What number is infinity plus one? © Getty Images

What number is infinity plus one?

According to mathematicians, there are may types of infinity, but what happens when you add one?

Asked by: Nick Cooper, Bristol

Advertisement

Mathematicians have identified many different types of infinity, of which the ‘smallest’ is Aleph-null, which is reached by counting forever. Yet even this relatively modest version of infinity has many bizarre properties, including being so vast that it remains the same, no matter how big a number is added to it (including another infinity). So infinity plus one is still infinity.


Advertisement

Subscribe to BBC Focus magazine for fascinating new Q&As every month and follow @sciencefocusQA on Twitter for your daily dose of fun science facts.