Welcome!

Welcome to the 169th edition of the Carnival of Mathematics! This monthly roundup of some of the best and latest math blogs. As per tradition let’s begin with some trivia about the number 169. It’s a square!

And if we reverse every number above, it still remains a square

Blogs

First up we have a neat relationship between Cauchy’s integral formula and the mean value theorem by Shiny Pebbles and Other Stuff.

On the very applied side, Jeremny Kun at Math & Programming has a guide on how different techniques mathematicians can use parsing in their work. He goes over the differences between regular expressions and parser generator as well as when to use which one.

Here’s a more philosophical piece from Manan Shah about the gap between what data science can do and what people, especially non technical people, expect it to be able to do.

John D Cook has an interesting article about how random projections in high-dimensional space defy intuition.

Solving a difficult problem is one of the best feelings in the world. Unfortunately sometimes we can solve all our problems just from first principles. Murray Bourne wrote up a post about “How to search for solutions to math questions”

Youtubers

3Blue1Brown released the second chapter in his series on differential equations. It’s all about Partial Differential Equations, and is full of amazing visuals! I especially enjoyed how he motivated the governing equation using finite differences.

Another YouTuber, Math and Tea, has a video out on quaternions. He’s a small youtuber, and assistant professor at OSU. I’ve loved watching his videos for the last year and he definitely deserves more visibility. You should check him out!

Hannah Fry gives a recorded talk about should computers run the world for the Royal Institute.

Remaining with YouTubers for one more entry, Primer creates great applied math simulations. This month he started a series on supply and demand.

Traditional Venues

Turning back to more traditional publishing venues we have Evelyn Lamb’s article about the adorable ignorance of mathematicians and Quanta’s article about how mathematicians have discovered the perfect way to multiply!

Still Want More?

If you still want more articles there’s plenty of previous Carnivals of Math at the aperiodical or old Gereshes posts about Newtons method, and the n-Body problem!

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