Tap here to turn on desktop notifications to get the news sent straight to you.
Where and When Did the Symbols "+" and "–" Originate?
The symbols for the arithmetic operations of addition (plus; "+") and subtraction (minus; "-") are so common today we hardly ever think about the fact that they didn't always exist.
How do you read "-3"?
Dr. Keith Devlin
Mathematician, Stanford University
How do you say "-3": "negative three" or "minus three"? It sounds like a simple enough question. But a recent group discussion on LinkedIn generated over 60 contributions when I last checked. People seem to have very clear preferences as to what is "right."
Do you have info to share with HuffPost reporters?
Culture & Arts
TV & Film
Style & Beauty
Food & Drink
Home & Living
Impact: Project Zero
Impact: This New World
Listen to America
FROM OUR PARTNERS
Sleep & Wellness
What's Working: Purpose + Profit
The Power of Humanity
Difference Maker 100
Expert analysis and commentary to make sense of today's biggest stories.
Sign up here to have the best stories delivered straight to your inbox.
First-person essays, features, interviews and Q&As about life today.
Get breaking news alerts
Download our app
Go to mobile site