Question

the symbol for correspondence is..
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Answer 1

Answer:

As a rule, a correspondence is denoted by a triple (R,A,B) and one may write aRb or R(a,b) in place of (a,b)∈R. Instead of "correspondence" the term "binary relation" , or "relation between setsrelation" is sometimes used (in the general case where A and B need not coincide)

Answer 2

Answer:

As a rule, a correspondence is denoted by a triple (R,A,B) and one may write aRb or R(a,b) in place of (a,b)∈R.