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April 27 - 30, 2026
Room 202, Astronomy Mathematics Bldg., NTU

Aim & Scope

This workshop explores extremal transitions and mirror symmetry through geometric, analytic, arithmetic, and integral structures arising from Calabi–Yau moduli on both the A- and B-sides and their degenerations. It features four mini-courses (two 90-minute lectures each) by the organizers, providing structured introductions to central themes, together with 60-minute research talks by invited speakers on recent developments and open problems. The goal is to foster the exchange of ideas and to develop a common language across these interconnected areas.

Agenda with Title & Abstract  File

Speakers and Topics

Martin Guest ( Waseda University ) Gamma classes and tt*/real structure

Shinobu Hosono ( Gakushuin University ) Families of Calabi-Yau manifolds and mirror symmetry

Atsushi Kanazawa ( Waseda University ) Generalized Calabi-Yau geometry toward mirror symmetry

Chin-Lung Wang ( TIMS & National Taiwan University ) Quantum extremal transitions

Invited Speakers *Online

Konstantin Aleshkin ( Kavli Institute for the Physics and Mathematics of the Universe )

You-Cheng Chou ( Korea Institute for Advanced Study )

Ping-Hsun Chuang (National Taiwan University)

Yuki Koto ( Academia Sinica )

Shuang-Yen Lee ( National Taiwan University )

Tsung-Ju Lee ( National Cheng Kung University )

Fumihiko Sanda ( Chiba University )

Yota Shamoto* ( Yamato University )

Sz-Sheng Wang ( National Yang Ming Chiao Tung University )

Po-Sheng Wu ( National Taiwan University )

Jeng-Daw Yu ( TIMS & National Taiwan University )

Schedule *Online
April 27 (Monday)
09:00 - 10:30		Shinobu Hosono Families of Calabi-Yau manifolds and mirror symmetry I
10:50 - 11:50		You-Cheng Chou Moduli of generalized Lam\'e curves
13:00 - 14:30		Chin-Lung Wang Quantum extremal transitions I
14:50 - 15:50		Yuki Koto Quantum cohomology of GIT quotients and Fourier transforms
16:00 - 17:00		Po-sheng Wu Log-free curves for generalized Lamé equations and combinatorial structure
17:00 - 17:30		Q&A Session and Discussion
April 28 (Tuesday)
09:00 - 10:30		Atsushi Kanazawa Generalized Calabi-Yau geometry toward mirror symmetry I
10:50 - 11:50		Jeng-Daw Yu Finite monodromic Hodge structures and gamma motives
11:50 - 12:00		Group Photo
13:00 - 14:30		Martin Guest Gamma classes and tt*/real structure_Lecture 1: The Phenomenon
14:50 - 15:50		Yota Shamoto* Silde File A Riemann-Hilbert correspondence for closed 1-forms
16:00 - 17:00		Ping-Hsun Chuang On the arithmetic of symmetric powers of airy sheaves
17:00 - 17:30		Q&A Session and Discussion
18:00-		Banquet (Din Tai Fung, Xinsheng Branch・ディンタイフォン 鼎泰豐新生店) 台北市信義路二段277號 (捷運東門站6號出口) No. 277, Sec. 2, Xinyi Rd., Taipei City (MRT Dongmen Station Exit 6) 台北市信義路二段277号 (地下鉄東門駅6番出口)
April 29 (Wednesday)
09:00 - 10:30		Shinobu Hosono Slide File Families of Calabi-Yau manifolds and mirror symmetry II
10:50 - 11:50		Sz-Sheng Wang Slide File Quantum extremal transitions of 3-folds and special L-values
13:00 - 14:30		Chin-Lung Wang Quantum extremal transitions II
14:50 - 15:50		Konstantin Aleshkin Central charges and special geometry of abelian GLSM
16:00 - 17:00		Shuang-Yen Lee Quantum Fano transitions and special L-values
17:00 - 17:30		Q&A Session and Discussion
April 30 (Thursday)
09:00 - 10:30		Atsushi Kanazawa Generalized Calabi-Yau geometry toward mirror symmetry II
10:50 - 11:50		Fumihiko Sanda Towards an equivariant analogue of Dubrovin's conjecture
13:00 - 14:30		Martin Guest Gamma classes and tt*/real structure_Lecture 2: Progress and Difficulties
14:50 - 15:50		Tsung-Ju Lee Mirror duality between Calabi--Yau double covers
16:00 - 17:30		Q&A Session and Discussion

Organizers

Martin Guest ( Waseda University )

Shinobu Hosono ( Gakushuin University )

Atsushik Kanazawa ( Waseda University )

Chin-Lung Wang ( TIMS & National Taiwan University )

Sponsors

Taida Institute for Mathematical Sciences ( TIMS )

National Taiwan University ( National Taiwan University )

National Science and Technology Council ( NSTC )

Registration

Please click here or scan the the QR code below for registration by April 19.