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Painting by Functions

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Stage: 5 Challenge Level: Challenge Level:1

To get started, simply try colouring in some pictures. This is the best way to get a feel for the structure of the problem.


Once you have made a conjecture, you will be able to test it out on other pictures to gain confidence in its validity, or to reject it if you create a counter example.

To prove a conjecture ask yourself the question: what could go wrong to make it false? This is a good way to focus on the key underlying mathematical structure.

To begin with, you can certainly pick a region and give it a colour. The colour of certain other regions will necessarily follow. Try this approach and see where you and up with a choice.

For the question of toplogy, ask yourself why the first of these two images are topologically the same whereas the second pair are not: