Schinzel's theorem
Appearance
![](http://upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Schinzel_Circle.png/472px-Schinzel_Circle.png)
Schinzel circles are a set of circles with a given number of integer points on the circumference of the circle.
If the number n of points on the circumference of the circle is even, n = 2k, then a Schinzel circle is given by:
- ,
whereas for odd n = 2k + 1,
- .
References
- ^ Weisstein, Eric. "Schinzel Circle". Wolfram MathWorld. Wolfram MathWorld. Retrieved 19 August 2015.
- ^ Mutanguha, Jean Pierre. "Schinzel's Theorem".