Periodic Functions: Meaning of 1-Periodicity

[Rectifier]

I know that some functions are $2 \pi$ periodic but what does it mean that a function is $1$-periodic.

Is it $f(x+1n) = f(x)$ where $n \in \mathbb{Z}$ ?

 

[mfb]

Sure. Same principle just with different numbers.

 

[Mark44]

For example, $y = \sin(2\pi x)$ has a period of 1.