J. Mas

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Let A x = b be a large and sparse system of linear equations where A is a nonsingular matrix. An approximate solution is frequently obtained by applying preconditioned iterations. Consider the matrix B = A + P Q T where P , Q ∈ ℝ n × k $P, Q \in \mathbb {R}^{n \times k}$ are full rank matrices. In this work, we study the problem of updating a previously(More)
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