To the square, which can see only a slice of the sphere, the shape before him is that of a two-dimensional circle. The sphere has visited the square intent on making the square understand the ...

The Sphere function has d local minima except for the global one. It is continuous, convex and unimodal. The plot shows its two-dimensional form. The function is usually evaluated on the hypercube x i ...

Because the world is a sphere, it is difficult to accurately project this on a two-dimensional map. When the world is flattened to fit on a piece of paper it is distorted. This makes some ...