Fig. 4: Construction of the tensors \({T}^{{\prime} }\) forming the building blocks of the interacting \(\left\vert {\psi }_{{{\rm{PEPS}}}}^{{\prime} }\right\rangle\).
From: Exact projected entangled pair ground states with topological Euler invariant
The R-tensors get absorbed into the T tensor, increasing its bond dimension (indicated by thick directed lines).
