TRGSW encrypts elements of the ring 𝓡ℤ (integer polynomials) with bounded ℓ∞-norms (of the corresponding vectors in ℤN under the natural identification 𝓡 ≃ ℤN). TRLWE encrypts elements μ of the 𝓡ℤ-module 𝕋𝓡 that can also be viewed as elements of 𝕋N via...