1
The last IMO problem AI could not solve
1:40
2026-09-18
2
The last IMO problem AI could not solve
51:56
2026-09-18
3
The jumping pegs puzzle
0:53
2026-08-18
4
The 64 sugar cubes puzzle
0:56
2026-07-24
5
But what is cross-entropy? | Compression is Intelligence Part 2
33:51
2026-07-16
6
100 random chords, how many intersections?
1:10
2026-06-16
7
Measuring the entropy of English
2:25
2026-06-12
8
What's the perfect encoding? How do you know?
1:02
2026-06-10
9
Reinventing Entropy | Compression is Intelligence Part 1
32:20
2026-06-07
10
Tie random ends: How many loops?
1:22
2026-05-21
11
Covering 10 points, a surprisingly tricky puzzle.
0:39
2026-04-16
12
Escher's most mind-bending piece
1:43
2026-03-27
13
The subset sum puzzle
0:49
2026-03-25
14
How (and why) to take a logarithm of an image
44:52
2026-03-22
15
Bacteria Grid Puzzle Solution
3:00
2026-03-21
16
The most beautiful formula not enough people understand
1:00:24
2026-02-27
17
The lattice bacteria puzzle
1:02
2026-02-18
18
Solution to the ladybug clock puzzle
2:34
2026-02-16
19
Why you can't comb a hairy ball, and why we care
29:40
2026-01-31
20
The ladybug clock puzzle
1:01
2026-01-16
21
Why Laplace transforms are so useful
23:05
2025-11-05
22
The dynamics of e^(πi)
1:46
2025-10-12
23
But what is a Laplace Transform?
34:41
2025-10-12
24
The Physics of Euler's Formula | Laplace Transform Prelude
27:49
2025-10-05
25
What was Euclid really doing? | Guest video by Ben Syversen
33:29
2025-09-18
26
Incomplete open cubes
1:12
2025-09-07
27
Exploration & Epiphany | Guest video by Paul Dancstep
52:12
2025-09-07
28
Simulating and understanding phase change | Guest video by Vilas Winstein
41:03
2025-08-28
29
How AI connects text and images
1:43
2025-08-21
30
The AI that solved IMO Geometry Problems | Guest video by @Aleph0
13:31
2025-08-17
31
But how do AI images and videos actually work? | Guest video by Welch Labs
37:20
2025-07-25
32
Where my explanation of Grover’s algorithm failed
16:23
2025-05-04
33
But what is quantum computing? (Grover's Algorithm)
36:54
2025-04-30
34
Testing your intuition for quantum computing
1:41
2025-04-30
35
How to measure nearby galaxies
1:03
2025-04-20
36
Measuring the distance to Venus without radar
2:21
2025-04-08
37
Measuring the speed of light using Jupiter's moons
1:45
2025-04-07
38
The tragic tale of Guillaume Le Gentil
0:56
2025-03-27
39
Zooming out by powers of 10
1:38
2025-03-26
40
Why colliding blocks compute pi
26:07
2025-03-13
41
When being beautifully wrong leads to discovery
1:01
2025-02-28
42
Why the ancient Greeks rejected heliocentrism
1:46
2025-02-27
43
How to estimate the distance to the sun
1:32
2025-02-26
44
How Aristarchus deduced the distance to the moon
0:53
2025-02-25
45
Terence Tao continuing history’s cleverest cosmological measurements
25:35
2025-02-23
46
How Earth's size was computed by Eratosthenes
2:07
2025-02-12
47
Terence Tao on the cosmic distance ladder
28:33
2025-02-08
48
Measuring the earth with Terence Tao
1:22
2025-02-08
49
The topology of two-note chords
2:03
2025-01-30
50
The barber pole optical mystery
3:00
2025-01-06
51
Monge's Theorem
0:59
2024-12-29
52
Thinking through double slits
1:49
2024-12-26
53
The inscribed square problem
0:58
2024-12-24
54
This open problem taught me what topology is
27:26
2024-12-24
55
The meaning within the Mandelbrot set
1:45
2024-11-24
56
The scale of training LLMs
0:32
2024-11-20
57
Large Language Models explained briefly
7:58
2024-11-20
58
This puzzle is trickier than it seems
1:45
2024-11-19
59
Sphere surface area proof sketch
1:25
2024-11-17
60
Newton’s Fractal is beautiful
3:00
2024-11-16
61
The Triangle Of Power
2:27
2024-11-15
62
The twirling tiles puzzle
1:00
2024-11-13
63
A bizarre probability fact
2:49
2024-11-12
64
Solving problems by adding a dimension
29:42
2024-11-08
65
LLMs are next-word predictors
0:49
2024-11-04
66
How I animate 3Blue1Brown | A Manim demo with Ben Sparks
53:41
2024-10-12
67
Hologram preview
0:58
2024-10-11
68
Holograms are wild (full video linked above)
0:55
2024-10-05
69
How are holograms possible?
