Video

Nerdy jokes for a rainy Thursday evening

Just a quick post with a really funny video my sister shared with me containing no less than 31 jokes for nerds.

I hope you enjoy this as much as I did.

Posted by Kristian in Other, 1 comment

Fermat’s Last Theorem

Fermat’s last theorem is one of the best known mathematical puzzles ever posed. It is very easy to understand yet it eluded a proof for 350 years. Fermat stated in the margin of Arithmetica that he had the most marvellous proof of the conjecture, but it was too long to fit in the margin. It has always been known as Fermat’s last theorem even though it has only been a conjecture for 350 years. Pierre de Fermat stated that

it is impossible to separate a cube into two cubes, or a fourth power into two fourth powers, or in general, any power higher than the second, into two like powers. I have discovered a truly marvellous proof of this, which this margin is too narrow to contain.

In other words

does not have solutions for n > 2. Continue reading →

Posted by Kristian in Math, 25 comments

Video on Difference Quotient

A few weeks ago I stumbled on a few videos on YouTube showing me something valuable. It is three videos telling about derivatives, one of the fundamentals of calculus.

The videos come from Mathtv.com which is a website with a ton of good explanatory videos on different math topics. I have only watched a few of them, but I am really impressed at the way they explain it. They have a channel on YouTube where there are a lot of videos, some which I haven’t found on the website, so check out both places. I think you will share my enthusiasm about the site once you see these videos. They also have a YouTube channel which seems to have a slightly different set of videos in them. Continue reading →

Posted by Kristian in Math, 0 comments

History of Numbers: The story of 1

I have found a 1 hour video on the history of the numbers. The video is created by the ex-Monty Python member Terry Jones and was created for the BBC in 2005. I think it is a very humoruos way to introduce some mathematical history, even though I can’t verify the correctness of the history.

It has been aired on television in many countries but I haven’t been able to find it on the web right now.

It gives me something to think about. Even though it seems simple to figure out the number 0, and even though much of the basic mathematics today seems simple, it has been incredibly difficult to invent. One examples is the numbers, we take them for granted today, but seeing in the video how difficult it was to invent a system without limitations to the size of the number you want to write says a lot about how far we have come in mathematics today.

Story of 1The video is available through sources like amazon as well, but only region 1, which means if you are a non us-citizen you may have problems viewing it. The image on the left is linked directly to the Amazon page where you can purchase it and let me earn commission.

On last thing I would like to mention is that several people, especially math teachers on the internet praises the video as being a good tool, so if you are in school maybe give your teacher a hint for something fun to watch and be inspired by.

Enjoy

Posted by Kristian in Other, 0 comments

Course in Linear Algebra by Gilbert Strang

Within the field of mathematics I handle every day linear algebra plays a vital role. Linear algebra is a field of mathematics that studies vectors and vector spaces. On common use of linear algebra is to solve a set of linear equations. Personally I learned it in university using a book by David C. Lay called Linear Algebra and Its Applications. It is a perfectly good book, and I can recommend it if you want to have a book on the topic.

The reason why I bring up the topic, is that I rediscovered a video version a MIT course in linear algebra taught by Gilbert Strang. I found the videos when I first studied to my exam in linear algebra. I think he teaches it in a very understandable manner.  All of the videos can be found at Academic Earth. However, I think that the videos there are poor quality, so I have compiled a list of the videos representing the course in a better quality. Continue reading →

Posted by Kristian in Math, 6 comments