You can prove every possible graph is just a sub-graph.

From Standup Mathematician. Jane Street’s Hong Kong internship is accepting applications now: https://jane-st.co/hkginternship26-SUM As well as calculating Pi on the Moon, I’ll be back on tour again in the new year: https://standupmaths.com/shows Huge thanks to my Patreon supporters. My appreciation for them is uncountably infinite. https://www.patreon.com/standupmaths CORRECTIONS None yet, let me know if you spot…

100000001 is divisible by 17 – Numberphile

From Numberphile. Featuring Matt Parker. Learn for free on Brilliant (and get 20% off a premium subscription) at https://brilliant.org/numberphile (episode sponsor). Extended footnote and other links in full description below ↓↓↓ Extra clips and outtakes from this video on our Patreon – https://www.patreon.com/posts/145064106 Matt Parker books – https://mathsgear.co.uk/collections/books And Matt’s books on Amazon – https://amzn.to/4rK4j3C…

3 Circles, 1 Rope – How Long Is It?

From Math Queen. In this math video I (Susanne) explain how to solve a beautiful geometry puzzle: three equal circles touch each other, and we want the length of the rope wrapped around them. By constructing an equilateral triangle between the centers, using angles, and breaking the shape into simple rectangles and arcs, we discover…

Closer Look at the Birthday Paradox – Numberphile

From Numberphile. Featuring Tom Crawford (happy birthday!) – More links & stuff in full description below ↓↓↓ Extra footage from this video and interview – https://youtu.be/4rdLQso6_8U See our original video from 2012 – https://www.youtube.com/watch?v=a2ey9a70yY0 Tom Crawford playlist on Numberphile – https://www.youtube.com/playlist?list=PLt5AfwLFPxWJ2TNTA79reKQ6S88kTvDR- Tom Crawford website – https://tomrocksmaths.com/ Tom’s YouTube channel – https://www.youtube.com/tomrocksmaths Patreon: http://www.patreon.com/numberphile Numberphile is…

Can any shape fit through its own silhouette?

From Standup Mathematician. Print out your Nopert with the Bambu Lab X1C Combo https://www.awin1.com/cread.php?awinmid=46345&awinaffid=2412541 #bambulab #bambulabA1 #makerworld #bambustudio #bambulabp1s #bambulabX1c #bambulabs Check out Tom 7’s video which this video goes through: https://www.youtube.com/watch?v=QH4MviUE0_s Here’s the paper announcing the Noperthedron: https://arxiv.org/pdf/2508.18475 My 2014 where I write about Prince Rupert’s Cube: "Things To Make And Do In The…

Polyominoes on Chessboards – Numberphile

From Numberphile. Sophie is back with more Polyominoes. Check our Jane Street internships in Hong Kong and elsewhere – https://jane-st.co/hkginternship26-numberphile More links & stuff in full description below ↓↓↓ Previous Polyominoes with Sophie Pentominoes: https://youtu.be/ONdgXYEBihA Snakey: https://youtu.be/ouTE-GYGIA8 Sophie Playlist: https://www.youtube.com/playlist?list=PLt5AfwLFPxWJL8jqE19RlDCMJp7psCA6r Sophie Maclean is based at Kings College, London: https://sophiethemathmo.wordpress.com Patreon: http://www.patreon.com/numberphile Numberphile is supported by…

The Graph Reconstruction Conjecture – Numberphile

From Numberphile. Elise Raphael takes us on a journey through graph reconstruction. Extras from this interview – https://youtu.be/6AqA2nIHtxg More links & stuff in full description below ↓↓↓ Elise Raphael – https://www.unige.ch/math/la-section/enseignants-et-chercheurs/elise-raphael More graph videos… Subcubic graph numbers – https://youtu.be/4-eXjTH6Mq4 Book embedding – https://youtu.be/qw2Pl_Nk3CA Graph breakthrough – https://youtu.be/Tnu_Ws7Llo4 Planar graphs – https://youtu.be/xBkTIp6ajAg Hadwiger-Nelson problem – https://youtu.be/niaeV_NHh-o…

Find The Number! – Fractions On The Number Line

From Math Queen. What fraction is shown on the number line? In this math video I (Susanne) explain how to find fractions on a number line. We go through three examples where a point is already marked on the number line and we figure out which fraction it represents. Perfect for quick practice and sharpening…

