Recreational mathematician and aspiring teacher. Grew up a math nerd and consider the subject a major part of my identity. Fascinated by just about everything. Here's hoping this blog will open me up to some more creative outlets. That might be good for me at this juncture in my life :)
eaglestrike said: I'm so excited by your Rubik's collection how long have you been collecting? Where did you buy them? How much did the cost? Can you solve them all??
[In reference to this post] At the time, I had been collecting for 2-3 years, but that was almost a year ago. My collection had definitely grown since then! Most of them can be bought @ HKNowStore.com, which sells nothing but puzzles. A few were handmade by modifying existing puzzles. Of the puzzles in those pictures, there are only two that I have not solved [the big nearly-spherical one in the middle and the one in the very bottom left corner]. I need to post a new collection photo. Sometime soon, perhaps?
These two links have homeomorphic exteriors, that is, it is possible to transform the space around the first link into the second without cutting or glueing. Kenneth Baker presents the following series on his wonderful blog Sketches of Topology. Also check out his Flickr page.
I would give money to see an animated version of this.