mathematical analysis > function > elementary function > logarithm > natural logarithm

... > mathematical analysis > complex analysis > analytic function > transcendental function > logarithm > natural logarithm

... > mathematical analysis > real analysis > real-valued function > analytic function > transcendental function > logarithm > natural logarithm

... > number > elementary arithmetic > operation > algebraic operation > logarithm > natural logarithm

... > algebra > elementary algebra > operation > algebraic operation > logarithm > natural logarithm