A new rose has blossomed in the garden of mathematics: a flowery Venn diagram for 11 sets of objects. Venn diagrams use overlapping circles to show all possible relationships between sets.

For example, during the pandemic, Venn diagrams helped to illustrate symptoms of COVID-19 that are distinct from seasonal allergies. They are also often taught to school children and are typically ...

Google created an interactive illustration in honor of the 180th birthday of logician and philosopher John Venn — best known, of course, for inventing the circles known as the Venn diagram.