September 1963 - Vol. 6 No. 9
Features
A formula for numerical integration is prepared, which involves an exponential term. This formula is compared to two standard integration methods, and it is shown that…
Some computer operating systems have a bad habit of inserting tape marks into the output stream willy-nilly. This often results in loss of output when a tape is scratched…
M. L. Pei [Comm. ACM 5, 10 (Oct. 1962)] gave an explicit inverse for a matrix of the form M + &dgr;I, where M is an n-square matrix of ones and &dgr; is a nonzero…
A semi-iterative process for evaluating arctangents
The technique of obtaining arctangents by inverse interpolation [1] is a relatively long process not suitable for a subroutine. The Taylor series expansion for arguments…
A list processing system in which each list cell contains both a forward and a backward link as well as a datum is described. This system is intended for imbedding in…
MIRFAC: a compiler based on standard mathematical notation and plain English
A pilot version of the compiler MIRFAC, now in the operation, is described. The chief features of the system, which is intended for the solution of scientific problems,…
To meet the need for improved documentation of written computer programs, a simple system for effective communication is presented, which has shown great promise. The…
On the approximate solution of Δ u=F(u)
Three-dimensional Dirichlet problems for &Dgr;u = F(u), Fu ≧ 0, are treated numerically by an exceptionally fast, exceptionally accurate numerical method. Programming…
A general program for the analysis of square and rectanglar lattice designs
This paper describes a general-purpose program that will handle those incomplete block designs known as square and rectangular lattices. Flow diagrams are given so that…
Group participation computer demonstration
Engelbart1 has reported on some demonstrations in which a group functions as various parts of a digital computer. These demonstrations are concerned with binary…