Redheffer matrix
Square (0,1) matrix
Summary
In mathematics, a Redheffer matrix, often denoted as studied by Redheffer (1977), is a square (0,1) matrix whose entries aij are 1 if i divides j or if j = 1; otherwise, aij = 0. It is useful in some contexts to express Dirichlet convolution, or convolved divisors sums, in terms of matrix products involving the transpose of the Redheffer matrix.
Originally created by R.e.b.
3/24/2009, 5:10:51 AM
Modified
12/15/2025, 6:47:32 AM
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