In and Out offers readers an opportunity to ask questions of the experts. The Mathematica Journal encourages readers to submit problems in care of the editor. Answers posted ...

We study the KP hierarchy through its relationship with S-functions. Using results from the classical theory of symmetric functions, the Plücker equations for the hierarchy ...

The Johnson-Neyman ANCOVA, used when nonhomogeneity of within-group regressions is present, poses special computational and plotting problems when three covariates are used. ...

The 1D Heisenberg spin model with anisotropy of the XXZ type is analysed in terms of the symmetry given by the quantum Galilei group gamma q(1). For a chain with an infinite ...

Accurate methods used to evaluate the inverse of the standard normal cumulative distribution function at probability p commonly used today are too cumbersome and/or slow to ...

A class of polynomial differential systems with high-order nil potent critical points are investigated in this paper.Those systems could be changed into systems with an ...

Using the program Mathematica 2.o we have fitted the computer simulation data of the radial distribution function (RDF) for almost 700 states and five values of the ...

When justified, moment methods may be used to evaluate probability density and distribution functions. These methods are particularly useful when moments are the only ...

The automation of the traditional Painleve test in Mathematica is discussed. The package PainleveTest.m allows for the testing of polynomial systems of nonlinear ordinary and ...

In this paper, center conditions and bifurcation of limit cycles at the nilpotent critical point in a class of quintic polynomial differential system are investigated. With ...