What are examples of not bounded above and not bounded below?

Answer 1

Every example I can think of ends up being "bounded".

At first, I was going to say "outer space" is not bounded. But it is at each point it meets a planetary body, such as the earth. However, gases may be an example of not bounded, unless trapped in a cylinder or other object.

Next, I was going to say that "air" is not bounded, but it is wherever it meets a solid or even another type of air current.

The sky is bounded where it meets outer space.

The ocean is bound by air above and land below.

Magma inside the earth is bound by the earth's surface.

Even light is bound by its own absence (e.g. shadow or darkness).

About the only things I can think of that have no "bounds" or "boundaries" include:

• the human spirit
• hope
• love
• faith
• an intelligent mind
• determination
• tenacity (the positive side of being stubborn)
• family connections