Search Results for author: John C. Baez

Found 4 papers, 1 papers with code

A Categorical Framework for Modeling with Stock and Flow Diagrams

1 code implementation1 Nov 2022 John C. Baez, Xiaoyan Li, Sophie Libkind, Nathaniel D. Osgood, Eric Redekopp

Stock and flow diagrams are already an important tool in epidemiology, but category theory lets us go further and treat these diagrams as mathematical entities in their own right.

Epidemiology

The Fundamental Theorem of Natural Selection

no code implementations12 Jul 2021 John C. Baez

Then $p = (p_1, \dots, p_n)$ is a time-dependent probability distribution, and we prove that its speed as measured by the Fisher information metric equals the variance in fitness.

Vocal Bursts Type Prediction

This Week's Finds in Mathematical Physics (1-50)

no code implementations11 Jan 2021 John C. Baez

These are the first 50 issues of This Week's Finds of Mathematical Physics, from January 19, 1993 to March 12, 1995.

History and Overview Mathematical Physics Mathematical Physics

Physics, Topology, Logic and Computation: A Rosetta Stone

no code implementations2 Mar 2009 John C. Baez, Mike Stay

In physics, Feynman diagrams are used to reason about quantum processes.

Quantum Physics Category Theory

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