2 Dual Dual Spaces Let V and W be vector spaces over R. Recall that L(V, W), the set of all linear maps from V to W is a vector space over R. When W = R, L(V, R) is precisely the set of all linear functionals on V, and hence forms a vector space over R. This space is called the dual space of V. We record this important fact in the next theorem. Theorem 2.1. Let V be a vector space over R. Then the dual space of V, denoted by V*, is the set of all linear functionals on V. The dual space V* is a vector space over R. The next project problem concerns description of the dual space of a finite dimensional vector space. Theorem 2.2. Let V be a finite dimensional vector space over R, with basis (0₁, 02,..., n. Let 9₁, 92,..., On €
2 Dual Dual Spaces Let V and W be vector spaces over R. Recall that L(V, W), the set of all linear maps from V to W is a vector space over R. When W = R, L(V, R) is precisely the set of all linear functionals on V, and hence forms a vector space over R. This space is called the dual space of V. We record this important fact in the next theorem. Theorem 2.1. Let V be a vector space over R. Then the dual space of V, denoted by V*, is the set of all linear functionals on V. The dual space V* is a vector space over R. The next project problem concerns description of the dual space of a finite dimensional vector space. Theorem 2.2. Let V be a finite dimensional vector space over R, with basis (0₁, 02,..., n. Let 9₁, 92,..., On €
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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