Suppose v1,..., Vk are linearly independent vectors in R" (1

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter6: Linear Transformations
Section6.1: Introduction To Linear Transformations
Problem 78E: Let S={v1,v2,v3} be a set of linearly independent vectors in R3. Find a linear transformation T from...
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Suppose v1,..., Vk are linearly independent vectors in
R" (1 <k < n). Then the set Xk = conv{±v1,...,±v }
is called a k-crosspolytope.
a. Sketch X' and X².
b. Determine the number of k-faces of the 3-dimensional
crosspolytope X³ for k = 0, 1,2. What is another name
for X3?
c. Determine the number of k-faces of the 4-dimensional
crosspolytope X* for k = 0,1,2, 3. Verify that your
%3D
answer satisfies Euler's formula.
d. Find a formula for fi (X"), the number of k-faces of X",
for 0 <k <n – 1.
Transcribed Image Text:Suppose v1,..., Vk are linearly independent vectors in R" (1 <k < n). Then the set Xk = conv{±v1,...,±v } is called a k-crosspolytope. a. Sketch X' and X². b. Determine the number of k-faces of the 3-dimensional crosspolytope X³ for k = 0, 1,2. What is another name for X3? c. Determine the number of k-faces of the 4-dimensional crosspolytope X* for k = 0,1,2, 3. Verify that your %3D answer satisfies Euler's formula. d. Find a formula for fi (X"), the number of k-faces of X", for 0 <k <n – 1.
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