tcese experimental gismu

x1 (event) is lightlike-separated/signallike-separated/coincident from x2 (event) under signal means/in universe/by information channel (parametrization) x3

See also: temse, calse.


In notes:

temse
x1 (event) is timelike-separated from x2 (event) under signal means/in universe/by information channel (parametrization) x3