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  The classical constants   ,  ,  ,  ,  ,  ,  , and the imaginary unit  can be represented as particular values of expressions that include functions (Fibonacci  , algebraic roots, exponential and inverse trigonometric functions, complete elliptic integrals  and  , dilogarithm  , gamma function  , hypergeometric functions  ,  , Meijer G function  , polygamma function  , Stieltjes constants  , Lerch transcendent  , and Hurwitz and Riemann zeta functions  and  ), for example: The four classical constants  ,  ,  , and  and the imaginary unit  can sometimes be represented through other classical constants and the imaginary unit by formulas such as the following: |