do some operation on a set of values

[Peyman <peiman_3009@...>]

hi all,
i want know in lua this is possible (in any way) or not ?
for example i have a = {1, 2, 3} and b = {5, 6, 7} so i want know this is possible :
c = a + b
or
c = a * b
and lua + or * all values and return new table in c variable.
some body know any way ?
thanks.