User:Alec/HaroldBitchingII

[ilmath]\xymatrix{ {v_0} \ar[r]^a & {v_0} \\ {v_0} \ar[ur]^c_c \ar[u]^b \ar[r]_a & {v_0} \ar[u]_b }[/ilmath]
Torus

[ilmath]\xymatrix{ {v_0} \ar[rrrrr]^a & & & & & {v_0} \\ & & & & & \\ & & & & \bullet \ar[uur]^y_y &\\ & & \bullet \ar[drrr]_u^u \ar[rr]^\alpha \ar[urr]_\beta \ar[uuurrr]^z_z & & \bullet \ar[u]_\gamma \ar[dr]_v^v \ar[uuur]^x_x & \\ {v_0} \ar@/^2ex/[uuuurrrrr]^c_c \ar[uuuu]^b \ar[rrrrr]_a \ar[rru]^w_w & & & & & {v_0} \ar[uuuu]_b }[/ilmath]
Torus with triangle removed