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This is called a discrete set (all points isolated) or a finite set. Finite sets are always discrete.
Yes
Yes
A set which is made up only of isolated points is called a discrete set.
Generally, no. All circles contain an infinite number of chords, as a chord can be created between any two points on the circle. With an infinite number of points on the circle we can create an infinite number of chords.
A discrete graph.
This is called a discrete set (all points isolated) or a finite set. Finite sets are always discrete.
Yes
true
I think you are going for continuous variable, as compared with discrete variables.
Yes
A set which is made up only of isolated points is called a discrete set.
If you have a finite set of points (call them A1, A2, A3...), then you have a finite set of distances to the points. So for any point B, simply pick a distance D that's smaller than the distance between B and A1, the distance between B and A2, and so on. (This is possible, since there a finite number of points.) ================================================ Since there are no points within distance D of B (because this is how you chose D), point B can not be an accumulation point (because an accumulation point must have points within any given distance of it)
Generally, no. All circles contain an infinite number of chords, as a chord can be created between any two points on the circle. With an infinite number of points on the circle we can create an infinite number of chords.
A graph composed of isolated points.
I think you are going for continuous variable, as compared with discrete variables.
Infinite.