I don't fully understand the relationship with that method of signing and the mathmatical notation I don't think you mean that if you perform a series of trans

I don't fully understand the relationship with that method of signing and the mathmatical notation I don't think you mean that if you perform a series of transformations on the body of your message you will get Keith I don't think you mean that your body of text is approximately equal to Keith, or Asymptotically equal to be precise. I don't think you mean that your body of text is essentially the same as you. Though all of these are somewhat close to what a signature means, I suppose. I've seen the ~Name notation around a fair number of times, I assumed it was just a form of notation.