Infinity Symbol-Shaped Circular House Hits the Market for the Unique Price of $3,399,888. ... but you're basically walking in a circle wherever you go," Kovacs notes.

The famous mathematical ratio, estimated to more than 22 trillion digits (and counting), is the perfect symbol for our species’ long effort to tame infinity. By Steven Strogatz This article ...

“It is for a circle of r=1, which I think is implied by x² + y² = r²” Not imπlied at all. Let r=5 or 10 or 8. The unit circle is for convenience, not a law of nature.

And why a circle, specifically? It, too, is a popular symbol. According to analysis of United States Patent and Trademark Office records, 21% of current American logos incorporate a circle of some ...