Skip to content

Archive

Home Browse Courses Talks Study Paths

Directory

Institutions Speakers

Library

Playlists

The public archive for recorded scholarship—unabridged university courses, departmental colloquia, and structured study syllabi.

Archive

All Lectures
University Courses
Standalone Talks
Guided Study Paths
Institutions
Scholars & Speakers

Disciplines

Systems & CS
Engineering & Control
Theory & Algorithms
Biology & Neuro
AI & Machine Learning
Economics & Finance
Mathematics
Philosophy & Ethics
Physics & Cosmology
History & Humanities

Workspace

Saved Library
Study Notebook
About & Mission
Support & Errata
RSS Feed
Sitemap

© 2026 Lectern·Independent Academic Archive·Made in NYC

Press ⌘K to search · ? for shortcuts

Academic Discipline

Mathematics

Linear algebra, real and complex analysis, topology, differential geometry, probability, combinatorics, and number theory.

18courses·132standalone talks·428total lectures

Subfields

All Mathematics428 Calculus & Analysis164 Linear Algebra107 Topology & Geometry59 Category Theory, Topos Theory & Set Foundations56 Probability & Information Theory39 Combinatorics & Graph Theory34 Control & Dynamical Systems31 Convex Optimization21 Formal Methods & Type Theory20 Number Theory & Abstract Algebra18 Statistical Learning & Causality7 Algorithmic Information & Coding Theory5 Cryptography4 Computational Complexity3

Number Theory & Abstract Algebra— Groups, rings, fields, Galois theory, prime distributions, modular forms, and the Langlands program.

3 topics

All Number Theory & Abstract Algebra Group Theory & Representation Theory11 Prime Numbers, Modular Forms & Langlands4 Analytic Number Theory2

jknavigate↵watchcchaptersssavexwatched

Save

Positional Encodings and Group Theory in Transformers

Positional Encodings and Group Theory in Transformers

Mathematics·Research Seminar·Language Models & NLP · Grant Sanderson & Alok Puranik · Jane Street

Grant Sanderson&Alok Puranik

—

1:16:29

More categories

Systems & CS (432)Physics & Cosmology (404)AI & Machine Learning (213)History & Humanities (376)Philosophy & Ethics (264)Biology & Neuroscience (281)Economics & Finance (336)Algorithms & Theory (339)Engineering & Robotics (209)

Language Models & NLP · Number Theory & Abstract Algebra

1