https://youtube.com/feeds/videos.xml?channel_id=UCrn9HkH3trWYpxzlW9l8eSg

Origin of the Integral ∫ Symbol

EpsilonDelta Nov 6, 2025 Updated Feb 9, 2026

https://www.youtube.com/v/6jWz_0y8R5w?version=3 (application/x-shockwave-flash)

yt:video:6jWz_0y8R5w

Extensions

Stop Using Sine & Cosine | Exponential Form of Trigonometric Functions

EpsilonDelta Nov 4, 2025 Updated Apr 21, 2026

https://www.youtube.com/v/8SEASGJBVfQ?version=3 (application/x-shockwave-flash)

yt:video:8SEASGJBVfQ

Extensions

What is π 𝐍𝐎𝐓 Doing Here?! ζ(3), ζ(5), and Algebraic Independence

EpsilonDelta Oct 29, 2025 Updated Apr 14, 2026

https://www.youtube.com/v/HUmy7ivGALE?version=3 (application/x-shockwave-flash)

yt:video:HUmy7ivGALE

Extensions

Do You REALLY Understand Derivative? | Symmetric Derivative and Generalized Pseudoderivative

EpsilonDelta Oct 26, 2025 Updated Apr 30, 2026

https://www.youtube.com/v/oIhdrMh3UJw?version=3 (application/x-shockwave-flash)

yt:video:oIhdrMh3UJw

Extensions

Superpolynomial & Subexponential?

EpsilonDelta Oct 20, 2025 Updated May 4, 2026

https://www.youtube.com/v/vfrzHvXsG0E?version=3 (application/x-shockwave-flash)

yt:video:vfrzHvXsG0E

Extensions

Most Gamers Don’t Know What Avg FPS Is | Harmonic Mean

EpsilonDelta Oct 18, 2025 Updated Feb 10, 2026

https://www.youtube.com/v/WNjHrdhd9mo?version=3 (application/x-shockwave-flash)

yt:video:WNjHrdhd9mo

Extensions

All of These Are Exponential Growth

EpsilonDelta Oct 15, 2025 Updated Apr 14, 2026

https://www.youtube.com/v/5aP2MYplY8M?version=3 (application/x-shockwave-flash)

yt:video:5aP2MYplY8M

Extensions

The Unsolvable Problem Cranks Can’t Resist | Angle Trisection

EpsilonDelta Oct 1, 2025 Updated Apr 28, 2026

https://www.youtube.com/v/wtvLLace80o?version=3 (application/x-shockwave-flash)

yt:video:wtvLLace80o

Extensions

How Many Dimensions Do We Need? | Embedding and Immersion of Manifolds

EpsilonDelta Sep 5, 2025 Updated May 5, 2026

https://www.youtube.com/v/HSYhHqI2CnY?version=3 (application/x-shockwave-flash)

yt:video:HSYhHqI2CnY

Extensions

How to Describe Stars with Math | Schläfli Symbol

EpsilonDelta Jul 27, 2025 Updated Apr 21, 2026

https://www.youtube.com/v/IIVAKIDJdx8?version=3 (application/x-shockwave-flash)

yt:video:IIVAKIDJdx8

Extensions

"Proof" That 0.999… ≠ 1 | Why We Study Mathematical Analysis

EpsilonDelta Apr 25, 2025 Updated May 5, 2026

https://www.youtube.com/v/vX5_dKaWLOw?version=3 (application/x-shockwave-flash)

yt:video:vX5_dKaWLOw

Extensions

How Many Times Can Two Curves Intersect? Bezout's Theorem

EpsilonDelta Mar 24, 2025 Updated Apr 13, 2026

https://www.youtube.com/v/qwDzLWi7EGM?version=3 (application/x-shockwave-flash)

yt:video:qwDzLWi7EGM

Extensions

Cross Product Is NOT a Vector?! Pseudovectors

EpsilonDelta Mar 19, 2025 Updated May 15, 2026

https://www.youtube.com/v/VHE03TIhqXY?version=3 (application/x-shockwave-flash)

yt:video:VHE03TIhqXY

Extensions

Making Sense of Nonsense: Analytic Continuation/p-adic Numbers

EpsilonDelta Mar 13, 2025 Updated Apr 29, 2026

https://www.youtube.com/v/P21IAO1oghI?version=3 (application/x-shockwave-flash)

yt:video:P21IAO1oghI

Extensions

Continuously Differentiable, Nowhere 2nd Differentiable?!

EpsilonDelta Feb 24, 2025 Updated Jun 7, 2025

https://www.youtube.com/v/ej8zDpONwBY?version=3 (application/x-shockwave-flash)

yt:video:ej8zDpONwBY

Extensions