Suppose n, k ≥3 are integers with n ≤2k/2. Prove there exists an n ×n matrix A filled with 0’s and 1’s such that no k ×k submatrix is all 0’s or all 1’s. (a k ×k submatrix is a matrix formed by choosing any k rows and any k columns of A). Hint: Use the probabilistic method.
Suppose n, k ≥3 are integers with n ≤2k/2. Prove there exists an n ×n matrix A filled with 0’s and 1’s such that no k ×k submatrix is all 0’s or all 1’s. (a k ×k submatrix is a matrix formed by choosing any k rows and any k columns of A). Hint: Use the probabilistic method.
Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter3: Determinants
Section3.CM: Cumulative Review
Problem 29CM
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H4. Suppose n, k ≥3 are integers with n ≤2k/2. Prove there exists an n ×n matrix A
filled with 0’s and 1’s such that no k ×k submatrix is all 0’s or all 1’s. (a k ×k submatrix is
a matrix formed by choosing any k rows and any k columns of A). Hint: Use the probabilistic
method.
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