theorem
proved
term proof
spatialNormSq_nonneg
show as:
view Lean formalization →
formal statement (Lean)
131theorem spatialNormSq_nonneg (x : Fin 4 → ℝ) : 0 ≤ spatialNormSq x := by
proof body
Term-mode proof.
132 unfold spatialNormSq
133 positivity
134
used by (11)
-
differentiableAt_coordRay_radialInv -
laplacian_radialInv_n -
laplacian_radialInv_zero_no_const -
partialDeriv_v2_spatialRadius -
spatialRadius_coordRay_ne_zero -
spatialRadius_ne_zero_iff -
spatialRadius_pos_of_ne_zero -
laplacian_radialInv_n_proved -
laplacian_radialInv_zero_no_const_proved -
partialDeriv_v2_spatialRadius_proved -
spatialRadius_coordRay_ne_zero_proved