How Harvey Mudd Transformed Its Computer Science Program — And Nearly Closed Its Gender Gap

From Tech Crunch. Must watch video.

Harvey Mudd is known as one of the most elite science, engineering and mathematics colleges in the world. But historically, its computer science department hasn’t exactly been known as a paragon of gender diversity — in 2006, only 10 percent of Harvey Mudd’s computer science majors were female.

But under Dr. Maria Klawe, the renowned computer scientist (and Microsoft board member) who joined Harvey Mudd as president in 2006, the gender ratio at Mudd’s CS department has changed dramatically. This year, fully 48 percent of the CS majors in Harvey Mudd’s junior class are female.

Posted in interesting stuff | Tagged | Leave a comment

TED: Adam Spencer – Monster Prime Numbers

Take 17 minutes out of your day and watch Adam Spencer talk about the largest known prime (found in January of 2013). Amazingly engaging.

http://www.ted.com/talks/adam_spencer_why_i_fell_in_love_with_monster_prime_numbers.html

They’re millions of digits long, and it takes an army of mathematicians and machines to hunt them down — what’s not to love about monster primes? Adam Spencer, comedian and lifelong math geek, shares his passion for these odd numbers, and for the mysterious magic of math.

Posted in interesting stuff | Tagged , , | Leave a comment

Monday Morning Math

cat_with_calculator-600x450
Awesome cat photo from misadventures in HR.

If a cat could fill out a bubble sheet, and left parts II, III, and IV blank (assumption: cats can’t write in english) then the following is based on the 2013 June Regents scoring scale:

1 in 36,000 cats would pass the Integrated Algebra Regents (15 out of 30 multiple choice to score 30 out of 87 possible points. You’ve read that correctly, 34% correct is passing)
vs.
1 in 309,000,000 cats would pass the Geometry Regents (20 out of 28 multiple choice)
vs.
1 in 1,200,000,000,000 cats would pass the Algebra II Trigonometry Regents (23 out of 27 multiple choice)

P.S. Stat people, please double check my math. I am not strong in statistics, probably due my dislike of the subject. I used Stat Trek (get it?) to compute the binomial probabilities.

Posted in interesting stuff | Tagged , , | Leave a comment

Fermat Was Wrong? Puzzler

From Car Talk.

RAY: Here it is. Everyone, almost everyone remembers from his or her days in school the Pythagorean Theorem.

TOM: Yes.

RAY: A squared, plus B squared, equals C squared. And there are numbers like three, four and five; five, 12, 13 which satisfy that little equation. And many hundreds of years ago a French mathematician by the name of Fermat said, this only works for squares. He said, if you take A, B, and C, integers A, B, and C…

TOM: Yes.

RAY: And there are some A squared plus B squared that will equal C squared, and we believe that. We know we have verification of it. We got real numbers that work.

TOM: Right.

RAY: He said, if it isn’t squared but it’s something else like cubes or to the fourth power or to the fifth power, it doesn’t work. So, for example, there is no A cubed plus B cubed, which equals C cubed. There is no A to the fourth plus B to the fourth that equals C to the fourth.

As luck would have it, a young mathematician issues a statement that he has three numbers which prove Fermat’s theorem is incorrect. He calls a press conference. Now, he doesn’t want to divulge everything right away. He wants to dramatize, build a little bit, does he not?

TOM: Gonna give them one number.

RAY: He gives them all three numbers. He doesn’t tell the power.

TOM: Ah!

RAY: He’s going to give them A, B, and C. Here are the numbers, you ready?

A equals 91. B equals 56. C equals 121.

So, it just so happens that at this little impromptu press conference, there are all these science reporters from all the po-dunky little newspapers that are around this town. And one of the guys, one of the reporters has his 10-year-old kid with him, because this happens to be a holiday. He’s off from school. And the kid very sheepishly stands up and raises his hand, and he said, I hate to disagree with you, sir, but you’re wrong.

The question is, how did he know?

Love it.

Posted in interesting stuff | Tagged , , | 6 Comments

Did the NSA make a major math breakthrough?

From The Daily Dot:

To date, there is no known shortcut to quickly factor large integers into primes. It has never been proven that no such shortcut exists. We’ve just never found one.

If the unfactorable nature of these large integers doesn’t interest you, consider that it has been the reason many of your most personal messages are kept private as they move across the Internet.

But the Times report about how the NSA penetrated banking encryption seems to suggest the agency may have cracked the problem. Here’s why (and this is going to take some explaining):

They go on to explain how primes, public key encryption, and the RSA algorithm are related. Nicely done. Great read.

Posted in interesting stuff | Tagged , | 1 Comment

Daily Desmos: Call for Action

Surprisingly (to me) I haven’t talked about the Daily Desmos project on this internetsblog. Daily Desmos is a project that I’ve been involved with since March. It has daily graphing challenges that you can use the desmos graphing utility to solve.

For instance: What (polar) inequality created this graph?
advanced
(Created by the wonderful Sam Shah. If you can solve this unsolved puzzle then leave a comment here.)

Call for Action

We would love to have some new contributors to the Daily Desmos project.
Do you enjoy creating interesting graphs?
Do you want to help out a project that is trying to refocus on being more useful in classrooms?
Do you want to be included in the ranks of the illustrious DD crew (Sadie Estrella, Kate Nowak, Jessica Algebrainiac, Michael Fenton, Me, Justin LanierSam Shah, or our first retiree Michael Pershan)?

Responsibilities:

  • Create a basic and advanced graph once every two or three weeks.
  • Post the graphs on the blog.
  • ????
  • Profit!

To limit the anxiety that is natural with extra responsibilities during the school year, we’ve decided to create a 4 month term. If at the end of this term you feel you’d like to sign up again then you are free to do so. You may also appoint a successor to your position. Or leave the seat open to an open call. Up to you.

Sounds Great! How do I throw my hat in the ring?

Great question. Tweet (or email) me, Justin Lanier, or Michael Fenton. Thanks for your consideration!

Posted in Full Posts | Tagged , | 3 Comments