Richard Morris

Online geometry, java and other eclectic information.

rich@singsurf.org

Online Curve and Surface apps

2D
	Graphs	Parametric	Polar	Implicit
3D
	Implicit Surfaces

Advanced demo, covers all types of curves and surfaces.

Jep

A Java library for parsing, evaluating mathematical equations.

Latest version

Available at singularsys.com, includes a configurable parser allowing different syntax of equations.

Older versions

With DJep extensions for differentiation, vectors and matrices, arbitrary groups, and fast evaluation.

• Demos:
  • Differentiation,
  • Vectors and Matrices
  • Groups.
• Documentation: Jep, DJep, Javadoc.
• SourceForge project page

Javascript version

GWTJep a JavaScript parser/evaluation, based on Google Web Toolkit and offer good security for user inputted equations.

Kaleidoscope

Explore the 17 symmetric wallpaper patterns.

• Wallpaper Patterns

Mathematics tuition

Interested in private mathematics tuition in south-east Cornwall? I offer tuition at all ages and all levels with an emphasis on engaging the student and exciting the students:

My son has just finished his GCSEs and I had a fantastic tutor, Richard Morris, who taught him for 1.5 hours per week for about 12 wks before his exams. From really disliking maths he now really loves it and found his exam straightforward. - Di Baker MentOrg

Polyhedra

A collection of uniform polyhedra in rotatable 3D.

• Polyhedra viewer

Left-Right brain and leaning styles

Cubic surfaces

All the surfaces defined by cubics equations.

• Singularities of cubic surfaces.

Four-bar linkages

Interactive example of linkages.

• Four-bar linkages

A Parade of surfaces

A pictorial introduction to singularity theory.

Sorites Paradox

A philosophical investigation into how discrete labels can be given to continuously changing phenomena.

• Hysteresis and Sorites

Stepney

My father Derek Morris's page on Early Modern Stepney History. With details on his research into Mile End Old Town, Wapping, and the East End of London in the 18th and 19th centuaries.

Plants For A Future

• Main website
• Database of 7000 useful plants

CV

Papers

Some of my mathematical papers.

• A Web-based Client-Server System for the Calculation of Algebraic Surfaces Slides Full paper
• A new method for drawing algebraic surfaces
• The sub-parabolic lines of a surface
• The use of computer graphics for solving problems in singularity theory
• Statistical models of object interaction.
• Visualizing duals of surfaces unpublished.

Other Stuff

Los'Samba Samba band based in Lostwithiel and Lerryn, South East Cornwall.

My wiki with some images of the wood-burning heating system I've got installed.

Random Thoughts from a Random Fellow: My blog.

ModCounter: A Greasmonkey script to count the number of mod points used in Slashdot.

Merseyside Dock Action me being arrested at an Earth First! action in the early 90's.

Moon phases long term variations in the length of time between full moons.

A simple graphics program for teaching geometry.

Flash Gravity Game simple game in Flash, made using open source tools and raw action script.

You can find me on Wikipedia (Salix alba), Facebook, MySpace (singsurf), Bebo (rich255), (YouTube), Slashdot (pfafrich), and WiserEarth (Salix)