1 2 3 4 5 6 7 8 9 10. The notation uses symbols or symbolic expressions that are intended to have a precise semantic meaning. The following diagram shows what is function notation.
Essentially y is replaced with f x.
For integrals use int with usual notation for subscripts and superscripts. Equivalent expressions are x is a member of A x belongs to A x is in A and x lies in A. The following diagram shows what is function notation. In the history of mathematics these symbols have denoted numbers shapes patterns and changeThe notation can also include symbols for parts of the conventional discourse between.