This door detail from the Quinta de Regaleira in Sintra, Portugal caught my eye.
Maybe because it put me in mind of the Mandelbrot set.
While at the 2011 Bridges Conference, I learned a bit about the mathematics of weaving. One of our projects was to plan and weave a tiling of the plane. For some unknown reason, I chose a Halloween theme.
What better way to emphasize the eternal nature of mathematical truth!
First, a classic:
Then, something a bit more modern:
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