Computational Complexity

Computational Complexity and other fun stuff in math and computer science from Lance Fortnow and Bill Gasarch

Thursday, July 29, 2010

What is the complexity of these problems and metaproblems?

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The following problem is from Doctor Eco's Cyberpuzzles . I have shortened and generalized it. We are going to put numbers into boxes....
9 comments:
Tuesday, July 27, 2010

This Post is Quite Different from any you've ever read!!

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I recently a letter from WETA (public TV) which I quote from: This letter is quite different from any we've ever sent to you. For ye...
21 comments:
Monday, July 26, 2010

A Seventh Mil. Problem

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Richard Lipton had a wonderful post asking for a seventh Millennium Prize now that Poincare's conjecture has been solved. I posted ...
3 comments:
Friday, July 23, 2010

CRA Snowbird Part II

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Considerable discussion about funding at CRA Snowbird . Ken Gabriel, Deputy Director of DARPA, talked about how DARPA is restructuring its ...
Thursday, July 22, 2010

CRA Snowbird Part I

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I just returned home from my first trip to the  CRA Snowbird Conference , the biennial meeting of CS chairs and other leaders in the CS comm...
7 comments:
Wednesday, July 21, 2010

Do you want to review a book

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I will be sending my next book review column for SIGACT NEWS off on July 28, 2010. It has LOTS of books on its BOOKS I WANT REVIEWED list. Y...
11 comments:
Monday, July 19, 2010

Factors for getting a job- Arbitrary, random, and complex

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The Job Market in Theory (likely in all of academia) has more randomness and arbitrariness (are those the same?) then people may realize. ...
66 comments:
Friday, July 16, 2010

How I Find Homework Problems

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What do you get out of this paragraph (from Charlie Stross'  The Atrocity Archives  via Daniel Lemire ) The [Turing] theorem is a hack...
13 comments:
Thursday, July 15, 2010

Sparse problems in NP thought to not be in P

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(This post is similar to this old post . I am posting this anyway since when I first posted I made fundamental mistake. I fixed it the point...
10 comments:
Wednesday, July 14, 2010

GCT Workshop (Guest Post by Josh Grochow)

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Last week, the Center for Computational Intractability hosted a Geometric Complexity Theory Workshop . Geometric complexity theory (GCT) i...
12 comments:
Monday, July 12, 2010

Can you ever be denied Full Prof? Can you ever really fail a PhD defense.?

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Is it possible for someone to be denied Full Prof? Yes, but it is rare. Is it possible for someone to fail a PhD defense? Yes, but it is ...
16 comments:
Thursday, July 08, 2010

Conflicts of Interest

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a conflict-of-interest? Some thoughts. Thought One PROF: I can't vote on Professor X's Full Prof case since I have a confli...
7 comments:
Wednesday, July 07, 2010

Drowning in Data

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At a CCC Council meeting last week, a common theme emerged. The Army is "swimming with sensors and drowning in data". Biologists ...
9 comments:
Friday, July 02, 2010

Theory Happenings

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FOCS accepts , abstracts  and  PDFs . The conference itself will be held October 23-26 in Las Vegas. There is a proposed TCS version of ...
17 comments:
Thursday, July 01, 2010

Is this solution cheating?

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Consider the following problem: A hole is drilled through the center of a sphere. The cylinder-with-caps is removed. The length of the r...
17 comments:
Wednesday, June 30, 2010

Broader Impacts

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Nicole Immorlica reports on the NSF CISE Broader Impacts Summit held last week in DC. We've all seen it. Most of us have even written...
21 comments:
Tuesday, June 29, 2010

The P vs NP quiz Show. NP! NP! NP!

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Some random thoughts about quiz shows. THOUGHT ONE: There could be a quiz show based on P and NP. We all think that FINDING an answer is...
1 comment:
Monday, June 28, 2010

The Lefthanded Latina Lesbians in Algebraic Topology Workshop

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There was a Women in Theory Workshop at Princeton From June 19-23. ***SORELLE***, who was there, has some intelligent and interesting t...
14 comments:
Thursday, June 24, 2010

Talking about your work with a layperson

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How to best describe what we do to the layperson? It depends on what you mean by layperson . I was in Austin Texas visiting my nephew Ja...
21 comments:
Wednesday, June 23, 2010

The Future of STOC

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I set up a new blog, Future of STOC to discuss role of our main conference and how to achieve it. At STOC this year we had a relatively l...
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