pub fn mobius_eq_1<FA>(u: [impl Into<FA>; 4], x: [impl Into<FA>; 4]) -> [FA; 4]where
FA: PrimeCharacteristicRing,
FA::PrimeSubfield: BinomiallyExtendable<{ D_EF }>,Expand description
Per-coordinate Möbius-adjusted equality kernel for eval-to-coeff RS encoding:
mobius_eq_1(u, x) = (1 - 2*u)*(1 - x) + u*x
= 1 - x - 2*u + 3*u*x