Commit 2023-06-19 07:36 2ff3402b

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feat: port Archive.Wiedijk100Theorems.SolutionOfCubic (#5203)

Estimated changes

Modified Archive.lean

Created Archive/Wiedijk100Theorems/SolutionOfCubic.lean

added theorem Theorems100.cube_root_of_unity_sum

added theorem Theorems100.cubic_basic_eq_zero_iff

added theorem Theorems100.cubic_eq_zero_iff

added theorem Theorems100.cubic_eq_zero_iff_of_p_eq_zero

added theorem Theorems100.cubic_monic_eq_zero_iff