The math of backpropagation, the algorithm by which neural networks learn.

What is the second derivative? Third derivative? How do you think about these?

When a piece of cryptography is described as having "256-bit security", what exactly does that mean? Just how big is the number 2^256?

Explore the Hardy-Weinberg Equilibrium equations with The Amoeba Sisters! Learn why this equation can be useful, its five assumptions, and how to calculate genotype and allele frequencies with p and q values! This video does assume the...

You and your best friend Bill are the greatest bards in the kingdom— but maybe not the brightest. Your hit song has insulted the king and now you're slated for execution. Luckily, Death is a connoisseur of most excellent music and has...

According to legend, three galactic terraformers shaped your planet into a paradise. When their work was done, they left the source of their power behind: three golden hexagons, hidden in dungeons full of traps and monsters. If one...

Logarithms are confusing, but perhaps some alternate notation could make them more intuitive.

Is math real or simply something made up by mathematicians? You can't physically touch a number yet using numbers we're able to build skyscrapers and launch rockets into space. Mathematician Kelsey Houston-Edwards explains this...

Parkinson's disease affects 6.3 million people worldwide, causing weakness and tremors, but there's no objective way to detect it early on. Yet. Applied mathematician and TED Fellow Max Little is testing a simple, cheap tool that in...

Jedidah Isler first fell in love with the night sky as a little girl. Now she's an astrophysicist who studies supermassive hyperactive black holes. In a charming talk, she takes us trillions of kilometers from Earth to introduce us to...

Finding the right mate is no cakewalk -- but is it even mathematically likely? In a charming talk, mathematician Hannah Fry shows patterns in how we look for love, and gives her top three tips (verified by math!) for finding that special...

It may produce creepy images with way too many dogs and eyeballs, but Google’s DeepDream program is actually a valuable window into artificial intelligence.

'I am a mathematician, and I would like to stand on your roof.' That is how Ron Eglash greeted many African families he met while researching the fractal patterns he'd noticed in villages across the continent.

What is the dot product? What does it represent? Why does it have the formula that it does? All this is explained visually.

What can we expect our kids to learn if they're hungry or eating diets full of sugar and empty of nutrients? Former White House Chef and food policymaker Sam Kass discusses the role schools can play in nourishing students' bodies in...

How do we make sense of a world that doesn't? By looking in unexpected places, says mathematician Eugenia Cheng. She explains how applying concepts from abstract mathematics to daily life can lead us to a deeper understanding of things...

With up to ten years in prison at stake, will Wanda rat Fred out? Game theory is looking at human interactions through the lens of mathematics.

Why is 'x' the symbol for an unknown? In this short and funny talk, Terry Moore gives the surprising answer.

Q&A #2 + Net Neutrality Nuance

Someone always asks the math teacher, "Am I going to use calculus in real life?" And for most of us, says Arthur Benjamin, the answer is no. He offers a bold proposal on how to make math education relevant in the digital age.

Moser's circle problem, and its solution.

Mathematician Kelsey Houston-Edwards explains exactly what singularities are and how they exist right under our noses.

It's your first day as Center Realm's official cartographer, and you've already got a big problem. Center Realm is home to three elder dragons: two ice, one fire, and they've lived in harmony for centuries. But scouts have sighted three...

What is the second derivative? Third derivative? How do you think about these?