ImaginaryUnit
Generated from the engine's own definition: compute-engine's symbol, which we neither extend nor document by hand. No examples yet — the crosswalk is the reason it has a page.
The imaginary unit, whose square is −1.
Wikipedia
Imaginary unitMathWorldiImaginaryUnitWikidataQ193796nLabimaginary unitDLMF1.9.E1FungrimConstIWolfram LanguageIImaginaryUnit: imaginarya constant, as compute-engine declares it