As Venn wrote in his 1880 article "On the Diagrammatic and Mechanical Representation of Propositions and Reasonings," the diagram is a means of visualizing the relationships between two or more sets of things.
Or as the artist behind the doodle, Mike Dutton, explains on the Google website:
For example, one circle may contain things that are mammals. The other circle may contain things that have wings. The overlapping space that both circles occupy would consist of mammals that have wings.
The Doodle isn't the first tribute to Venn, who was born on August 4, 1834 and died on April 4, 1923. Others include the Venn building at the University of Hull in Yorkshire, England, and a stained glass window in a University of Cambridge dining hall.
BEFORE YOU GO
How to vote
Vote-by-mail ballot request deadline: Varies by state
For the Nov 3 election: States are making it easier for citizens to vote absentee by mail this year due to the coronavirus. Each state has its own rules for mail-in absentee voting. Visit your state election office website to find out if you can vote by mail.Get more information
In-person early voting dates: Varies by state
Sometimes circumstances make it hard or impossible for you to vote on Election Day. But your state may let you vote during a designated early voting period. You don't need an excuse to vote early. Visit your state election office website to find out whether they offer early voting.My Election Office
General Election: Nov 3, 2020
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