- #1
Freye
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Homework Statement
Let V = (F2)^3, the set of triples (x; y ; z) of numbers in F2, the fi eld with two
elements. V is a vector space over F2.
Prove that any subspace of V must have either 1, 2, 4, or 8 elements.
Homework Equations
F2 = {0,1}
The Attempt at a Solution
The only way that I can really think of approaching the problem is to say that some subspace U of V must have at least 1 element (the zero vector) and at most 8 elements, which would be V, the total set. From there I think I could somehow show that subsets with 3, 5, 6 or 7 elements are not subspaces, but I don't know how.