Abstract
By asssuming relational properties of local,  stratified space-time
measurements and using  simple graph symmetries, the laws  of electromagnetics
follow in their relativistic, four-dimensional form without invoking lorentz
transformations.  This suggests that the topological compactification of
pregeometric space-time points may be achieved through the laws of
electromagnetism.  The results are in agreement with those obtained
using lorentz transformations, spinors and forms.
at the end:
"An immediate-though speculative-suggestion is that the electromagnetic field
is the physical entity which keeps space and time coordinates both bonded and
distinct.  In fact, space-time and the electromagnetic field are, in this
view, indistinguishable."
Best regards,
Don Mikulecky