External direct sum
Summary
The external direct sum of a family of vector spaces is the space of families of vectors, one vector from each space. Only finitely many entries of such a family are nonzero. For finitely many spaces it is the product of the spaces.
What this node needs for W1
- an inventory row: the row of the inventory that the node accounts for (0 of 1)
The writing levels say how complete the text of a node is. They do not measure its truth.
Sources
- Web https://en.wikipedia.org/wiki/Direct_sum_of_modules, Construction for two vector spaces
What links here
Definitions
- External direct sum 02WZB422CE