I don't know how to solve this problem:

Let be a continuous real function such that for each

is the fractional part of number x)

Prove that then or is a periodic function.

Could you help me?

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- Jan 8th 2013, 07:27 AMwilhelmFractional part, periodic function
I don't know how to solve this problem:

Let be a continuous real function such that for each

is the fractional part of number x)

Prove that then or is a periodic function.

Could you help me?