46:24
2024-10-05
70
How might LLMs store facts | Deep Learning Chapter 7
22:43
2024-08-31
71
In the vector space of all advice...
0:57
2024-05-22
72
What "Follow Your Dreams" Misses | Harvey Mudd Commencement Speech 2024
15:30
2024-05-18
73
Temperature in LLMs
1:00
2024-04-28
74
How word vectors encode meaning
1:00
2024-04-11
75
Attention in transformers, step-by-step | Deep Learning Chapter 6
26:10
2024-04-07
76
Transformers, the tech behind LLMs | Deep Learning Chapter 5
27:14
2024-04-01
77
Simulating the electric field and a moving charge
1:00
2024-01-26
78
A challenging puzzle about subset sums
1:00
2024-01-22
79
Ellipses have multiple definitions, how are these the same?
0:51
2024-01-19
80
Three levels of understanding Bayes' theorem
0:50
2024-01-17
81
The medical test paradox (well "paradox")
0:57
2024-01-15
82
Positioned as the hardest question on a Putnam exam (#6, 1992)
1:00
2024-01-12
83
Why does light slowing imply a bend? (Beyond the tank/car analogy)
1:00
2024-01-11
84
The cube shadow puzzle
0:59
2024-01-09
85
What does it mean that light "slows down" in glass?
1:00
2024-01-08
86
Why do we call them "scalars"?
1:00
2024-01-06
87
A beautiful international math olympiad problem
1:00
2024-01-03
88
Definition of a "bit", in information theory
1:00
2024-01-02
89
The Newton art puzzle
1:00
2023-12-29
90
What is a group?
1:00
2023-12-27
91
How to derive a formula for π
1:00
2023-12-25
92
The limit of limiting arguments
0:51
2023-12-23
93
For anyone who might not know how links in shorts work
1:00
2023-12-21
94
Infinite Lighthouses and π
1:00
2023-12-21
95
Can you even imagine 2^256?
1:00
2023-12-16
96
Order from chaos
0:50
2023-12-15
97
A short on shorts
1:00
2023-12-13
98
A pretty way to add weighted dice
1:00
2023-12-12
99
A simple image convolution
0:59
2023-12-12
100
These integrals all equal π, until...
0:51
2023-12-11
101
The split necklace puzzle (with a surprise topological solution)
1:00
2023-12-11
102
Error correction is incredible
1:00
2023-12-10
103
The chessboard and coins puzzle
1:00
2023-12-10
104
Prime spirals
0:56
2023-12-09
105
The barber pole effect
1:00
2023-12-09
106
Fourier series
1:00
2023-12-08
107
Seeing with sound
1:00
2023-12-08
108
How prisms work (full video linked above)
1:00
2023-12-07
109
I'm still astounded this is true
1:00
2023-12-07
110
Don't let it fool you!
1:00
2023-12-07
111
Answering viewer questions about refraction
13:25
2023-12-03
112
But why would light "slow down"? | Visualizing Feynman's lecture on the refractive index
28:34
2023-11-30
113
25 Math explainers you may enjoy | SoME3 results
22:12
2023-10-07
114
How wiggling charges give rise to light
21:33
2023-09-01
115
This tests your understanding of light | The barber pole effect
9:57
2023-09-01
116
A pretty reason why Gaussian + Gaussian = Gaussian
13:16
2023-07-11
117
This pattern breaks, but for a good reason | Moser's circle problem
16:13
2023-07-02
118
How They Fool Ya (live) | Math parody of Hallelujah
4:00
2023-06-28
119
Convolutions | Why X+Y in probability is a beautiful mess
27:25
2023-06-27
120
Why π is in the normal distribution (beyond integral tricks)
24:46
2023-04-02
121
But what is the Central Limit Theorem?
31:15
2023-03-14
122
But what is a convolution?
