Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Question
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Please just answer (a,b &c)

 

Question 

This question here is to show that linear maps out of/into direct sums "behave" like matrices. 

Let V1,...,Vn, W1,..,Wm be vector spaces over F.

 

(a)
(b)
Suppose we are given linear maps Tij: Vj
T: V₁0
V₂ → W₁ ...
Vn
that "behaves" like the mx n matrix of linear maps
linear map
T₁1
T12
T21 T22
Tm1 Tm2
Show that every linear map
T: V₁0 Vn
with coefficients Tij € L(V₁, W₁)
→
Conclude that the set of linear maps
T: V₁0 V₂
can be identified with the set of matrices
T11
T12
T21 T22
Tm1 Tm2
is of this form for linear maps Tij: V; → W; (hint: inclusion into direct sum/projection
onto subspace)
(c)
Tin
T2n
W₁ ... Wm
Tmn
...
...
W; for each i,j. Construct a
Wm
W₁ ... Wm
Tin
T2n
Tmn
(d)
Does anything familiar happen when V₁
Vn = W₁
==
(Hint: when Vj = W₁ = F what is L(V₁, W;) isomorphic to? Think dimensions....)
=...
Wm= F?
expand button
Transcribed Image Text:(a) (b) Suppose we are given linear maps Tij: Vj T: V₁0 V₂ → W₁ ... Vn that "behaves" like the mx n matrix of linear maps linear map T₁1 T12 T21 T22 Tm1 Tm2 Show that every linear map T: V₁0 Vn with coefficients Tij € L(V₁, W₁) → Conclude that the set of linear maps T: V₁0 V₂ can be identified with the set of matrices T11 T12 T21 T22 Tm1 Tm2 is of this form for linear maps Tij: V; → W; (hint: inclusion into direct sum/projection onto subspace) (c) Tin T2n W₁ ... Wm Tmn ... ... W; for each i,j. Construct a Wm W₁ ... Wm Tin T2n Tmn (d) Does anything familiar happen when V₁ Vn = W₁ == (Hint: when Vj = W₁ = F what is L(V₁, W;) isomorphic to? Think dimensions....) =... Wm= F?
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Follow-up Questions
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Follow-up Question

Ok can you please work on parts (b &c)

 

Question 

This question here is to show that linear maps out of/into direct sums "behave" like matrices. 

Let V1,...,Vn, W1,..,Wm be vector spaces over F.

 

(a)
(b)
Suppose we are given linear maps Tij: Vj
T: V₁0
V₂ → W₁ ...
Vn
that "behaves" like the mx n matrix of linear maps
linear map
T₁1
T12
T21 T22
Tm1 Tm2
Show that every linear map
T: V₁0 Vn
with coefficients Tij € L(V₁, W₁)
→
Conclude that the set of linear maps
T: V₁0 V₂
can be identified with the set of matrices
T11
T12
T21 T22
Tm1 Tm2
is of this form for linear maps Tij: V; → W; (hint: inclusion into direct sum/projection
onto subspace)
(c)
Tin
T2n
W₁ ... Wm
Tmn
...
...
W; for each i,j. Construct a
Wm
W₁ ... Wm
Tin
T2n
Tmn
(d)
Does anything familiar happen when V₁
Vn = W₁
==
(Hint: when Vj = W₁ = F what is L(V₁, W;) isomorphic to? Think dimensions....)
=...
Wm= F?
expand button
Transcribed Image Text:(a) (b) Suppose we are given linear maps Tij: Vj T: V₁0 V₂ → W₁ ... Vn that "behaves" like the mx n matrix of linear maps linear map T₁1 T12 T21 T22 Tm1 Tm2 Show that every linear map T: V₁0 Vn with coefficients Tij € L(V₁, W₁) → Conclude that the set of linear maps T: V₁0 V₂ can be identified with the set of matrices T11 T12 T21 T22 Tm1 Tm2 is of this form for linear maps Tij: V; → W; (hint: inclusion into direct sum/projection onto subspace) (c) Tin T2n W₁ ... Wm Tmn ... ... W; for each i,j. Construct a Wm W₁ ... Wm Tin T2n Tmn (d) Does anything familiar happen when V₁ Vn = W₁ == (Hint: when Vj = W₁ = F what is L(V₁, W;) isomorphic to? Think dimensions....) =... Wm= F?
Solution
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Follow-up Questions
Read through expert solutions to related follow-up questions below.
Follow-up Question

Ok can you please work on parts (b &c)

 

Question 

This question here is to show that linear maps out of/into direct sums "behave" like matrices. 

Let V1,...,Vn, W1,..,Wm be vector spaces over F.

 

(a)
(b)
Suppose we are given linear maps Tij: Vj
T: V₁0
V₂ → W₁ ...
Vn
that "behaves" like the mx n matrix of linear maps
linear map
T₁1
T12
T21 T22
Tm1 Tm2
Show that every linear map
T: V₁0 Vn
with coefficients Tij € L(V₁, W₁)
→
Conclude that the set of linear maps
T: V₁0 V₂
can be identified with the set of matrices
T11
T12
T21 T22
Tm1 Tm2
is of this form for linear maps Tij: V; → W; (hint: inclusion into direct sum/projection
onto subspace)
(c)
Tin
T2n
W₁ ... Wm
Tmn
...
...
W; for each i,j. Construct a
Wm
W₁ ... Wm
Tin
T2n
Tmn
(d)
Does anything familiar happen when V₁
Vn = W₁
==
(Hint: when Vj = W₁ = F what is L(V₁, W;) isomorphic to? Think dimensions....)
=...
Wm= F?
expand button
Transcribed Image Text:(a) (b) Suppose we are given linear maps Tij: Vj T: V₁0 V₂ → W₁ ... Vn that "behaves" like the mx n matrix of linear maps linear map T₁1 T12 T21 T22 Tm1 Tm2 Show that every linear map T: V₁0 Vn with coefficients Tij € L(V₁, W₁) → Conclude that the set of linear maps T: V₁0 V₂ can be identified with the set of matrices T11 T12 T21 T22 Tm1 Tm2 is of this form for linear maps Tij: V; → W; (hint: inclusion into direct sum/projection onto subspace) (c) Tin T2n W₁ ... Wm Tmn ... ... W; for each i,j. Construct a Wm W₁ ... Wm Tin T2n Tmn (d) Does anything familiar happen when V₁ Vn = W₁ == (Hint: when Vj = W₁ = F what is L(V₁, W;) isomorphic to? Think dimensions....) =... Wm= F?
Solution
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by Bartleby Expert
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