All of these are states of lacking and have no real existence.

The debate on the real existence of intermediate mass black holes is still open.

For him the universe and its processes have a real existence.

It has no real existence in the world we observe.

- someone's actual life was only the core of their real existence?

They had no real existence except as and when their lives touched hers.

This part of the city had no real existence other than as a place you passed through to somewhere more interesting.

He treats these as having a different and more real existence.

This animal has not been found since and its real existence is considered as doubtful.

But until now it has always been a mathematical fiction, having no real existence in the physical world.