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1.3.1 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.
The CoCoA operators are, from the highest to the lowest priority:
[] . (selection operators)
^ %
+  (as unary operators)
* : /
+  (as binary operators)
..
= <> < <= > >=
IsIn
And
Or
Operations with equal priority are performed from left to right.
When in doubt, parentheses may be used to enforce a particular order of
evaluation.