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 Mathematical news to cheer you up
 To Cheer You Up in Difficult Times 28: Math On the Beach (Alef’s Corner)
 To cheer you up in difficult times 27: A major recent “Lean” proof verification
 To cheer you up in difficult times 26: Two reallife lectures yesterday at the Technion
 To Cheer You Up in Difficult times 24: Borodin’s colouring conjecture!
 To cheer you up in difficult times 25: some mathematical news! (Part 2)
 To cheer you up in difficult times 23: the original handwritten slides of Terry Tao’s 2015 Einstein Lecture in Jerusalem
 Alef Corner: ICM2022
 The probabilistic proof that 2^400593 is a prime: a revolutionary new type of mathematical proof, or not a proof at all?
Top Posts & Pages
 Mathematical news to cheer you up
 A sensation in the morning news  Yaroslav Shitov: Counterexamples to Hedetniemi's conjecture.
 The Argument Against Quantum Computers  A Very Short Introduction
 To cheer you up in difficult times 27: A major recent "Lean" proof verification
 Zur Luria on the nQueens Problem
 To Cheer You Up in Difficult Times 28: Math On the Beach (Alef's Corner)
 The Quantum FaultTolerance Debate Updates
 Around Borsuk’s Conjecture 3: How to Save Borsuk's conjecture
 To cheer you up in difficult times 5: A New Elementary Proof of the Prime Number Theorem by Florian K. Richter
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Monthly Archives: September 2017
Some Mathematical Puzzles that I encountered during my career
Recently, I gave some lectures based on a generalaudience personal tour across four (plus one) mathematical puzzles that I encountered during my career. Here is a paper based on these lectures which is meant for a very wide audience (in … Continue reading
Friendship and Sesame, Maryam and Marina, Israel and Iran
Happy new (Jewish) year everybody. Amazing scientific partnership between Jordan, Cyprus, Egypt, Iran, Israel, Pakistan, the Palestinian Authority, and Turkey SESAME (Synchrotronlight for Experimental Science and Applications in the Middle East) is a “thirdgeneration” synchrotron light source that was officially opened in Allan (Jordan) on 16 May 2017. … Continue reading
Posted in Obituary, Updates, Women in science
Tagged Eliezer Rabinovici, IsraelIran relationship, Marina Ratner, Maryam Mirzakhani, Sesame
2 Comments
Elchanan Mossel’s Amazing Dice Paradox (your answers to TYI 30)
TYI 30 asked Elchanan Mossel’s Amazing Dice Paradox (that I heard from Yuval Peres yesterday) You throw a die until you get 6. What is the expected number of throws (including the throw giving 6) conditioned on the event that all throws … Continue reading
Posted in Combinatorics, Probability, Test your intuition
Tagged condition probability, Elchanan Mossel
73 Comments
TYI 30: Expected number of Dice throws
Test your intuition: You throw a dice until you get 6. What is the expected number of throws (including the throw giving 6) conditioned on the event that all throws gave even numbers. followup post
Posted in Combinatorics, Probability, Test your intuition
Tagged Elchanan Mossel, Test your intuition
43 Comments
Test your intuition 29: Diameter of various random trees
Both trees in general and random trees in particular are wonderful objects. And there is nothing more appropriate to celebrate Russ Lyons great birthday conference “Elegance in Probability” (taking place now in Tel Aviv) than to test your intuition, dear … Continue reading
Posted in Combinatorics, Probability, Test your intuition
Tagged Russ Lyons, Test your intuition
19 Comments