Past Events

[Seminar] "Signs in real monopole Floer homology" by Jiakai Li

2026年9月16日 (水) 14:30 15:30
L5D23 and zoom

Title: Signs in real monopole Floer homology

 

Abstract

The computation of the 3-dimensional framed real Seiberg–Witten invariant of the branched double cover of a knot K is instrumental in Miyazawa's construction of exotic P^2-knots. This invariant, known as Miyazawa's degree invariant deg(K), is the Euler characteristic χ(HMR) of framed real monopole Floer homology (HMR).  A priori deg(K) is defined only up to an overall sign, since the real Dirac operator has no complex orientation. Worse, signs associated to distinct real spin^c structures are not comparable. Resolving the latter issue is essential for developing computational techniques for real Seiberg--WItten invariants.

 

I will explain how to fix the sign of the 3-dimensional count, in other words, define an absolute mod-two grading, via a mod-two index-theoretic correction term. This yields a total Euler characteristic \tilde{χ} that sums over all real spin^c structures, the analogue of \hat{χ} in real Heegaard Floer homology (HFR). Recent work of Srivastava provides the motivating results: an absolute mod-two grading in \hat{HFR} and the evaluation of \hat{χ} in terms of the Alexander polynomial at \sqrt{-1}. This is joint work with Ciprian Manolescu.

Falling Walls Lab Okinawa 2026

2026年9月15日 (火) 13:30 16:30
OIST Seminar Room B250

The Falling Walls Lab is an interdisciplinary format to showcase the next generation of top researchers developed and hosted annually by the Falling Walls Foundation in Berlin in November. In 3–minute talks, outstanding talents and innovative thinkers share their research projects, business models and social initiatives with an interdisciplinary audience and jury. Academic institutions worldwide are invited to host their own Falling Walls Lab and to send their winner/s to the Falling Walls Lab Finale in Berlin.

Public Lecture: A World From a Sheet of Paper by Tadashi Tokieda

2026年9月11日 (金) 16:30 17:30
OIST Seminar Room Lab4 E48

Public Lecture: A world from a sheet of paper

Open to all interested in the topic!
OISTにて開催される  Tadashi Tokieda 氏による公開講演に、ぜひご参加ください。

Workshop on "Gauge Theory, Topology, and Physics" (TSVP-TP26GT)

2026年9月7日 (月) (All day)2026年9月11日 (金) (All day)
OIST Seminar Room Lab 5 D23

Motivated by physics, Gauge theory has a long history of spectacular applications in mathematics. Recent years have seen a number of new breakthroughs deepening the connection between mathematics and physics. This workshop aims to bring together leading researchers to speak about the latest topics in this field.

This Autumn School is part of TSVP Thematic Program “New Frontiers in Gauge Theory, Topology, and Physics” (TP26GT)
*OIST members and visiting students/researchers are welcome to attend all scientific sessions without registration.

Workshop: "Women in Gauge Theory" (TSVP-TP26GT)

2026年9月4日 (金) (All day)
OIST Seminar Room Lab 5 D23

This one-day workshop will be held during the same week as the Autumn School and will feature talks by leading women researchers. It will bring together experts from a broad range of research areas in Geometry, Topology, and Mathematical Physics.

This Autumn School is part of TSVP Thematic Program “New Frontiers in Gauge Theory, Topology, and Physics” (TP26GT)
*OIST members and visiting students/researchers are welcome to attend all scientific sessions without registration.

Public Lecture: "3-Manifolds and Langlands Duality" by Tasuki Kinjo

2026年9月3日 (木) 16:10 17:10
L4E48 (venue changed!)

Public Lecture: "3-Manifolds and Langlands Duality" by Tasuki Kinjo (RIMS, Kyoto University)

Open to all interested in the topic!
OISTにて開催される Tasuki Kinjo 氏による公開講演に、ぜひご参加ください。

TSVP Talk: "Understanding How Fungi See Light" by Tom Richards

2026年9月2日 (水) 15:00 16:00
L5D23 and zoom

TSVP Talk
Language: English (no interpretation).
Target audience: General audience / everyone at OIST and beyond.
Freely accessible to all OIST members and guests without registration (also via Zoom).

Autumn School on "Gauge Theory, Topology, and Physics" (TSVP-TP26GT)

2026年8月31日 (月) (All day)2026年9月3日 (木) (All day)
OIST Seminar Room Lab 5 D23

This Autumn School is part of TSVP Thematic Program “New Frontiers in Gauge Theory, Topology, and Physics” (TP26GT)

*OIST members and visiting students/researchers are welcome to attend all scientific sessions without registration.

TSVP Talk: "Machine Learning Guided Discovery of Stereoselective Polymerization Catalysts" by Rong Tong

2026年8月28日 (金) 15:00 16:00
L5D23 and zoom

TSVP Talk
Language: English (no interpretation).
Target audience: General audience / everyone at OIST and beyond.
Freely accessible to all OIST members and guests without registration (also via Zoom).

[Call for Registration] Ryudai-OIST Joint Symposium

2026年8月24日 (月) (All day)2026年9月12日 (土) (All day)
Sydney Brenner Lecture Theater (Seminar Room B250)

Ryudai-OIST Joint Symposium

This symposium brings together researchers from the University of the Ryukyus School of Medicine and OIST to share their research and explore opportunities for scientific exchange.
By fostering interactions across institutions and disciplines, the event aims to strengthen connections, encourage collaboration, and promote the development of new research partnerships.
All researchers and students from the University of the Ryukyus and OIST are welcome to participate, and attendees are invited to present their work during the poster session.

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