Four-step and three-step systematically reduced chemistry for wide-range H2–air combustion problems

Three-Step and Four-Step Random Walk Integrals

We investigate the moments of 3-step and 4-step uniform random walk in the plane. In particular, we further analyse a formula conjectured in [BNSW09] expressing 4-step moments in terms of 3-step moments. Diverse related results including hypergeometric and elliptic closed forms for W4(±1) are given and two new conjectures are recorded.

MODIFIED K-STEP METHOD FOR SOLVING FUZZY INITIAL VALUE PROBLEMS

We are concerned with the development of a K−step method for the numerical solution of fuzzy initial value problems. Convergence and stability of the method are also proved in detail. Moreover, a specific method of order 4 is found. The numerical results show that the proposed fourth order method is efficient for solving fuzzy differential equations.

Olver Problems for Recitation 20 The Four - Step Method

The Four Step Model

A Four Step Scheme

In this paper we investigate the nature of the adapted solutions to a class of forward-backward stochastic di erential equations (SDEs for short) in which the forward equation is non-degenerate. We prove that in this case the adapted solution can always be sought in an \ordinary" sense over an arbitrarily prescribed time duration, via a direct \Four Step Scheme". Using this scheme, we further p...