【计】 幂级数

series of decreasing powers division of powers powers of primes separation of executive, legislative, and judicial powers series of nonnegative terms series separation of the executive , legislative and judicial powers term of a series reversion of a series series transmission of information correlation of time series chief series of subgroups series of lot sum of powers distribution of powers separation of powers constitution of five powers constitution of three powers devolution of powers division of functions and powers trinity theory of governmental powers expansion of powers and transfer of profits