Tag Archives: algebra

“Have you ever done acid, kid? This book is like Acid.” —John L. Rhodes, speaking of the book Topos Theory by Peter Johnstone (Source: http://www.amazon.com/gp/product/0521337798?ie=UTF8&tag=hiremebecauim-20&linkCode=as2&camp=1789&creative=390957&creativeASIN=0521337798)

Image | Posted on by | Tagged , , , , , , , , , , , , , , , , | Leave a comment

Sigma Algebras

Are mathematicians deliberately obscure? Or is it really so hard for them to write prose? Check out this description of σ-algebras from Wik***dia.BAD: In mathematics, a σ-algebra (also sigma-algebra, σ-field, sigma-field) is a technical concept for a collection of sets satisfying certain properties.[1] The main use of σ-algebras is in … Continue reading

Posted in Uncategorized | Tagged , , , , , , , , , , , , | Leave a comment

6-dimensional Sphere

Of course a 3-dimensional thing is bigger than a 2-dimensional thing. Just like a beach ball is bigger than a circle cut from paper.  And it’s equally obvious that a 4-dimensional thing would be bigger than a 3-dimensional thing. Or … Continue reading

Posted in Uncategorized | Tagged , , , , , , , , , , , | Leave a comment