Application of matrix theory to solving the general formula of fractional linear recursive series;

A note on the general formula of a matrix order;

The general formula of the equivalent resistance of ladder type network are achieved with elementary method,and some relevant problems are discussed.

A method for general term formula of recurrence sequence of number;

Deriving and application of general term formula of several kinds recurrence sequence;

The concept of geometrical matrix for two dimensions is introduced Its general term formula and partial rectangular sum formula of the front m row and n columns are derived Some theorems and properties about it are clarified and define

Consequently,three practical ways for a general term are offered.

One derivation way of an ordered series of numbers general term is given and its application is illustrated by examples.

The definition of double equal ratio series is given in the paper and the general term and formula of former n terms are given.

General formulas of radial matrix elements and explicit expressions of radial average values for relativistic hydrogen atom of spin S=0;

The general formulas of matrix elements of operator rs are presented.

On the basis of previous works, in this paper, the general formulas and the recurrence formulas for radial matrix elements of the ring-shaped non-spherical oscillator are derived.