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Triple point relation between filament number N = Aρ0 and maximum 
for which tapes are stable. The black triangles indicate results from N = 59, 101, 181, 440 and 1540 simulations where triple point 
was taken as the highest σ/d value at which a defect-free tape structure was found. Curves are predicted from continuum model where the defect-free cylinder/tape boundary (appendix A) crosses the critical threshold for fivefold defect stability in cylinders, 
.
