Tag Archives: math

Babai’s Updated Results–Graph Isomophism Still Solved in Quasipolynomial Time

Many days overdue on this post but I felt obligated to post this for posterity’s sake (even at woefully so late a time) because the previous post on my blog no longer holds. Laszlo Babai has (since 9 days ago…) … Continue reading

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Babai’s Result: Still a Breakthrough — Gödel’s Lost Letter and P=NP

Even after today’s retraction of quasi-polynomial time for graph isomorphism László Babai is famous for many things, and has made many seminal contributions to complexity theory. Last year he claimed that Graph Isomorphism (GI) is in quasi-polynomial time. Today Laci … Continue reading

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Paper and Puzzle a Day 8

Again, I’ve been slightly lax on posting a puzzle and paper a day. Here I am picking up the slack once again. First, a paper. I’ve been reading up on cache-oblivious algorithms recently. Cache-oblivious algorithms are optimal algorithms that do … Continue reading

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Paper and Puzzle a Day 7

I’ve been reading up more about hinged dissections and came across a shorter paper than the one I mentioned in my previous post. This paper proves that hinged dissections are PSPACE-hard using a reduction from NCL with some neat gadgets. … Continue reading

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Paper and Puzzle a Day 5

Today marks another paper and another puzzle so let’s get started. Fractional Cascading is a pretty awesome idea for speeding up searches for the same value in multiple sorted lists. Given lists, a naive algorithm would take time because it … Continue reading

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Paper and Puzzle a Day 4

Still a pretty early morning post considering the time I got up… First, the paper: Recently came across the following paper, “Pessimal Algorithms and Simplexity Analysis.” This is the first couple of sentences in the paper, and I have to … Continue reading

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Paper and Puzzle a Day 3

Early post to an early morning of paper reading. First, the paper: I’ve been reading into the following paper for the past week or so: Parallel Graph Decompositions Using Random Shifts. One of the cool ideas from the paper is … Continue reading

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