# What does $x_{1:n}$ notation mean? [closed]

Notation in my book, Introduction to Probability and Mathematical Statistics by Bain and Engelhardt, is $x_{1:n}$ and $x_{n:n}$. For example, see Example 10.2.3 (page 340). Here is a screenshot.

Can anybody tell me what this denotes?

## closed as unclear what you're asking by Shailesh, hardmath, coldnumber, Claude Leibovici, JMPFeb 5 '16 at 7:42

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

• You might need to include more detail. Usually, notations don't have a unique meaning. – Em. Feb 5 '16 at 3:00
• Most likely it stands for $x_1, x_2, \ldots , x_n$ – Shailesh Feb 5 '16 at 3:02
• Notation in which book? – David G. Stork Feb 5 '16 at 3:04
• Sorry if I wasn't very specific. I believe @Shailesh is correct. Thanks – Bbb Feb 5 '16 at 3:05
• Tell us what book? Help people help you. – Thomas Andrews Feb 5 '16 at 3:07

In my experience this might denote a sequence of numbers $x_{1}$, $x_{2}$, ..., $x_{n}$