23:01
2022-11-18
123
Researchers thought this was a bug (Borwein integrals)
17:26
2022-11-04
124
What makes a great math explanation? | SoME2 results
17:01
2022-10-01
125
How to lie using visual proofs
18:49
2022-07-03
126
Olympiad level counting (Generating functions)
34:36
2022-05-23
127
Oh, wait, actually the best Wordle opener is not “crane”…
10:53
2022-02-13
128
Solving Wordle using information theory
30:38
2022-02-06
129
A tale of two problem solvers | Average cube shadow area
40:06
2021-12-20
130
2021 Summer of Math Exposition results
12:40
2021-10-23
131
Beyond the Mandelbrot set, an intro to holomorphic dynamics
27:36
2021-10-16
132
Newton’s fractal (which Newton knew nothing about)
26:06
2021-10-12
133
Make math videos! | Summer of Math Exposition announcement
24:21
2021-07-16
134
A quick trick for computing eigenvalues | Chapter 15, Essence of linear algebra
13:13
2021-05-07
135
How (and why) to raise e to the power of a matrix | DE6
27:07
2021-04-01
136
The medical test paradox, and redesigning Bayes' rule
21:14
2020-12-22
137
Hamming codes part 2: The one-line implementation
16:50
2020-09-04
138
But what are Hamming codes? The origin of error correction
20:05
2020-09-04
139
Group theory, abstraction, and the 196,883-dimensional monster
21:58
2020-08-19
140
The impossible chessboard puzzle
18:42
2020-07-05
141
Tips to be a better problem solver [Last live lecture] | Ep. 10 Lockdown live math
1:08:20
2020-05-22
142
Intuition for i to the power i | Ep. 9 Lockdown live math
1:13:38
2020-05-15
143
The DP-3T algorithm for contact tracing (with Nicky Case)
4:24
2020-05-14
144
The power tower puzzle | Ep. 8 Lockdown live math
53:50
2020-05-12
145
What makes the natural log "natural"? | Ep. 7 Lockdown live math
1:14:54
2020-05-08
146
Logarithm Fundamentals | Ep. 6 Lockdown live math
1:34:22
2020-05-05
147
Imaginary interest rates | Ep. 5 Lockdown live math
1:03:07
2020-05-01
148
What is Euler's formula actually saying? | Ep. 4 Lockdown live math
51:16
2020-04-28
149
Complex number fundamentals | Ep. 3 Lockdown live math
1:22:11
2020-04-24
150
Trigonometry fundamentals | Ep. 2 Lockdown live math
1:13:17
2020-04-21
151
The simpler quadratic formula | Ep. 1 Lockdown live math
52:11
2020-04-17
152
Lockdown math announcement
2:13
2020-04-16
153
Why “probability of 0” does not mean “impossible” | Probabilities of probabilities, part 2
10:01
2020-04-12
154
Simulating an epidemic
23:12
2020-03-27
155
Binomial distributions | Probabilities of probabilities, part 1
12:34
2020-03-15
156
Exponential growth and epidemics
8:57
2020-03-08
157
The quick proof of Bayes' theorem
3:48
2019-12-22
158
Bayes theorem, the geometry of changing beliefs
15:11
2019-12-22
159
Q&A with Grant, windy walk edition
19:06
2019-11-23
160
Why do prime numbers make these spirals? | Dirichlet’s theorem and pi approximations
22:21
2019-10-08
161
The unexpectedly hard windmill question (2011 IMO, P2)
16:03
2019-08-04
162
e^(iπ) in 3.14 minutes, using dynamics | DE5
4:08
2019-07-07
163
Pure Fourier series animation montage
12:29
2019-07-03
164
But what is a Fourier series? From heat flow to drawing with circles | DE4
24:47
2019-06-30
165
Solving the heat equation | DE3
14:13
2019-06-16
166
But what is a partial differential equation? | DE2
17:39
2019-04-21
167
Differential equations, a tourist's guide | DE1
27:16
2019-03-31
168
Cramer's rule, explained geometrically | Chapter 12, Essence of linear algebra
12:12
2019-03-17
169
How colliding blocks act like a beam of light...to compute pi.
14:41
2019-02-03
170
The most unexpected answer to a counting puzzle
5:13
2019-01-13
171
But why is a sphere's surface area four times its shadow?
15:51
2018-12-02
172
Using topology for discrete problems | The Borsuk-Ulam theorem and stolen necklaces
19:22
2018-11-18
173
Why 5/3 is a fundamental constant for turbulence
11:28
2018-11-07
174
Quaternions and 3d rotation, explained interactively
5:59
2018-10-26
175
Visualizing the 4d numbers Quaternions
31:51
2018-09-06
176
Q&A with Grant Sanderson (3blue1brown)
10:21
2018-08-24
177
Why slicing a cone gives an ellipse (beautiful proof)
12:52
2018-08-01
178
Other math channels you'd enjoy
8:09
2018-06-27
179
Divergence and curl: The language of Maxwell's equations, fluid flow, and more
15:42
2018-06-21
180
The other way to visualize derivatives | Chapter 12, Essence of calculus
14:26
2018-05-19
181
The Wallis product for pi, proved geometrically
25:27
2018-04-20
182
Winding numbers and domain coloring
23:10
2018-03-24
183
How pi was almost 6.283185...
5:53
2018-03-14
184
Why is pi here? And why is it squared? A geometric answer to the Basel problem
17:08
2018-03-02
185
The more general uncertainty principle, regarding Fourier transforms
18:07
2018-02-25
186
But what is the Fourier Transform? A visual introduction.
