Ryo Ohashi

According to our database, Ryo Ohashi authored at least 8 papers between 2008 and 2024.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2024

Efficient theta-based algorithms for computing (ℓ, ℓ)-isogenies on Kummer surfaces for arbitrary odd ℓ.

Ryo Yoshizumi, Hiroshi Onuki, Ryo Ohashi, Momonari Kudo, Koji Nuida

IACR Cryptol. ePrint Arch., 2024

An efficient collision attack on Castryck-Decru-Smith's hash function.

Ryo Ohashi, Hiroshi Onuki

IACR Cryptol. ePrint Arch., 2024

On the Rosenhain forms of superspecial curves of genus two.

Ryo Ohashi

Finite Fields Their Appl., 2024

2023

Computing superspecial hyperelliptic curves of genus 4 with automorphism group properly containing the Klein 4-group.

Ryo Ohashi, Momonari Kudo

CoRR, 2023

2022

Maximality of Ciani curves over finite fields.

Ryo Ohashi

Finite Fields Their Appl., 2022

Fast Enumeration of Superspecial Hyperelliptic Curves of Genus 4 with Automorphism Group V₄.

Ryo Ohashi, Momonari Kudo, Shushi Harashita

Proceedings of the Arithmetic of Finite Fields - 9th International Workshop, 2022

2018

Finite actions on the 2-sphere, the projective plane and I-bundles over the projective plane.

John Kalliongis, Ryo Ohashi

Ars Math. Contemp., 2018

2008

The Rational Homology Group of Out(<i>F_n </i>) for <i>n</i> ≤ 6.

Ryo Ohashi

Exp. Math., 2008