pub fn reduce_to_sumcheck<F: Field>(
claims: &[GPASumcheckClaim<F>],
) -> Result<SumcheckClaim<F, IndexComposition<TrivariateProduct, 3>>, Error>
pub fn reduce_to_sumcheck<F: Field>(
claims: &[GPASumcheckClaim<F>],
) -> Result<SumcheckClaim<F, IndexComposition<TrivariateProduct, 3>>, Error>