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From Computational Complexity
#### The Roeder Problem was Solved Before I Posed it (how we missed it)

(This is a joint post with David and Tomas Harris.)In my an earlier post (see here) I discussed the MATH behind a problem that I worked on, with David and Tomas...

From Computational Complexity
#### 1-week long Summer School for Ugrads Interested in Theory, and my comments on it

Recently a grad student in CS at UMCP emailed me the following email he got, thinking (correctly) that I should forward it to interested ugrads. --------------...

From Computational Complexity
#### The Roeder Seq Problems was Solved Before I Posed it (Math)

(Joint Post by Bill Gasarch, David Harris, and Tomas Harris) The divisor graph D(n) is an undirected graph withvertex set V={1,...,n}$ andedge set E={(a,b) : here...

From Computational Complexity
#### A Ramsey Theory Podcast: No Strangers at this Party

BILL: Lance, I am going to blog about the Ramsey Theory Podcast called No strangers at this partyLANCE: Oh, so that will be your April...

From Computational Complexity
#### I don't care about Ketanji Brown Jackson's LSAT scores and she does not care about my GRE scores

Tucker Carlson has asked to see Ketanji Brown Jacksons's LSATs. When I applied to College they (not sure who they are) wanted to see my SAT scores. Putting aside...

From Computational Complexity
#### Do you want to be the SIGACT NEWS book review editor?

I ran the SIGACT Book Review Column from 1997-2015 (18 years). You can find all of my columns, plus reviews I did for Fred, here.When I handed it off to Fred Green...

From Computational Complexity
#### Problem X won't be solved in MY lifetime- but what about...

1) In 1989 on the episde The Royale of Star Trek: The Next Generation (which takes place in the far future) Captain Picard is working on Fermat's last theoremIt...

From Computational Complexity
#### Random thoughts on the Russian Invasion of Ukraine

1) My first thought was: Doesn't Putin know that his army (and his society) is corrupt and people are promoted on loyalty rather than talent, hence the invasion...

From Computational Complexity
#### REU programs in general, and two at Univ of MD this summer.

REU stands for Research Experience for Undergraduates. REU programs are funded by the NSF. The NSF website of REU programs is here. Univ if MD at College Park dept...

From Computational Complexity
#### I did an Instagram Live with Mohammad Hajiaghayi

Today I did an Instagram Live with Mohammad H. He was the host, asking me questions. We discussed Our livesBlogging (which I do but he does not)Parenting (which...

From Computational Complexity
#### I will be on instagram/If you have two reals in a box- Answer (Guest Post by David Marcus)

I will be on instragram:We, Prof. Mohammad Hajiaghayi and Prof. William Gasarch plan to have an Instagram Live at @mhajiaghayi this SAT FEB 26, 1:30PM EDT (in...

From Computational Complexity
#### I will be on Instagram/If you have two reals in a box.... (Guest Post by David Marcus)

I will be on instragram:We, Prof. Mohammad Hajiaghayi and Prof. William Gasarch plan to have an Instagram Live at @mhajiaghayi this SAT FEB 26, 1:30PM EDT (inhere...

From Computational Complexity
#### PSPACE is contained in Zero Knowledge!! How come nobody seems to care?

(This post was inspired by Lance's post on Zero Knowledge, here, which was inspired by a video he has in the post which was inspired by... (I think this ordering...

From Computational Complexity
#### Regan Lipton celebrates my 1000th blog post and random thoughts this inspires

Ken Regan emailed me recently asking if our software could tell how many blogs I had done (not how many Lance+Bill had done). We didn't know how to do that butthose...

From Computational Complexity
#### Personal Reflections on Dick Lipton in honor of his 1000th blog/75th bday.

Is it an irony that Lipton's 1000th post and 75th bday are close together? No. Its a coincidence. People use irony/paradox/coincidence interchangeably. Hearing...

From Computational Complexity
#### Math problems involving Food

A few people emailed me an Math article on arxiv about cutting a pizza, and since I wrote the book (literally) on cutting muffins, they thought it might interest...

From Computational Complexity
#### Did Betty White die in 2021?/Why do people have their `end-of-the-year' lists before the end of the year?

I am looking at Parade Magazine's issue whose cover story is We say goodbye to the stars we lost in 2021.The date on the...

From Computational Complexity
#### Did Lane Hemaspaandra invent the Fib numbers?

(I abbreviate Fibonacci by Fib throughout. Lane Hemaspaandra helped me with this post.) We all learned that Fib invented or discovered the Fib Numbers:f_0=1,f_1...

From Computational Complexity
#### Yes Virginia, there is a Santa Clause for Complexity Theorists, If you Only Believe

(Guest Post by Hunter Monroe)
In this guest post and discussion paper, I present a remarkable set of structurally similar conjectures which, if you...

From Computational Complexity
#### Open: 4 colorability for graphs of bounded genus or bounded crossing number (has this been asked before?)

I have co-authored (with Nathan Hayes, Anthony Ostuni, Davin Park) an open problems column on the topic of this post. It is here.Let g(G) be the genus of a graph...