 Dave's Geometric Pix Gallery  David Joyce; Dept. of Mathematics & Computer Science, Clark University
Mandelbrot and Julia sets, with a generation form and an Explorer on which you can point and click to get more refined images;
Newton Basins and a form to generate them; a page describing tiling the hyperbolic plane; some wallpaper groups; a gallery of roulettes; kaleidoscopes, Bowditch patterns, and other miscellaneous pictures.
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 Gallery of Pseudospheres  Robert McLachlan
A short version of an article by Robert McLachlan, "A gallery of constantnegativecurvature surfaces," (Mathematical Intelligencer, Fall 1994, 3137) about "pseudospherical" surfaces, equally "saddleshaped" at each point, extensively studied in the nineteenth century and now having a minor revival because of connections with integrable systems. The product of their two curvatures at each point is 1 everywhere, so in a sense they are the opposite (or hyperbolic counterpart) of an ordinary sphere. They can be covered by coordinates known as "Tchebyshev nets."
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 Graphics Archive  The Geometry Center
General interest images of an artistic nature, or of general interest to the public, including fractals, digital art, etc.; Special Topics  images created during research projects at the Geometry Center; Video Productions  images from videos produced at the Geometry Center. Search the author index for a specific author or the title index for keywords.
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 Images and Mathematics (Mathematics Archives)  University of Tennessee, Knoxville (UTK)
A large collection of images based on or related to mathematical principles, many purely mathematical abstractions, such as fractals; others of natural objects whose shape is explained by equations and mathematical models (for example, a drum vibrating). Animated Drumheads; Chaos Gallery; Fractals; Algorithmic Art; Numerical Analysis Art Gallery; Fluid Dynamics Project; Geometry Through Art; Knots on the Web; Minimal Surfaces; and links to many other sites specializing in math visualization.
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 matthen  Matthew Henderson
"Things of interest in maths & science" created by a PhD candidate in Statistical Dialogue Systems who majored in mathematics as an undergraduate. Posts date back to March 2011, and routinely feature Henderson's original animated gifs: "Orbits around three equally sized planets arranged in an equilateral triangle," "Ranunculoid," "Opposite Cities," "Imagine a cat chasing a mouse," "If you released a ball on a merrygoround....," "The Shepard scale is an audio illusion," "Visual proof which suggests that 1/4 + 1/16 + 1/64… = 1/3," "Imagine taking a globe which had just been painted....," "Draw some random points on a piece of paper and join them up....," "When designing a machine, it's better to mesh gears together whose numbers of teeth don’t share a common factor," "Two touching identical circles have the same area as the negative space they create in a circumscribing larger circle," "Another interesting property of the logarithmic spiral is revealed if you roll it along a horizontal line," and "What would happen in a crowd evacuation in zero gravity?" and "Is it possible to hear the shape of a drum?" and "How can an ant gauge the area of a potential new nest site to see if it is appropriate for its colony?" and "What image is traced by a line moving according to the digits of π?" See also Henderson's online integrator, differentiator, graph plotter, and formula manipulator.
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