@christosargyrop.bsky.social

Kale sales and autism

www.wmbriggs.com/post/58413/

Looking back at Martin Gardner’s RSA article

www.johndcook.com/blog/2025/08...

Gluons, quarks, letters, and envelopes

www.johndcook.com/blog/2025/03...

New post: Practical consequences of LLM tokenization details

www.johndcook.com/blog/2025/03...

Thanks!

Polynomial Encounters of the Third Kind

www.johndcook.com/blog/2025/02...

Does DeepSeek demonstrate that we don’t need as much compute power as we thought?

www.johndcook.com/blog/2025/02...

Protecting Privacy in the Age of AI: A Conversation with John Cook We discuss safeguarding sensitive information in data-intensive industries, the balance of preserving data utility and protecting privacy as AI applications raise new concerns, and methods like differ...

New podcast interview just dropped.

Protecting Privacy in the Age of AI: A Conversation with John Cook

www.trenegy.com/podcast/prot...

How the day of the week for New Years Day goes through a 28 year cycle.

The green diamonds represent leap years and the blue squares represent ordinary years.

Modal logic and science fiction

www.johndcook.com/blog/2022/01...

Unix Time and a Modest Proposal

www.johndcook.com/blog/2024/12...

Centered triangular numbers are the number of dots in images such as the one below.

The nth centered triangular number equals 1 + 3n(n + 1)/2.

Most popular posts of 2024

www.johndcook.com/blog/2024/12...

By the nth day of Christmas, my true love had sent to me n(n+1)(n+2)/6 gifts.

www.johndcook.com/blog/2009/12...

Intro to interval arithmetic. Applied to cosine iteration.

www.johndcook.com/blog/2024/12...

If you press the cosine key on a calculator over and over, you always get stuck on the same number.

This post takes a more sophisticated look at a child’s amusement.

www.johndcook.com/blog/2024/12...

A golden hospital gown is an allusion to The Emperor’s New Clothes, except the emperor is somewhere between sumptuously clothed and naked.

www.johndcook.com/blog/2024/12...

How many ways can you select six points in the plane so that every subset of three points forms the vertices of an isosceles triangle?

www.johndcook.com/blog/2024/12...

Bi-elliptic transfer orbit maneuver

www.johndcook.com/blog/2024/12...

Connecting powers of two and decibels

www.johndcook.com/blog/2022/02...

How to memorize the ASCII table

www.johndcook.com/blog/2022/05...

I don’t know.

Sphere of influence

www.johndcook.com/blog/2022/12...

My Mastodon posts are automatically posted to the Bluesky account @johndcook.mathstodon.xyz.ap.brid.gy

Asymmetric generation / verification costs

www.johndcook.com/blog/2024/11...

Number of elements in the nth row of the periodic table.

Cobweb plots

www.johndcook.com/blog/2020/01...