What does the compacity mean in math?

Answer 1

In mathematics, "compacity" is likely a typographical error and may refer to "compactness." Compactness refers to a property of a space in topology where every open cover has a finite subcover. In simpler terms, a space is compact if it is both closed and bounded, such as a closed interval in the real numbers. Compactness is an important concept in analysis and other areas of mathematics, as it often leads to the ability to extend results from finite-dimensional spaces to more general settings.