Scope note:
This symmetric property associates two instances of E92 Spacetime Volume that have some of their extent in common.
Examples:
- the "Urnfield" period (E4) overlaps with the "Hallstatt" period (E4)
In First Order Logic:
P132(x,y) ⊃ E92(x)
P132(x,y) ⊃ E92(y)
P132(x,y) ⊃ P132(y,x)