A dumbbell with a very thin neck stays regular
Scale: Radius at neck = 0.01, radius of ends = 1, length of figure = 5.21. Shape of neck: Modeled on y=x2. Time step = 10-6. Spatial resolution of generating curve = 0.01-0.05. System: Toshiba 4015CDT Laptop with an Intel Pentium II 266 MHz. Computation time: About 42 minutes.
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