Cryptograms: a mathematical key to the past

Leonardo’s Ultima Cena has intrigued and enthralled viewers for centuries. The painting will continue to be interpreted through both scholarly study and artists recreating it. Indeed, the analysis of the painting, and what da Vinci had in mind when he painted it, has been the subject of many books and articles, and will continue to engage the minds of thinkers in various academic disciplines. How does astrology enter the picture?