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- To Cheer you up in difficult times 30: Irit Dinur, Shai Evra, Ron Livne, Alex Lubotzky, and Shahar Mozes Constructed Locally Testable Codes with Constant Rate, Distance, and Locality
- To cheer you up in difficult times 29: Free will, predictability and quantum computers
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- Let me tell you about three of my recent papers
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- To cheer you up in difficult times 27: A major recent “Lean” proof verification

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- To Cheer You Up in Difficult Times 31: Federico Ardila's Four Axioms for Cultivating Diversity
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- Updates and plans III.
- An interview with Noga Alon
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# Tag Archives: Xavier Dahan

## Octonions to the Rescue

Xavier Dahan and Jean-Pierre Tillich’s Octonion-based Ramanujan Graphs with High Girth. Update (February 2012): Non associative computations can be trickier than we expect. Unfortunately, the paper by Dahan and Tillich turned out to be incorrect. Update: There is more to … Continue reading