r^n, the set of n-tuples of real numbers, and l_2, the set of square-summable sequences, are complete
in mathematical analysis, a [metric space] m is complete provided every [cauchy sequence] of points in m converges to a point in m
"r^n, the set of n-tuples of real numbers, and l_2, the set of square-summable sequences, are complete" What is the definition of "complete"?