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Tony Hoare has died
Turing Award winner and former Oxford professor Tony Hoare passed away last Thursday at the age of 92. Hoare is famous for quicksort, ALGO...
Computational Complexity
Computational Complexity and other fun stuff in math and computer science from Lance Fortnow and Bill Gasarch
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Visit blog.computationalcomplexity.org → RSS feedOn Hacker News Nov 2009 – Mar 2026
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How did people deal with punch cards?
In the fall of 1976 I started as a Freshman at SUNY Stony Brook intending to major in Math and Computer Science. I took Honors Calculus I a...
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You need much less memory than time
Just as I was complaining that we haven't seen many surprising breakthroughs in complexity recently, we get an earthquake of a result to st...
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The 17x17 problem solved
THE 17x17 PROBLEM HAS BEEN SOLVED!!!!! On Nov 30, 2009 I posted here the following challenge: If someone emails me a 4-coloring of...
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Proving P!=NP: "...Ryan has taken the first real baby step in decades."
On October 8th, when in my graduate complexity course as we discussed the 1987 Razborov-Smolensky result that one can't compute the Mod p b...
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The 17x17 challenge. "Worth $289.00. This is not a joke."
The 17x17 challenge: worth $289.00. I am not kidding. Definition: The n x m grid is c-colorable if there is a way to c-color the vertic...