Is There a General Relationship Between the Range of T and the Null Space of T?

In summary, the "rank-nullity" theorem states that the dimension of the null space of a linear transformation plus the dimension of the range of the transformation is equal to the dimension of the original space. This means that the range of the transformation and the null space have a general relationship.
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Given a linear transformation T from V to V, can we say that the range of T is in the space spanned by the column vectors of T. And we already know that the null space of T is the one spanned by the set of vectors that are orthogonal to the row vectors of T, then is there any general relationship b/t the range of T and the nulll space of T ?
 
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  • #2
Yes, the "rank-nullity" theorem: If T is a linear transformation from U to V then the nulliity of T (the dimension of the null space of T) plus the rank of T (the dimension of the range of T in V) is equal to the dimension of U.
 

FAQ: Is There a General Relationship Between the Range of T and the Null Space of T?

1. What is the definition of the range of T?

The range of T, also known as the image of T, is the set of all possible outputs or values that can be obtained by applying the transformation T to the elements of the domain.

2. How is the range of T related to the null space of T?

The range and null space of T are complementary subspaces that together span the entire vector space. The range is the set of all non-zero vectors that are mapped to by T, while the null space is the set of all vectors that are mapped to zero by T.

3. Can the range of T be larger than the null space of T?

Yes, it is possible for the range of T to be larger than the null space of T. This occurs when the transformation T is not one-to-one, meaning that multiple elements in the domain may map to the same element in the range.

4. How is the range of T affected by changes in the transformation matrix?

The range of T is directly affected by changes in the transformation matrix. As the matrix is modified, the range may expand, contract, rotate, or shift depending on the specific changes made.

5. Why is understanding the range and null space of T important in linear algebra?

Understanding the range and null space of T is important in linear algebra because it allows us to analyze and manipulate transformations in a vector space. It also provides insights into the properties of a transformation and can help in solving systems of linear equations and other mathematical problems.

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