Key points are not available for this paper at this time.
Ab.stract. it has been sho~v~, by I)ahlquist 1 that , q~ k step method for the numericet 15 soll~tion of an orditlary differential equation is unstable unless the order is less than /:93 This paper is concerned with a modificati(m t~o the form of the multistep process such ti~r higher orders can be ~ttained. For k.~7 examples of such modified processes of order 2,~:-t :i have been found and these are given in full for k~(i.
J. C. Butcher (Fri,) studied this question.