Commit 2023-05-03 01:24 83ffd4f6

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feat: port Analysis.SpecialFunctions.Trigonometric.Chebyshev (#3764)

Estimated changes

Modified Mathlib.lean

Created Mathlib/Analysis/SpecialFunctions/Trigonometric/Chebyshev.lean

added theorem Polynomial.Chebyshev.T_complex_cos

added theorem Polynomial.Chebyshev.T_real_cos

added theorem Polynomial.Chebyshev.U_complex_cos

added theorem Polynomial.Chebyshev.U_real_cos

added theorem Polynomial.Chebyshev.aeval_T

added theorem Polynomial.Chebyshev.aeval_U

added theorem Polynomial.Chebyshev.algebraMap_eval_T

added theorem Polynomial.Chebyshev.algebraMap_eval_U

added theorem Polynomial.Chebyshev.complex_of_real_eval_T

added theorem Polynomial.Chebyshev.complex_of_real_eval_U