基本定理

fundamental theorem

(bound form) base; foundation / (bound form) radical (chemistry) / (bound form) gay (loanword from English into Cantonese, Jyutping: gei1, followed by orthographic borrowing from Cantonese)

basic / fundamental / main / elementary

root / stem / origin / source / this / the current / original / inherent / originally / classifier for books, periodicals, files etc

to set / to fix / to determine / to decide / to order

established theory / theorem (math.)

theorem

texture / grain (of wood) / inner essence / intrinsic order / reason / logic / truth / science / natural science (esp. physics) / to manage / to pay attention to / to run (affairs) / to handle / to put in order / to tidy up

fundamental theorem of algebra

fundamental theorem of algebra (every polynomial has a complex root)

fundamental theorem of calculus