field

is the set of all tuples of length of elements of :
for and , we say that is the kth coordinate of .
[cite:;taken from @algebra_axler_2024 chapter 1 vector spaces; definition 1.11]
addition in is defined by adding corresponding coordinates:
[cite:;taken from @algebra_axler_2024 chapter 1 vector spaces; definition 1.13]
[cite:;refer to @analysis_cummings_2019 chapter 1 the reals; definition 1.5]