My Favorite Theorem

50 episodes listed below

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Favorite theorems, no quiz attached.

The gist

My Favorite Theorem is a conversational math show built around a guest’s chosen theorem and the pleasures that sit beside it. Evelyn Lamb and Kevin Knudson keep the room informal, moving from calculus, graph theory, knots, and geometry into food, music, biking, and weather.

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About My Favorite Theorem

My Favorite Theorem is a math conversation show with an unusually gentle premise: a guest names a theorem, explains its pull, and pairs it with some delight from outside the formal proof. The result is not a lecture hall. It is a table conversation where abstraction can sit beside food, music, biking, weather, and ordinary digressions. Evelyn Lamb and Kevin Knudson give the show its shape, often opening with personal check-ins before turning toward the guest’s mathematical choice. The excerpts show a broad range. The fundamental theorem of calculus is explained through a mountain hike and changing elevation. The Rado graph brings in random processes, isomorphism, and first-order graph statements. The Poincaré-Hopf theorem prompts a loose, generous discussion of what “favorite” even means. Binary quadratic forms and ideal classes appear through the surprise of structure becoming natural after a change in viewpoint. The isoperimetric theorem leads from children playing with string to circles, constant-width shapes, and coin geometry. Knot theory enters through reducible crossings, region crossing changes, and unknotting. The show is comfortable with technical vocabulary. It is also comfortable with hesitation. A host can ask for something to be repeated, admit to being only provisionally comfortable with an idea, or follow a side path before returning to the theorem. That makes the math feel worked through in real time rather than polished into false simplicity. The guest list in its episodes includes Kyne Santos, Jeremy Alm, Robin Wilson, Kate Stange, Karen Saxe, Allison Henrich, Lily Khadjavi, and Yoon Ha Lee, with conversations that range from pure mathematical structures to the human reasons a theorem stays memorable. The show’s charm comes from that combination: serious results, low-pressure pacing, and a format that asks mathematics to share space with taste, memory, and personality.

Made for: Suits a listener who enjoys mathematical ideas explained through conversation, analogy, and visible curiosity. It especially fits people who like advanced topics without a classroom tone.

What sets it apart: The show pairs each chosen theorem with something from ordinary life, so the math is framed by taste and personality as much as by proof. Its best moments keep the difficulty in view while making room for pauses, jokes, and re-explanations.

In their own words

Join us as we spend each episode talking with a mathematical professional about their favorite result. And since the best things in life come in pairs, find out what our guest thinks pairs best with their theorem.

Why you'd press play

A mountain hike turns into calculus just as you start rooting for the downhill.

Press play if you want

  • an elevation problem to make the fundamental theorem of calculus click
  • to hear Evelyn Lamb and Kevin Knudson ask for another explanation when an infinite graph gets weird
Read the full recommendation in PlayNext →
favorite theoremscalculus and rates of changegraph theorytopology and geometryquadratic forms and idealsknot theory and unknottingmathematical pairingsinformal math conversation

Talks about

Best episodes of My Favorite Theorem

Short reviews from the PlayNext desk, based on the episodes we processed.

Episode 95 - Kyne SantosMay 21, 2025

A mountain hike turns the fundamental theorem of calculus into a clear route from small changes to total change.

Calculus turns unusually concrete here, with a mountain hike serving as the map for the fundamental theorem of calculus. A six-hour climb gives the idea a physical route: track each rise and dip along the way, or compare the starting and ending elevations, and both views arrive…

Episode 94 - Jeremy AlmFeb 6, 2025

A random graph becomes a clear, lively route into logic, isomorphism, and the value of one more question.

The episode turns to the roto graph, a countably infinite graph that can emerge almost surely from a random process where each pair of distinct vertices is connected with probability one half.

Episode 93 - Robin WilsonDec 2, 2024

A favorite theorem gets memory, hot fudge flow, and a little room to be rated.

My Favorite Theorem turns the Poincare-Hopf theorem into a relaxed look at how a result can become meaningful at a particular point in a mathematician's life.

Episode 92 - Kate StangeJun 10, 2024

A multiplication-like pattern in quadratic forms becomes clearer through ideals and a shift in viewpoint.

Kate Stang's conversation on binary quadratic forms opens with a quiet hook: a multiplication-like pattern shows up in objects where multiplication is not the obvious operation.

Episode 91 - Karen SaxeApr 3, 2024

A child-friendly circle experiment opens into constant-width shapes and the geometry behind British coins.

A conversation about circles, fixed perimeters, and shapes of constant width starts with a classroom-ready experiment: hand children some string, ask for the largest closed shape they can make, and the circle naturally takes over.

Podcasts like My Favorite Theorem

Episodes

  1. 1

    Episode 95 - Kyne Santos

    Hidden gem

    My Favorite Theorem episode 95 features Kine Santos, a drag queen from Kitchener, Ontario, who says the fundamental theorem of calculus is best understood through a six-hour hike up Acatenango volcano in Guatemala.

    May 21, 2025·36m·2 clips
  2. 2

    Episode 94 - Jeremy Alm

    Hidden gem

    My Favorite Theorem centers on Jeremy Alm's choice of the Rado graph, a countably infinite random graph that sits between combinatorics and logic.

    Feb 6, 2025·41m·3 clips
  3. 3

    Episode 93 - Robin Wilson

    Hidden gem

    Robin Wilson explains the Poincaré Hopf Index Theorem through a surface, a smooth vector field, and Euler characteristic.

    Dec 2, 2024·22m·1 clip
  4. 4

    Episode 92 - Kate Stange

    Hidden gem

    My Favorite Theorem centers on Kate Stange's bijection between quadratic forms and ideal classes, introduced as her favorite theorem for the day.

