- + i - + i Polar Polar - + i - + i Polar Polar [ ] -1 Λ id id e ! max min | max min | max min - - - + * 2 gcd gcd ¬ for all : , , : ̲ - + ln ln log log log log d d d d d d d d Δ 2 | | \ = lim σ σ 2 median mode det T