I’m currently in the midst of an international move, from the UK back to the US. This means that my days unfold in confused montages of jet-lag, scone-longing, and trying to get in on the wrong side of the car. Haven’t had much time for the blog, but I did have these cartoons lying around.
ME: What do you think of these drawings?
MY WIFE: Hey, a cat with a mustache. What’s not to like?
ME: That’s not a mustache. It’s whiskers.
MY WIFE: Okay. I’m not going to tell you what to call your cat’s mustache.
Cats have a symmetry group of order two, because there are two ways to transform a cat while preserving its basic structure: reflect it in a vertical mirror, or leave it alone.
Most cats prefer the latter.
A cat’s activity can be modeled by a delta function. That’s a function whose value is zero everywhere, except at a single point, and yet whose integral is 1. Similarly, the cat is motionless except when it is destroying furniture in the space of a single Planck time.
Note: a delta function is not really a function, just a distribution with good branding. Continue reading