    Jun 10, 2024·30m·2 clips
  5. 5

    Episode 91 - Karen Saxe

    Hidden gem

    My Favorite Theorem episode 91 with Karen Sachs centers on the isoperimetric inequality on Pi Day during Women's History Month.

    Apr 3, 2024·34m·2 clips
  6. 6

    Episode 90 - Corrine Yap

    Jan 23, 2024·34m
  7. 7

    Episode 89 - Allison Henrich

    Hosts Kevin Knutson and Evelyn Lamb introduce the podcast and chat about Evelyn's upcoming 40th birthday and Janelle Monae concert before discussing a mathematical theorem.

    Nov 12, 2023·35m·2 clips
  8. 8

    Episode 88 - Tom Edgar

    Oct 9, 2023·26m
  9. 9

    Episode 87 - Tatiana Toro

    Sep 7, 2023·24m
  10. 10

    Episode 86 - Sarah Hart

    Jul 20, 2023·41m
  11. 11

    Episode 85 - Matthew Kahle

    Jun 2, 2023·31m
  12. 12

    Episode 84 - The Students of TCU

    May 2, 2023·50m
  13. 13

    Episode 83 - Cihan Bahran

    Feb 16, 2023·27m
  14. 14

    Episode 82 - Juliette Bruce

    Dec 30, 2022·29m
  15. 15

    Episode 81 - Christopher Danielson

    Nov 26, 2022·33m
  16. 16

    Episode 80 - Kimberly Ayers

    Oct 21, 2022·34m
  17. 17

    Episode 79 - Philip Ording

    Sep 15, 2022·35m
  18. 18

    Episode 78 - Daina Taimina

    Aug 11, 2022·28m
  19. 19

    Episode 77 - Tien Chih

    Jul 13, 2022·26m
  20. 20

    Episode 76 - Math Students of CSULA

    Jun 9, 2022·59m
  21. 21

    Episode 75 - Dave Kung

    Mar 17, 2022·31m
  22. 22

    Episode 74 - Priyam Patel

    Feb 11, 2022·43m
  23. 23

    Episode 73 - Courtney Gibbons

    Jan 13, 2022·42m
  24. 24

    Episode 72 - Kameryn Williams

    Dec 10, 2021·23m
  25. 25

    Episode 71 - Emily Howard

    Nov 11, 2021·40m
  26. 26

    Episode 70 - Joel David Hamkins

    Sep 22, 2021·40m
  27. 27

    Episode 69 - Ranthony Edmonds

    Aug 14, 2021·36m
  28. 28

    Episode 68 - Rekha Thomas

    Jul 8, 2021·27m
  29. 29

    Episode 67 - Liz Munch

    Jun 10, 2021·33m
  30. 30

    Episode 66 - Érika Roldán

    May 15, 2021·37m
  31. 31

    Episode 65 - Howard Masur

    Apr 8, 2021·29m
  32. 32

    Episode 64 - Pamela Harris and Aris Winger

    Mar 11, 2021·49m
  33. 33

    Episode 63 - Lily Khadjavi

    Hosts Evelyn Lam and Kevin Knutson introduce the podcast and share personal holiday stories before diving into mathematical discussions.

    Feb 11, 2021·51m
  34. 34

    Episode 62 - Tai-Danae Bradley

    Jan 15, 2021·32m
  35. 35

    Episode 61 - Yoon Ha Lee

    Hosts Evelyn Lam and Kevin Knudson interview science fiction writer Yoon Ha Lee about his favorite mathematical theorem and his background in math.

    Dec 10, 2020·22m
  36. 36

    Episode 60 - Michael Barany

    Nov 12, 2020·41m
  37. 37

    Episode 59 - Daniel Litt

    Oct 8, 2020·27m
  38. 38

    Episode 58 - Susan D'Agostino

    Sep 10, 2020·25m
  39. 39

    Episode 57 - Annalisa Crannell

    Aug 13, 2020·33m
  40. 40

    Episode 56 - Belin Tsinnajinnie

    A podcast where mathematicians discuss their favorite theorems, with this episode featuring a live taping announcement and a conversation about Desargues' theorem.

    Jul 9, 2020·35m
  41. 41

    Episode 55 - Rebecca Garcia

    Jun 11, 2020·25m
  42. 42

    Episode 54 - Steve Strogatz

    May 14, 2020·33m
  43. 43

    Episode 53 - Ruthi Hortsch

    Apr 9, 2020·29m
  44. 44

    Episode 52 - Ben Orlin

    Mar 12, 2020·27m
  45. 45

    Episode 51 - Carina Curto

    Feb 13, 2020·29m
  46. 46

    Episode 50 - aBa

    Jan 9, 2020·35m
  47. 47

    Episode 49 - Edmund Harriss

    Mathematician Edmund Harris discusses his favorite theorem and the art of illustrating mathematics.

    Dec 12, 2019·31m
  48. 48

    Episode 48 - Sophie Carr

    Hosts Kevin Knudson and Evelyn Lam introduce the podcast and discuss an upcoming math calendar project and a geometry/topology workshop.

    Nov 14, 2019·23m
  49. 49

    Episode 47 - Judy Walker

    Hosts Kevin Knudsen and Evelyn Lam interview mathematician Judy Walker about her favorite theorem and pairings.

    Oct 10, 2019·32m
  50. 50

    Episode 46 - Adriana Salerno

    Hosts Evelyn Lam and Kevin Knutson introduce the podcast and chat about gardening and birdwatching before discussing a mathematician's favorite theorem.

    Sep 12, 2019·31m