Mathematician Ian Stewart's recent book "In Pursuit of the Unknown: 17 Equations That Changed the World" takes a close look at some of the most important equations of all time. A great example of ...

The first Friedmann equation is the most important of the two, since it's the most easy and straightforward to tie to observations. On one side, you have the equivalent of the expansion rate ...

All equations crystallize something important about the universe, whether it be the relationship between mass and energy, the gravitational attraction between two bodies or the sides of a triangle.

The equation contains the five most important numbers in math — 1, 0, pi, i, and e — with the three basic operations that give math structure: Addition, multiplication, and exponentiation.

It is a special case of a foundational equation in complex arithmetic called ... it comprises the five most important mathematical constants.” Leonhard Euler was an 18th-century Swiss-born ...

But Moshe Milevsky, a York University professor, has put all these equations into one readable and, truth be told, highly accessible book, “The 7 Most Important Equations for Your Retirement.” ...

In doing so, they tapped into a major open question about one of the oldest and most fundamental kinds of equations in mathematics ... at the time one of the most important unsolved problems in number ...