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The Poincaré series of a codimension four Gorenstein ring is rational
Abstract Let R be a regular local ring over a field k of characteristic different from two and let S = R I be a codimension four Gorenstein quotient with the same embedding dimension e as R . TheExpand
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Standard Bases for General Coefficient Rings and a New Constructive Proof of Hilbert's Basis Theorem
A constructive proof is given of the termination of the algorithm for computing standard bases in polynomial rings over a ''constructively noetherian'' ring. A new constructive version of theExpand
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Dependent delay relay
This dependent delay relay contains devices for converting the current signal which arrives in a binary number n. The relay contains multipliers organs binary control frequency, the control signal isExpand