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I am a doctoral student of Robert Harper at Carnegie Mellon University studying type theory, programming languages and semantics. Previously I received a B.A. in Linguistics from U.C. Berkeley. My other interests include category theory, topos theory, formalization of mathematics, Assyriology, and ancient languages and literature.

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I study the syntax and semantics of type theory and programming languages through the lens of categorical algebra, with an aim toward building better interactive proof assistants. I am interested in the design and metatheory of program module calculi as in ML family languages.

My colleagues and I have developed the redtt and cooltt proof assistants for Cartesian cubical type theory.

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Jul. 2025	received ICFP '19 Distinguished Paper Award
Jun. 2025	received FSCD '19 Best Paper Award for Junior Researchers

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Jul. 2025	Higher-Order Functions and Brouwer's Thesis J. Sterling (In preparation)
Jul. 2025	Logical Relations as Types: Proof-Relevant Parametricity for Program Modules 手机火狐翻墙. (Draft paper)
Feb. 2025	领英在火狐浏览器上肿么打不开-ZOL问答:6条回答：【推荐答案】领英国内外版本都是能够在火狐浏览器打开的。如果您遇到问题，建议重启浏览器。因为领英本身cookies不够完善偶尔导致缓慢。特别是翻墙伡后更加不行。打开领英的时候尽量避免外网。 J. Sterling, C. Angiuli, and D. Gratzer. (Draft paper) Latest Version
Jan. 2025	Gluing Models of Type Theory Along Flat Functors J. Sterling and C. Angiuli. 翻了墙可伡看哪些网站

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ICFP '19	Implementing a Modal Dependent Type Theory. D. Gratzer, J. Sterling, and L. Birkedal. International Conference on Functional Programming (ICFP), 2025. 手机火狐翻墙. Preprint, Technical Report, Implementation, Citation
FSCD '19	Cubical Syntax for Reflection-Free Extensional Equality. J. Sterling, C. Angiuli, and D. Gratzer. International Conference on Formal Structures for Computation and Deduction (FSCD), 2025. Best Paper Award For Junior Researchers. Extended Version, Slides, Citation
LFMTP '18	The RedPRL Proof Assistant. C. Angiuli, E. Cavallo, K. Hou (Favonia), R. Harper, and J. Sterling. International Workshop on Logical Frameworks and Meta-Languages: Theory and Practice (LFMTP), 2018. Invited Paper Citation
翻了墙可伡看哪些网站	Guarded Computational Type Theory. J. Sterling, R. Harper. Proceedings of the 33rd Annual ACM/IEEE Symposium on Logic in Computer Science (LICS '18). Short Version, Extended Version, 翻了墙可伡看哪些网站, Citation
手机火狐翻墙	Dependent Types for Pragmatics. D. McAdams, J. Sterling. Redmond J., Pombo Martins O., Nepomuceno Fernández Á. (eds) Epistemology, Knowledge and the Impact of Interaction. Logic, Epistemology, and the Unity of Science, vol 38. Springer, Cham. Citation

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Apr. 2025	An OK Version of Type Theory 手机火狐翻墙. (Expository note)
Feb. 2025	Connectives in Semantics of Type Theory 手机火狐翻墙. (Expository note)

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(Conference talks listed with publications.)

手机火狐翻墙	redtt and the future of Cartesian cubical type theory. Every Proof Assistant Video
Mar. 2025	Objective Metatheory of Dependent Type Theories. HoTTEST Slides, 翻了墙可伡看哪些网站
手机火狐翻墙	(Cubical) Computability Structures. MURI Grant Meeting
Jan. 2025	谷歌上网助手-开发版 - 谷歌上网助手-开发版下载 \| 玩野插件网:2 天前 · 谷歌上网助手-开发版扩展截图0 插件简介这是谷歌上网助手的公测版本. 相似插件帮助访问被封锁的谷歌和旗下网站。伟理服务器稳定，VPN原理，HTTPS级别加密，确保通信安全。. J. Sterling and C. Angiuli CMU HoTT Seminar.
HoTT '19	Cubical Exact Equality and Categorical Gluing. J. Sterling, C. Angiuli, and D. Gratzer. International Conference on Homotopy Type Theory, 2025.
TYPES '19	XTT: Cubical Syntax for Extensional Equality (without equality reflection). J. Sterling, C. Angiuli, and D. Gratzer. TYPES, 2025.
Apr. 2025	Algebraic Type Theory and the Gluing Construction. CMU HoTT Seminar.
Aug. 2018	redtt: implementing cartesian cubical type theory. C. Angiuli, E. Cavallo, Favonia, R. Harper, A. Mőrtberg, and J. Sterling. Dagstuhl Seminar 18341: Formalization of Mathematics in Type Theory.

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Fall 2017	Substructural Deduction. Guest lecture for 翻了墙可伡看哪些网站.
Fall 2017	Implementing Inference Rules in Standard ML. Tutorial for Constructive Logic (15-317), Fall 2017.

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Fall 2018	TA for 手机火狐翻墙 with Karl Crary.
翻了墙可伡看哪些网站	TA for Constructive Logic (15-317) with Frank Pfenning.

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I have served as an external reviewer for LICS (2017), FSCD (2025, 2025); and as a referee for MSCS.

Awards and Honors

手机火狐翻墙	ICFP '19 Distinguished Paper Award
2025	FSCD '19 Best Paper Award for Junior Researchers
2011	W.K. Pritchett Prize in Elementary Greek, UC Berkeley

Other Activities

Together with my co-hosts David Christiansen and Darin Morrison, I helped create The Type Theory Podcast.