Mathematics of Love infinity 
The Mathematics of Love Illustration by Christine Rösch for "The Mathematics of Love" published by TEDBooks.
If you're fortunate enough to find someone you want to settle down with forever, the next question is: How do you achieve happily ever after? According to mathematician Hannah Fry, it may come down to a simple formula.
Fry, who works at the UCL Centre for Advanced Spatial Analysis in London, explains in her 2014 TED Talk and recently released book, "The Mathematics of Love," that the best predictor of long-lasting relationships is how positive and negative a couple can be to one another.