Bernstein's problem
Problem in differential geometry / From Wikipedia, the free encyclopedia
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For Bernstein's problem in mathematical genetics, see Genetic algebra. For Bernstein's Degrees-of-Freedom problem in motor control, see Degrees of Freedom Problem (Motor Control). For its possible generalization in global differential geometry, see spherical Bernstein's problem.
In differential geometry, Bernstein's problem is as follows: if the graph of a function on Rn−1 is a minimal surface in Rn, does this imply that the function is linear? This is true for n at most 8, but false for n at least 9. The problem is named for Sergei Natanovich Bernstein who solved the case n = 3 in 1914.