No, there is not.
A stationary point.
Krasnoselskii fixed point theorem states that under certain sircumstances the operator has at least one fixed point in a subset of a Banach space. It doesn't say anything about uniqueness of solutions, just existence, but sometimes this is usefull enough, and perhaps you can get uniqueness by some other way. I hope this answers your question
Every point on the surface of a sphere is the same distance from a fixed point in 3-dimensional space.
A sphere
It is because many things are measured with reference to a fixed point: it space or time. This point is called a reference point or origin.
A sphere.
Sphere
A fixed location in space is a point in the three-dimensional coordinate system that remains constant and does not change its position relative to other points. It serves as a reference or anchor point for measuring distances and positions within a specific frame of reference.
A fixed location in a space is called a fixed star.
A fixed location in a space is called a fixed star.
"Fixed in space" means that an object's position or orientation remains constant relative to a reference point or frame of reference. This term is often used in physics and engineering to describe an object's stability or lack of movement in a specific spatial context.
There is NONE ! But you can assume anything you wish as a reference point --- but you must realize that its arbitrary.