absolutely convex set的用法和样例：
- Absorbing absolutely convex closed set
- Every weakly countably compact closed convex set in a locally convex space has the quasi-weak drop property.
- Projection onto convex sets (POCS) is used in this paper.
- The problem of the existence of a cone subdifferential for the cone convex set valued maps in the locally convex, linear and topological vector space is discussed.