Source: wikibot/boy-s-surface
= Boy's surface
{wiki=Boy's_surface}
Boy's surface is a non-orientable surface that is an example of a mathematical structure in topology. It is a kind of 2-dimensional manifold that cannot be embedded in three-dimensional Euclidean space without self-intersections. Specifically, it can be constructed as a quotient of the 2-dimensional disk, and it can be visualized as a specific kind of "twisted" surface.