Wednesday, January 13, 2016

(x, why?) Mini: Real

(Click on the comic if you can't see the full image.)
(C)Copyright 2016, C. Burke.

At our roots, aren't we all a little irrational?

So R>0, the Non-Negative Real number set, is joined by, R, the Real number set; N, Natural numbers; Q, Rational numbers (R was taken); Z, Integers (don't ask); P, Primes; and C, Complex numbers.

I also saw a notation for H, denoting Quaternions -- I didn't even go there. Except to note that Q was taken already because R was taken already.

Come back often for more funny math and geeky comics.


Dennis Stout said...

And O for octonions, which H is a subset of.


Anonymous said...

Q comes from "quotient": Z comes from the german word "Zahlen": there's also A for the set of algebraic numbers....

Harvey Rabbit said...

And H, of course, is for Hamilton, after the guy who discovered quaternions.

(x, why?) said...

Oops. Logged on from the account I use for my class blog. (deleted that)

Click here for more on Octonions

Of course, I had an entry for that!