EVERYDAY MATH
Data on abilities reveal a great deal of overlap for men and women
When one figure goes up as another goes down, math can help us look at problems from a new perspective.
When a mathematician tries to sew a dress, the concept of positive and negative curvature can help—up to a point.
The key to stopping the Covid-19 pandemic lies in lowering the rate at which infections multiply.
When two cycles don’t exactly match, the result can be messy—and sometimes beautiful.
The equation behind body-mass index is simpler than the math used in space flight, but measuring human bodies is a tricky business.
The numbers we give to years like 2020 are arbitrary, but they have real-world consequences.
To understand everything from cancer risk to tax rates, we need to cultivate statistical literacy.
In principle, math should be able to tell us whether it will rain tomorrow—but in practice, things get complicated quickly.
When does C9F equal 3,231? When you’re using hexadecimal, one of the alternative number systems that make computers possible.
Maps, computer programs and mathematical proofs all create intricate wholes by joining many simple parts.
A powerful tool for summarizing data, they can also mislead when their terms aren’t made clear.
Whether you’re sorting a pile of books or a deck of cards, a step-by-step flow chart can help.
Trigonometry is more than memorizing formulas: It allows us to change the way we see the world
Pi and other numbers like it show that mathematical systems can be more ambiguous than we usually think
To mix butter and milk in the right proportions, an algebraic equation can help
Arithmetic progressions, like the candles of Hanukkah or the gifts of ‘The Twelve Days of Christmas,’ can be powerful tools in number theory
The right equations can help solve congestion by treating cars on a road like fluid in a pipe
Modern cryptography depends on arcane theorems whose inventors never dreamed they would have a practical use
Set theory has applications in the real world, from bars to train schedules
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