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in 1962 and Ennio De Giorgi in 1965, and to dimensions up to by Frederick J. Almgren Jr. in 1966 and to by Jim Simons in 1968. The existence of the Simons cone as a minimizing cone in demonstrated that the Bernstein theorem could not be extended to and higher dimensions. Bombieri, De Giorgi, and Enrico Giusti proved in 1969 that the Simons cone is indeed area-minimizing, thus

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