Topological Groups
Book
Formal Antecedent
Foundations and Logic
Citation
Lev S. Pontryagin. (1939). Topological Groups. Princeton University Press.
Why this reference is included
Pontryagin’s Topological Groups (1939), published by Princeton University Press, sits in the program’s reference corpus as a standing technical source. Cited in Book II (Categorical Holomorphy), Part 9, Chapter Boundary Characters via Idempotent Support, where the program draws on it in the context of “In classical Fourier analysis on a group G , a character χ : G → ℂ^× is a ``frequency detector’’ — it measures how much of a given frequency component is present in a signal.”
Cited in
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Book II — Categorical Holomorphy Part 9Chapter Boundary Characters via Idempotent Support
In classical Fourier analysis on a group G , a character χ : G → ℂ^× is a ``frequency detector'' — it measures how much of a given frequency component is present in a signal