correctionMatrix -- calculate how first order deformations perturb obstruction vector

Synopsis

• Usage:

  (M,L) = correctionMatrix(F1,R1)

• Inputs:
  • F1, a matrix
  • R1, a matrix
• Outputs:
  • (M,L), a sequence

Description

F1 should be some first order perturbations of a matrix with R1 a lift of the corresponding relations, as in the output of firstOrderDeformations. M is a matrix representing the effect of these perturbations one order higher, and L gives a parameter-free version of the perturbations and lifted relations.