y is by default interpreted as Cap[x,y]. Used in pure mathematics to mean cap product. Sometimes used as an overscript to indicate arc between. See The Mathematica Book: Section 3.10.4. See also: \[Cup], \[Intersection], \[CupCap], \[DownBreve].
THIS IS DOCUMENTATION FOR AN OBSOLETE PRODUCT. SEE THE DOCUMENTATION CENTER FOR THE LATEST INFORMATION.
\[Cap]
