Editing Discrete logarithm (section)

=== Powers of a fixed real number ===
A similar example holds for any non-zero real number <math>b</math>. The powers form a multiplicative [[subgroup]] <math>G = \{\ldots , b^{-2}, b^{-1}, 1, b^{1}, b^{2}, \ldots \}</math> of the non-zero real numbers. For any element <math>a</math> of <math>G</math>, one can compute <math>\log_b a</math>.