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Continue to ChatApproximation by matrix valued linear positive operators - https://avesis.gazi.edu.tr/yayin/2fcad410-7daf-40ab-a8fa-b70c6f9e487a/approximation-by-matrix-valued-linear-positive-operators
Approximation by matrix valued linear positive operators - https://avesis.gazi.edu.tr/yayin/2fcad410-7daf-40ab-a8fa-b70c6f9e487a/approximation-by-matrix-valued-linear-positive-operators