Shonan Meeting 246

Tensor Isomorphism: Algorithms, Geometry and Applications

Last updated on Apr 22, 2026

About

Isomorphism problems for algebraic structures form a central family of algorithmic questions, with connections to graph isomorphism, group isomorphism, computer algebra, cryptography, quantum information, and algebraic geometry. The meeting aims to create space for tutorials, research talks, open problems, and informal discussion on the algorithmic, geometric, and applied aspects of tensor isomorphism.

Dates: May 25-29, 2026

Check-in: May 24, 2026

Venue: Shonan Village Center ( Access)

Official page: NII Shonan Meeting No. 246

Organizers:

NameAffiliation
François Le GallNagoya University
Yinan LiWuhan University
Joshua MaglioneUniversity of Galway

Topics

The meeting will center on three themes.

  1. Algorithms for the Tensor Isomorphism Problem. Tensor isomorphism asks whether two tensors are equivalent under local general linear group actions. This theme will discuss faster algorithms for tensor isomorphism and related algebraic isomorphism problems, including connections with group isomorphism.
  2. Algebraic and geometric structure of tensor isomorphism. This theme will explore algebraic and geometric tools for tensors, including structures such as associated algebras and hypersurfaces, and their role in algorithms.
  3. Applications of the Tensor Isomorphism Problem. This theme will cover applications in areas such as cryptography, quantum information, computer algebra, graph theory, group theory, representation theory, and the enumeration of algebraic structures.

Schedule

Check-in: Sunday, May 24 15:00 – 19:00

Welcome Banquet: Sunday, May 24 19:00 – 21:00

TimeMay 25May 26May 27May 28May 29
9:00-9:40Youming QiaoJames WilsonHarold NieuwboerChristian IkenmeyerMichael Levet
9:40-10:20Youming QiaoJames WilsonDhara ThakkarChristian IkenmeyerSteven Duong
10:20-10:40Tea breakTea breakTea breakTea breakTea break
10:40-11:20Nitin SaxenaColva Roney-DougalOpen problem SessionJ. M. LandsbergMaksym Zubkov
11:20-12:00Pascal SchwizterBettina EickOpen problem SessionMartin KassabovSummary of the Workshop
12:00-2:00Lunch breakLunch breakLunch breakLunch breakLunch break
2:00-2:40Antonie JouxChristopher VollExcursion: Jomyoji and Hokokuji temple with Japanese Tea ceremonyElina RobevaFree discussion
2:40-3:20Fang SongTobias RossmanNick Vannieuwenhoven
3:20-3:40Tea breakTea breakTea break
3:40-4:20Xiaorui SunPeter BrooksbankJeroen Zuiddam
4:20-5:30Free discussionFree discussionFree discussion

Participants

NameAffiliation
Joux AntonieCISPA Helmholtz Center for Information Security
Peter BrookbankBucknell University
Steven DuongUniversity of Wollongong
Bettina EickTechnical University of Braunschweig
Murray ElderUniversity of Technology Sydney
Christian IkenmeyerUniversity of Warwick
Martin KassabovCornell University
Joseph LandsbergTexas A&M University
Francois Le GallNagoya University
Seungjai LeeIncheon National University
Michael LevetCollege of Charleston
Yinan LiWuhan University
Joshua MaglioneUniversity of Galway
Takunari MiyazakiTrinity College
Harold NieuwboerUniversity of Copenhagen
Eamonn O’BrienUniversity of Auckland
Youming QiaoUniversity of Technology Sydney
Elina RobevaUniversity of British Columbia
Colva Roney-DougalUniversity of St Andrews
Tobias RossmannUniversity of Galway
Nitin SaxenaIIT Kanpur
Pascal SchwizterTechnical University of Darmstadt
Fang SongPortland State Univeristy
Xiaorui SunUniversity of Illinois at Chicago
Gang TangWuhan University
Dhara ThakkarNagoya University
Nick VannieuwenhovenKU Leuven
Antonios VarvitsiotisSingapore University of Technology and Design / Centre for Quantum Technologies, NUS
Christopher VollUniversität Bielefeld
Yingjie WangNanyang Technology University
James WilsonColorado State University
Maksym ZubkovUniversity of British Columbia
Jeroen ZuiddamUniversity of Amsterdam

Acknowledgement

National Institute of Informatics, Japan.