1,000 Years of Congruent Numbers
These integers have inspired one of the most important unsolved problems in mathematics
Stories by Evelyn Lamb
A Feat of Mathematical Eponymy
2400 years separate two people with whom this computer science term is associated
Happy Numbers Have No Density
These blissful integers are a bit mysterious
The Funniest Math Joke
Because you know it has to be when you write 400 words explaining it
![Inka History in Knots [Book Review]](https://static.scientificamerican.com/blogs/cache/file/F053A741-C357-4B11-8008CEE63E7DF810_agenda.jpg?w=275&h=154&fit=crop)
Inka History in Knots [Book Review]
Gary Urton explains what we can and cannot know about Inka khipus
A Curious Sequence of Prime Numbers
Euclid’s proof of the infinitude of primes opens the door to some interesting questions
A Journey through Gromov's Gap
Moon Duchin shares an abstract theorem with surprising connections to gerrymandering
The Serendipity of Swiss Cheese
This holey mathematical object was discovered by a Swiss mathematician and then forgotten for decades
I Can Has Numberz?
Mathematicians can be adorably ignorant...
“Like All Good Stories, It Starts with Pigeons”
Suresh Venkatasubramanian tells us about one of the most important tools he uses to root out algorithmic bias
Why Mirror Symmetry Is Like Fancy Ramen
Ursula Whitcher tells us why she loves this physics-inspired branch of mathematics
Why Isn't 1 a Prime Number?
And how long has it been a number?
Five Reasons to Love the Pythagorean Theorem
Middle school math teacher Fawn Nguyen tells us why a classic right triangle fact is her favorite mathematical result
The Mathematical Phrase that Melts My Brain
What the heck does “three times less than” mean?
The Theorem That Unites Different Kinds of Calculus
Robert Ghrist shares a beautiful link between exponentiation, differentiation and shift...
The Tragedy of Infinite Tic-Tac-Toe
How many X’s Can You Fit in a Plane?
Pinning Down Uncertainty
Cynthia Flores describes how Heisenberg’s famous principle has shaped her mathematical career and worldview
The Couple That Studies the Intermediate Value Theorem Together Stays Together
Mathematicians Nikita Nikolaev and Beatriz Navarro Lameda share their favorite theorem and their mathematics-themed wedding
The Voices of Black Mathematicians
Black History Month in the U.S. is a good time to celebrate these important people
Even Kids Can Understand That Algorithms Can Be Biased
Alexandria Ocasio-Cortez is right: machines can lead to racist outcomes
