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#183 – Po-Shen Loh: Mathematics, Math Olympiad, Combinatorics & Contact Tracing

Lex Fridman Podcast

Conversations about science, technology, history, philosophy and the nature of intelligence, consciousness, love, and power. Lex is an AI researcher at MIT and beyond.

Po-Shen Loh is a mathematician at CMU and coach of the USA International Math Olympiad team. Please support this podcast by checking out our sponsors:
- The Jordan Harbinger Show: https://jordanharbinger.com/lex/
- Onnit: https://lexfridman.com/onnit
- BetterHelp: https://betterhelp.com/lex to get 10% off
- Eight Sleep: https://www.eightsleep.com/lex and use code LEX to get special savings
- LMNT: https://drinkLMNT.com/lex to get free sample pack

EPISODE LINKS:
Po's Twitter: https://twitter.com/poshenloh
Po's Website: https://www.poshenloh.com/
Daily Challenges: https://daily.poshenloh.com/
NOVID: https://www.novid.org/

PODCAST INFO:
Podcast website: https://lexfridman.com/podcast
Apple Podcasts: https://apple.co/2lwqZIr
Spotify: https://spoti.fi/2nEwCF8
RSS: https://lexfridman.com/feed/podcast/
YouTube Full Episodes: https://youtube.com/lexfridman
YouTube Clips: https://youtube.com/lexclips

SUPPORT & CONNECT:
- Check out the sponsors above, it's the best way to support this podcast
- Support on Patreon: https://www.patreon.com/lexfridman
- Twitter: https://twitter.com/lexfridman
- Instagram: https://www.instagram.com/lexfridman
- LinkedIn: https://www.linkedin.com/in/lexfridman
- Facebook: https://www.facebook.com/lexfridman
- Medium: https://medium.com/@lexfridman

OUTLINE:
Here's the timestamps for the episode. On some podcast players you should be able to click the timestamp to jump to that time.
(00:00) - Introduction
(08:51) - Planes and bridges
(12:28) - Writing a computer game from scratch
(14:54) - Programming competitions
(18:28) - Math is hard
(23:59) - Contact tracing that preserves privacy
(1:01:16) - Math Olympiad
(1:16:57) - Hard math problem
(1:24:14) - Is math discovered or invented?
(1:29:09) - Intelligence
(1:35:59) - Math education
(1:40:10) - How to learn math
(1:49:06) - Combinatorics
(1:52:13) - Voting trees
(2:02:36) - Stochastic coalescence
(2:12:23) - P=NP
(2:16:39) - Tolkien and WWII
(2:19:00) - Advice for young people
(2:21:05) - Meaning of life

Po-Shen Loh is a mathematician at CMU and coach of the USA International Math Olympiad team. Please support this podcast by checking out our sponsors: 
– The Jordan Harbinger Show: <a href="https://jordanharbinger.com/lex/">https://jordanharbinger.com/lex/</a> 
– Onnit: <a href="https://lexfridman.com/onnit">https://lexfridman.com/onnit</a> 
– BetterHelp: <a href="https://betterhelp.com/lex">https://betterhelp.com/lex</a> to get 10% off 
– Eight Sleep: <a href="https://www.eightsleep.com/lex">https://www.eightsleep.com/lex</a> and use code LEX to get special savings 
– LMNT: <a href="https://drinkLMNT.com/lex">https://drinkLMNT.com/lex</a> to get free sample pack
EPISODE LINKS: 
Po’s Twitter: <a href="https://twitter.com/poshenloh">https://twitter.com/poshenloh</a> 
Po’s Website: <a href="https://www.poshenloh.com/">https://www.poshenloh.com/</a> 
Daily Challenges: <a href="https://daily.poshenloh.com/">https://daily.poshenloh.com/</a> 
NOVID: <a href="https://www.novid.org/">https://www.novid.org/</a>
PODCAST INFO: 
Podcast website: <a href="https://lexfridman.com/podcast">https://lexfridman.com/podcast</a> 
Apple Podcasts: <a href="https://apple.co/2lwqZIr">https://apple.co/2lwqZIr</a> 
Spotify: <a href="https://spoti.fi/2nEwCF8">https://spoti.fi/2nEwCF8</a> 
RSS: <a href="https://lexfridman.com/feed/podcast/">https://lexfridman.com/feed/podcast/</a> 
YouTube Full Episodes: <a href="https://youtube.com/lexfridman">https://youtube.com/lexfridman</a> 
YouTube Clips: <a href="https://youtube.com/lexclips">https://youtube.com/lexclips</a>
SUPPORT & CONNECT: 
– Check out the sponsors above, it’s the best way to support this podcast 
– Support on Patreon: <a href="https://www.patreon.com/lexfridman">https://www.patreon.com/lexfridman</a> 
– Twitter: <a href="https://twitter.com/lexfridman">https://twitter.com/lexfridman</a> 
– Instagram: <a href="https://www.instagram.com/lexfridman">https://www.instagram.com/lexfridman</a> 
– LinkedIn: <a href="https://www.linkedin.com/in/lexfridman">https://www.linkedin.com/in/lexfridman</a> 
– Facebook: <a href="https://www.facebook.com/lexfridman">https://www.facebook.com/lexfridman</a> 
– Medium: <a href="https://medium.com/@lexfridman">https://medium.com/@lexfridman</a>
OUTLINE: 
Here’s the timestamps for the episode. On some podcast players you should be able to click the timestamp to jump to that time. 
(00:00) – Introduction 
(08:51) – Planes and bridges 
(12:28) – Writing a computer game from scratch 
(14:54) – Programming competitions 
(18:28) – Math is hard 
(23:59) – Contact tracing that preserves privacy 
(1:01:16) – Math Olympiad 
(1:16:57) – Hard math problem 
(1:24:14) – Is math discovered or invented? 
(1:29:09) – Intelligence 
(1:35:59) – Math education 
(1:40:10) – How to learn math 
(1:49:06) – Combinatorics 
(1:52:13) – Voting trees 
(2:02:36) – Stochastic coalescence 
(2:12:23) – P=NP 
(2:16:39) – Tolkien and WWII 
(2:19:00) – Advice for young people 
(2:21:05) – Meaning of life

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#183 – Po-Shen Loh: Mathematics, Math Olympiad, Combinatorics & Contact Tracing

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