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for Ising SGs on lattices of higher dimensions, the present estimate for the symmetric bimodal distribution is slightly below the one obtained through series expansions on the five-dimensional hypercubic lattice, ( k$_{B}$T$_{c}$/J ) ≈ 2 . 57 [39]. 

To conclude, we have investigated nearest-neighbor-interaction Ising spin glasses de- fined on three different hierarchical lattices, belonging to a family of Wheatstone-Bridge lattices, characterized by fractal dimensions D ≈ 2 . 32 , 3 . 58 , and 4 . 81. The interactions among pairs of spins were chosen from either a Gaussian, or a bimodal ( ± J ), non-centered distribution. Through calculations of the stiffness exponent, we have shown that the spin-glass lower critical dimension in these lattices should be greater than 2 . 32 . Finite- temperature spin-glass phases were found for the lattices of fractal dimension D ≈ 3 . 58 and D ≈ 4 . 81. In the former case, whose hierarchical lattice is constructed as an approx- imation to the cubic lattice, the estimates of spin-glass critical temperatures associated with zero-centered Gaussian and bimodal distributions are very close to the most recent estimates from extensive numerical simulations carried on the cubic lattice. Phase dia- grams were obtained for couplings following non-centered distributions – which are not entirely known, up to the moment, for spin-glass models on Bravais lattices – either for J$_{0}$ ≥ 0 in the case of the Gaussian distribution, or 1 / 2 ≤ p ≤ 1 in the case of the bimodal distribution; these phase diagrams are expected to represent good approximations for the corresponding models on Bravais lattices. 

