Local invariance assumption which encourages neighboring data pairs in the original space to be still close in the low-dimensional embedding subspace can be formulated as
Local invariance assumption essentially exploits the favorite relationship among similar data samples under unsupervised condition; however, it ignores unfavorite relationship between divergent data pairs.
That would support rather a Galileian addition theorem of velocities than the local invariance of light speed.
That means a coincidence within a tolerance of [+ or -] 20%.--Thus, we have to take this result as negative regarding a verification of a violation of local invariance of c.
The presence of derivatives [[Delta].sub.[Mu]][Psi] in the Lagrangian spoils the local invariance
, but it can be restored by 'correcting' the derivative with a correction term that specifies what is to count as 'the same phase' at different spacetime locations.