This random noise won an academy award

From Standup Mathematician. Check out Seb’s excellent deep-dive video over here: https://www.youtube.com/watch?v=FgTo5WRluy0 See my show in London on 1 December 2025: https://lwtheatres.co.uk/whats-on/matt-parker/ Other show details for the 2026 tour here: https://standupmaths.com/shows/ Yes, sign up to Patreon by the end of November 2025 to get your unique, random christmas card from me: http://patreon.com/standupmaths Or have been…

The Semicircle in a Triangle – A Geometry Puzzle

From Math Queen. In this math video I (Susanne) explain how to find the area of the semicircle. We solve this geometry puzzle by comparing the areas of the triangles and the square. Mathematics explained. 00:00 Intro – Geometry Puzzle 0:33 Area Semicircle 4:25 Area Triangle 7:43 Solving the equation 10:47 See you later! *My…

Return of the Calculator Unboxing – Numberphile

From Numberphile. Previous Unboxings here – https://www.youtube.com/playlist?list=PLt5AfwLFPxWKAINNfxIdYmFVKuk_F_cQq Featuring Matt Parker – Matt’s on tour (shows coming up in the UK) – https://standupmaths.com/shows/ – More links & stuff in full description below ↓↓↓ South Surrey and Associated Regions Calculator Appreciation Society for Professionals and Amateurs – https://www.ssaarcasfpaa.com/ More Matt Parker on Numberphile – https://www.youtube.com/playlist?list=PLt5AfwLFPxWKuRpivZd_ivR2EvEzKrDUu Matt’s own…

Can YOU Solve This Cambridge Admissions Question?

From Math Queen. In this math video I (Susanne) explain how to solve a challenging exponential equation using a clean substitution method. If you’re preparing for Cambridge, Oxbridge interviews, STEP, MAT, ENGAA, or university entrance exams, this is perfect practice. Mathematics explained. 00:00 Intro – Cambridge Test Question 0:30 Simplifying Powers 7:10 Substitution 8:55 Quadratic…

How many holes does this mug have?

From Standup Mathematician. Get your own Mug with a Hole: https://mathsgear.co.uk/products/extreme-utilities-puzzle-mug Thanks to Past James Grime for making the original video with Past Matt. https://www.youtube.com/singingbanana Huge thanks to Eugénie von Tunzelmann for her visually digestible transformation of a mug with three holes: https://www.eugenievt.com/ And to Morgan and West for their gastronomically digestible transformation of a…

How fast are YOU? – Calculating Fractions

From Math Queen. In this math video I (Susanne) explain how to simplify the powers with negative exponents and how to calculate the fraction. We subtract, add and divide fractions. Mathematics explained. 00:00 Intro – Calculating fractions 0:57 Negative Exponents 2:40 Calculating fractions 6:52 See you later! *My German Math Channel:* ​⁠ @MathemaTrick *Find me…

Can YOU solve this? – Geometry Puzzle

From Math Queen. In this math video I (Susanne) explain how to find the area of the trapezoid and how to solve this geometry puzzle. We use the equation of a line to find the values for the basis of the trapezoid. Mathematics explained. 00:00 Intro – Math Puzzle 0:25 Area Trapezoid 2:28 Equation of…

The Forgotten Story of Indian Calculus – Numberphile

From Numberphile. This video features Swagat Saurav Mishr discussing the research of Professor P.P.Divakaran, and the very early history of calculus in India. More links & stuff in full description below ↓↓↓ Swagat Saurav Mishr: https://swagatam18.wordpress.com/ Newton v Leibniz on Objectivity: https://www.youtube.com/watch?v=LN–erHStqA Some Calculus on Numberphile: https://www.numberphile.com/videos/category/Calculus Swagat talking Gravitational Waves on Sixty Symbols: https://www.youtube.com/watch?v=S85D-rdTyCw…

9th Grade Problem – Simplifying Square Roots

From Math Queen. In this math video I (Susanne) explain how to we solve a 9th-grade math problem inspired by Leonardo of Pisa (Fibonacci). You’ll learn how to simplify a fraction that contains square roots and express it as a difference of square roots — step by step. Perfect for students learning how to simplify…

How many can YOU solve? – Math Puzzle

From Math Queen. In this math video I (Susanne) explain how to solve this Genius Clock. We solve basic maths problems, but also evaluate product and sum symbols, calculate determinants and binomial coefficients using the factorial. A fun game to play for math lovers! Mathematics explained. 00:00 Intro – The Genius Clock 0:24 Problem 1…