19:42
2018-01-26
187
Why this puzzle is impossible
19:37
2017-12-23
188
Q&A #2 + Net Neutrality Nuance
4:05
2017-12-14
189
The hardest problem on the hardest test
11:15
2017-12-08
190
Backpropagation calculus | Deep Learning Chapter 4
10:18
2017-11-03
191
Backpropagation, intuitively | Deep Learning Chapter 3
12:47
2017-11-03
192
Gradient descent, how neural networks learn | Deep Learning Chapter 2
20:33
2017-10-16
193
But what is a neural network? | Deep learning chapter 1
18:40
2017-10-05
194
Some light quantum mechanics (with minutephysics)
22:22
2017-09-13
195
Thinking outside the 10-dimensional box
25:13
2017-08-11
196
Hilbert's Curve: Is infinite math useful?
18:18
2017-07-21
197
How secure is 256 bit security?
5:06
2017-07-08
198
But how does bitcoin actually work?
25:16
2017-07-07
199
All possible pythagorean triples, visualized
14:53
2017-05-26
200
Pi hiding in prime regularities
29:43
2017-05-19
201
Taylor series | Chapter 11, Essence of calculus
22:20
2017-05-07
202
Higher order derivatives | Chapter 10, Essence of calculus
5:39
2017-05-07
203
What does area have to do with slope? | Chapter 9, Essence of calculus
12:39
2017-05-06
204
Integration and the fundamental theorem of calculus | Chapter 8, Essence of calculus
20:46
2017-05-05
205
Limits, L'Hôpital's rule, and epsilon delta definitions | Chapter 7, Essence of calculus
18:27
2017-05-04
206
Implicit differentiation, what's going on here? | Chapter 6, Essence of calculus
15:34
2017-05-03
207
What's so special about Euler's number e? | Chapter 5, Essence of calculus
13:50
2017-05-02
208
Visualizing the chain rule and product rule | Chapter 4, Essence of calculus
15:56
2017-05-01
209
Derivative formulas through geometry | Chapter 3, Essence of calculus
17:34
2017-04-30
210
The paradox of the derivative | Chapter 2, Essence of calculus
16:50
2017-04-29
211
The essence of calculus
17:05
2017-04-28
212
Euler's formula with introductory group theory
24:28
2017-03-03
213
Fractals are typically not self-similar
21:36
2017-01-27
214
Tattoos on Math
8:15
2017-01-06
215
But what is the Riemann zeta function? Visualizing analytic continuation
22:11
2016-12-09
216
Binary, Hanoi, and Sierpinski, part 2
13:40
2016-11-25
217
Binary, Hanoi and Sierpinski, part 1
13:59
2016-11-25
218
3blue1brown channel trailer
1:32
2016-11-25
219
Who cares about topology? (Old version)
16:30
2016-11-04
220
Abstract vector spaces | Chapter 16, Essence of linear algebra
16:46
2016-09-24
221
Eigenvectors and eigenvalues | Chapter 14, Essence of linear algebra
17:16
2016-09-15
222
Change of basis | Chapter 13, Essence of linear algebra
12:51
2016-09-11
223
Cross products in the light of linear transformations | Chapter 11, Essence of linear algebra
13:10
2016-09-01
224
Cross products | Chapter 10, Essence of linear algebra
8:54
2016-09-01
225
Dot products and duality | Chapter 9, Essence of linear algebra
14:12
2016-08-24
226
Nonsquare matrices as transformations between dimensions | Chapter 8, Essence of linear algebra
4:27
2016-08-16
227
Inverse matrices, column space and null space | Chapter 7, Essence of linear algebra
12:09
2016-08-15
228
The determinant | Chapter 6, Essence of linear algebra
10:03
2016-08-10
229
Three-dimensional linear transformations | Chapter 5, Essence of linear algebra
4:46
2016-08-09
230
Matrix multiplication as composition | Chapter 4, Essence of linear algebra
10:04
2016-08-08
231
Linear transformations and matrices | Chapter 3, Essence of linear algebra
10:59
2016-08-07
232
Linear combinations, span, and basis vectors | Chapter 2, Essence of linear algebra
9:59
2016-08-06
233
Vectors | Chapter 1, Essence of linear algebra
9:52
2016-08-06
234
Essence of linear algebra preview
5:09
2016-08-05
235
Triangle of Power
7:42
2016-06-26
236
The Brachistochrone, with Steven Strogatz
16:02
2016-04-01
237
Snell's law proof using springs
3:57
2016-04-01
238
Fractal charm: Space filling curves
2:34
2016-01-17
239
Music And Measure Theory
13:13
2015-10-04
240
How to count to 1000 on two hands
2:34
2015-09-18
241
What does it feel like to invent math?
15:08
2015-08-14
242
Euler's Formula and Graph Duality
7:27
2015-06-21
243
Euler's Formula Poem
1:04
2015-03-05
244
e to the pi i, a nontraditional take (old version)
6:14
2015-03-05
