The paper withdraws its exact dense matrix multiplication theorem due to a global obstruction in active-state realizations and introduces an unbiased conservative AMM estimator that computes protected low/marginal parts exactly while applying AMM only to the high/high residual.
Matrix-by-matrix multiplication algorithm with O(N 2 log2 N) computational complexity for variable precision arithmetic
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Graded Projection Recursion (GPR): Corrections, Obstructions, and Conservative Approximate Matrix Multiplication
The paper withdraws its exact dense matrix multiplication theorem due to a global obstruction in active-state realizations and introduces an unbiased conservative AMM estimator that computes protected low/marginal parts exactly while applying AMM only to the high/high residual.