Shiny Pebbles and other stuff

Subtraction presents various problems to learners of mathematics, not least with the mechanics of hand calculating the re...

Q: The universe is expanding, so what is it expanding into? A: The question is wrong. OK, that answer could use so...

Mathematics is the subject, probably more than any other, that we associate with precision. And yet a particularly power...

We learn how to write numbers (well, integers) in bases other than ten fairly early in our mathematical education. A bit ...

How careful do you have to be with probability problems? Very careful. Very, very careful. Lack of enough care leads to (...

Cantor's theorem states that the cardinality of a set is always strictly less than the cardinality of its power set. ...

The Universe is about fifteen billion years old, and started off with a Big Bang, as any fule kno. Well, kind of, but tha...