Jae Choon Cha :: 차재춘

Research: Geometric Topology

Organizer, Memorial Conference of Late Professor Kwun, Kyung Whan, March 28, 2025, Pohang, Korea.
Program Committee, The 20th East Asian Conference on Geometric Topology, February 4-7, 2025, University of Tokyo, Japan.
Program Committee, The 19th East Asian Conference on Geometric Topology, February 19-22, 2024, RIMS, Kyoto University, Japan.
Program Committee, The 18th East Asian Conference on Geometric Topology, February 6-9, 2023, online conference hosted by Soochow University.
Organizer, 2022 Fall PK² Topology Workshop, November 1-4, 2022, Busan, Korea.

Selected Publications

Light bulb smoothing for topological surfaces in 4-manifolds (with Byeorhi Kim)
Journal of the European Mathematical Society (JEMS), to appear.
• Published (Online First) • Preprint arXiv:2303.12857
Transfinite Milnor invariants for 3-manifolds (with Kent E. Orr)
Journal of the European Mathematical Society (JEMS) 26 (2024), no. 8, 2971–3046.
• Published • Preprint arxiv:2002.03208
A topological approach to Cheeger-Gromov universal bounds for von Neumann ρ-invariants
Communications on Pure and Applied Mathematics 69 (2016), no. 6, 1154–1209.
• Published • Preprint arXiv:1405.1805
Casson towers and slice links (with Mark Powell)
Inventiones Mathematicae 205 (2016), no.2, 413–457.
• Published • Preprint arXiv:1411.1621
$L^2$-signatures, homology localization, and amenable groups (with Kent E. Orr)
Communications on Pure and Applied Mathematics 65 (2012), no. 6, 790–832.
• Published • Preprint arXiv:0910.3700
Link concordance, homology cobordism, and Hirzebruch-type defects from iterated $p$-covers
Journal of the European Mathematical Society (JEMS) 12 (2010), no. 3, 555–610.
• Published • Preprint arXiv:0705.0088
The structure of the rational concordance group of knots
Memoirs of the American Mathematical Society 189 (2007), no. 885, x+95pp.
• Published • Google Books • Preprint arXiv:math/0609408