Yes, it is. But it can only be perceived internally. I can “grok” by “sense” and conceptualize an infinite line whereby I can “pull points” off it, but the line remains undivided. The line is in a “space” and I can “feel” it and do literally anything with it, like bend it into a dog form, and put a light on it, attribute apple flavor to it, then eat it. The whole space is an environmental “state” of some kind.Whatever helps you sleep at night.
You said that "mind-space" is distinct from "physical-space", so is mind physical or not?