##
Some Pictures of Algebraic Curves

### About the figures

The *pictures of individual curves* were plotted using software
developed at The Geometry Center,
at the University of Minnesota.
Specifically, those pictures were plotted using the
application "algcurve". The idea for this program was originally due
to Professor Audun Holme of the University of Bergen. The program was
written by members of the staff of the Geometry Center and was later
incorporated into the Pisces platform.

After the output from algcurve was converted to .gif format, the images
were embellished to put them in the form that is posted here. This included
use of the unix program xpaint. If you have access to xpaint or other
software for manipulating .gif files, you can download and experiment with
copies of the curve images - for instance, seeing how various lines or
circles intersect the given curve.

The two *families of plane curves* were drawn using Maple,
more specifically the `implicitplot`
command in Maple's Plots package. One can make similar plots
by using suitable Matlab graphics commands -- for instance the
`aPlot` and
`family` scripts described on the
Math 5385 computer tools page.

### The following items are linked here:

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Prof. Joel Roberts

School of Mathematics

University of Minnesota

Minneapolis, MN 55455

USA

Office: 351 Vincent Hall

Phone: (612) 625-1076

Dept. FAX: (612) 626-2017

e-mail: `roberts@math.umn.edu`

`http://www.math.umn.edu/~roberts`

*The opinions expressed in this page are strictly those
of the page author. The contents of this page have not been reviewed
or approved by the University of Minnesota.*