After developing them into complex numbers domain,non-iterative formulae with a very concise form for Gauss projection\'s forward and inverse transformations are also available.

The Halley s iterative formula based on rational approximation;

The formulas of hy-draulic elements and iterative formulas of critical depths for standa.

This article discusses in detail the hydrate formation conditions and affecting factors, analyses hydrate predection method and the caculating models for hudrate formation temperature and pressure, including iterative formulas for calculating minimum temperature of hydrate no-formation according .

In this paper,a new iteration formula and error estimate aboute system of linear equation are given.

This paper gives the iteration formulas for Maslov-type index of hyperbolic closed characteristic on positive-type hypersurfaces in R~(2n).

In this paper, the intermediate value formulas for roots of equations are proved , the third-order convergent iteration formula is obtained.

Then we derive some recursive formulas.

In this paper, the author discusses the calculation of aggregate claim amounts for two heterogeneous policies portfolios, by supposing that the claim number has a mixed Poisson distribution and then derives some recursive formulas.

In this dissertation a new recursive formula for computing normal forms based on the adjoint operator method of dynamical systems is first introduced.

A root-seeking iteration is presented based on linear fraction function.