orlik type theorem, International Journal of Mathematics, Vol 34 (2023), no. 8, 2350044 (arXiv:2209.02237)

3. (with Suguru Ishibashi, Masahiko Yoshinaga) Betti numbers and torsions in homology groups of double coverings (arXiv:2209.02236), to appear in Adv. in Appl. Math.

4. (with Takuya Saito) Homogeneous quandles with commutative inner automorphism groups (arXiv:2403.07383), to appear in J. Algebra.

1. Handle decompositions and Kirby diagrams for the complements of plane algebraic curves (arXiv:2306.10519)

2. Divides with cusps and symmetric links (arxiv:2312.00422)

3. First homology groups of the Milnor fiber boundary for generic hyperplane arrangements in $¥mathbb{C}^3$ (arXiv:2404.01555)

1. Handle decomposition of line arrangements, Recent development in Arrangements, online, February 15, 2021.

2. Divides with cusps and Kirby diagrams for line arrangements, "Branched coverings, Degenerations, and Related Topics 2022", online, March 7, 2022 (invited)

3. Double coverings and integral local system cohomology of arrangements, Singularities, arrangements, and low-dim. topology II, JSPS-VAST Bilateral Joint Research Project Workshop, Keio University, November 26, 2022 (invited)

4. Double coverings and integral local system cohomology of arrangements, Combinatorics, geometry, and commutative algebra of hyperplane arrangements, Kyushu University, January 16, 2023, slide (invited)

5. Double coverings and integral local system cohomology of hyperplane arrangements, Geometry and Topology Seminar, Hanoi Institute of Mathematics, February 16, 2023 (invited)

6. Divides with cusps and symmetric links, JV2023 Quy Nhon Workshop "Topology of Singularities and Related Topics" (11-15 Sep. 2023) (invited)

7. Description of Kirby diagrams for plane curve complements via braid monodromy, Hyperplane arrangement 2023, Rikkyo University, Dec 11. 

Upcoming Talks:

1. Divides with cusps and Kirby diagrams for line arrangements, "Arrangements in Ticino", SUPSI, June 27- July 1, 2022 , pdf file

2. Double coverings and integral local system cohomology of hyperplane arrangements, Algebraic and topological interplay of algebraic varieties, June 12-June 17, 2023

3. First homology groups of the Milnor fiber boundary for generic arrangements in $¥mathbb{C}^3$, JARCS2024, November 4--November 7, Saitama University