Digital sangaku

San-Gaku were illustrations of mathematical problems created in Japan in the 1700s and 1800s century during the Edo period This collection is a selection of some problems I revisited in today’s digital environment. In the printed version - Digital Sangaku part I and Digital Sangaku part II - I outline the geometry problem, describe the process by which I create the visualization and reference the mathematical solution of the problem. Both books are available at Amazon.com at https://www.amazon.com/Jean-Constant/e/B01MF7MLS0 All the illustrations in the books are available for print. Contact the artist for further information.