Homomorphism from Hom(W, F) to Hom(V, F)

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SUMMARY

The discussion centers on defining a homomorphism T* from Hom(W, F) to Hom(V, F) using a given homomorphism T from V to W. The problem originates from Herstein's "Topics in Algebra" and highlights the relationship between dual spaces. The initial approach suggested mapping all elements in Hom(W, F) to the zero functional in Hom(V, F), but the correct method involves utilizing the mapping T: V -> W to construct T*(w) that effectively maps V to F.

PREREQUISITES
  • Understanding of homomorphisms in linear algebra
  • Familiarity with dual spaces, specifically Hom(V, F) and Hom(W, F)
  • Knowledge of the concepts from Herstein's "Topics in Algebra"
  • Basic linear transformation theory
NEXT STEPS
  • Study the properties of dual spaces in linear algebra
  • Learn about the construction of homomorphisms between dual spaces
  • Explore examples of linear transformations and their duals
  • Review the relevant sections in Herstein's "Topics in Algebra" on linear independence and bases
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Students of linear algebra, mathematicians studying dual spaces, and anyone interested in the application of homomorphisms in algebraic structures.

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Homework Statement
Let T be a homomorphism from V into W. Using T, define a homomorphism T* of Hom(W, F) into Hom(V, F).


Note on notation
Hom(V, F) is just the dual space of V. Similarly for Hom(W, F).


The attempt at a solution
This is a problem from Hernstein's "Topics in Algebra". It is given before the sections covering linear independence, bases and dual spaces, which I find odd. I don't have much to work with here. The only T* I can define at this point is the one sending everything in Hom(W, F) to the 0 functional in Hom(V, F). Any tips?
 
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Pick a w in Hom(W,F). So w:W->F. You want T*(w) to map V->F. There's a natural way to use T:V->W to do that.
 
OOhhh...I see it know. Thanks a bunch.
 

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