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ROT256. · Apr 14, 2024

Multivariate Sum-Check

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This a short post explaining the multivariate sum-check : a fundamental subprotocol used throughout multivariate succinct arguments (e.g. Spartan, HyperPlonK, etc). Roughly speaking, it often serves the same role as the divisibility check in the univariate contexts. This post assumes familiarity with finite fields, polynomials and lagrange interpolation/basis.

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