Entanglement appears to be a fundamental building block of quantum gravity
leading to new principles underlying the nature of quantum space-time. One such
principle is the ER-EPR duality. While supported by our present intuition, a
proof is far from obvious. In this article I present a first step towards such
a proof, originating in what is known to algebraic topologists as the
Mayer-Vietoris theorem. The main result of this work is the re-interpretation
of the various morphisms arising when the Mayer-Vietoris theorem is used to
assemble a torus-like topology from more basic subspaces on the torus in terms
of quantum information theory resulting in a quantum entangler gate (Hadamard
and c-NOT)