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February 2026

Geometry of the Mind

3 articles in this issue

Feature Articles

Deep technical expositions on mathematical topics, crafted for clarity and wonder.

The Brachistochrone: When Gravity Chooses a Curve
Feature Articles9 min · by Dr. Elena Vasquez

The Brachistochrone: When Gravity Chooses a Curve

The problem that launched the calculus of variations

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Problem Section

Curated problems and full solutions — from elegant puzzles to competition-grade challenges.

Three Elegant Proofs of the Infinitude of Primes
Problem Section8 min · by Prof. Ada Okonkwo

Three Elegant Proofs of the Infinitude of Primes

Euclid, Euler, and Erdős walk into a proof

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Math in the Wild

Applications of mathematics to science, engineering, finance, and everyday life.

Neural Networks Through the Lens of Differential Geometry
Interactive
Math in the Wild16 min · by James Whitfield

Neural Networks Through the Lens of Differential Geometry

How manifold theory illuminates what deep learning actually does

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