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I’m a William W. Elliott Assistant Research Professor of Math at Duke University (2020 – 2023).  My mentor at Duke is Ezra Miller. My short CV is here: CV_05/30/21.

I am interested in the theoretical foundations for persistence theory in topological data analysis and their applications to dynamical systems. For my research, I primarily exploit concepts from algebraic & combinatorial topology, (algebraic) combinatorics, metric geometry, commutative algebra, representation theory, and category theory, blending these with ideas of persistence in topological data analysis. I also often run into computational geometry & topology questions during my research.

I received a Math Ph.D. in May, 2020 from Ohio State. I was working under the guidance of Facundo Mémoli . Before that, I earned my Bachelor’s degree at Seoul National Univ. in South Korea.

Email: woojin [AT] 

Zoom Research Meeting:


May/07/2021. Elder-Rule-Staircodes for Augmented Metric Spaces has been accepted for publication in SIAM Journal on Applied Algebra and Geometry. arXiv preprint.

Apr/09/2021. I will give a contributed lecture titled The Persistent Topology of Dynamic Data at MSRI Hot Topic workshop: Topological Insights in Neuroscience (May 3-11, 2021).

Mar/31/2021. I will attend the workshop Metrics in Multiparameter Persistence, Lorentz Center (Jul 19-23, 2021).

Mar/30/2021.  I will give a contributed talk about “Interleaving by parts for persistence in a poset at IMSI-Topological Data Analysis on April 27.

Jan/6/2021.  A new paper “Interleaving by parts for persistence in a poset (with Memoli and Stefanou)” has been posted on arXiv.