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1.4.1 CoCoA Operators: introduction

In CoCoA there are 5 main types of operators: algebraic
operators, relational operators, boolean operators, selection
operators, and the range operator.
There is also an nary operator
><
for forming
Cartesian products of lists and an operator
::=
used in
defining rings.
The meaning of an operator depends on the types of its operands; the
+
in the expression
A + B
represents the sum of polynomials, or of
ideals, or of matrices, etc. according to the type of A and B.