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Nora is a master’s student at UCL, interested in applied maths. When not studying, you can (almost always) find her reading.

Easy to state, hard to prove: The Collatz conjecture
90 years later, we're still unable to prove this surprisingly simple statement
Significant figures: Sofya Kovalevskaya
Nora Koparan tells the story of the first female professor of mathematics
Crossnumber winners, issue 10
Did you solve it?
Top Ten: Mathematical celebration days
The definitive chart of the best dates
The analytics of healthcare
Simple Statistics can help businesses make informed decisions
Optimal Pac-Man
Matthew Scroggs spends too much time beating this arcade classic.