Unfortunately, the pi symbol is not included in this roster. Tap on the text field of whatever app you need to write on to pull up your iPhone keyboard. Hit the globe icon to cycle through your ...

But unless you’re a math teacher, you might not know why that number is represented by a certain symbol. So what does the Pi symbol mean? In case it’s been awhile since you sat down in a math ...

Today marks National Pi Day in the United States and around the world. The holiday commemorates a timeless symbol beloved by ... me as a mathematician, that's key. Whether we measure it in meters ...