- #1
trap101
- 342
- 0
Let T: V--> W be an isomorphism. Let {v1,...vk} be a subset of V. Prove that {v1,...vk} is a linearly independent set iff {T(v1),...T(vk)} is a linearly independent set.
Attempt: All I know is that {T(v1),...T(vk)} means that each set of co-ordinate vectors can be written as a linear combination of the standard basis vectors, which means the co-ordinate vectors are linearly independent. As well if we are assuming T is isomorphic then T has an inverse. How or what other facts am I suppose to use?
I'm at one of those boiling points of frustration when it comes to these proofs. As if I really don't know how to construct them. What am I missing when it comes to constructing these things. ABout to blow a gasket.
Attempt: All I know is that {T(v1),...T(vk)} means that each set of co-ordinate vectors can be written as a linear combination of the standard basis vectors, which means the co-ordinate vectors are linearly independent. As well if we are assuming T is isomorphic then T has an inverse. How or what other facts am I suppose to use?
I'm at one of those boiling points of frustration when it comes to these proofs. As if I really don't know how to construct them. What am I missing when it comes to constructing these things. ABout to blow a gasket.