Professor Raúl Rojas has published a book about how symbols have been used throughout history in mathematics. The work was translated into English this year.

The asterisk (*) is the wildcard character that represents any sequence of characters, including when there are no characters at all. It’s the most flexible of the bunch, since it can replace any ...

The @ symbol can also appear in regular formulas outside of tables when Excel thinks you're trying to reference a single value from a range. If you see it pop up unexpectedly, it usually means Excel ...

Javascript must be enabled to use this site. Please enable Javascript in your browser and try again. Join Wish of a Lifetime from AARP in celebrating veterans with ...

New York City has added another warning to its restaurant menus — this time for sugar. A new symbol showing a white spoon inside a black triangle now appears on menus at chain restaurants across the ...

Have you ever followed a YouTube tutorial, carefully copied an Excel formula, and hit “Enter,” only to be met with an error or baffling results? It’s a ...

The simplest way to add an apostrophe before a date in Excel is to type it directly before the date when entering it in a cell. This method works best when you’re dealing with a small number of ...