How to understand the naming convention of IEEE standards?

Question

I see some IEEE standards from https://pubs.opengroup.org/onlinepubs/9699919799/:

POSIX.1-2017 is simultaneously IEEE Std 1003.1™-2017 and The Open Group Technical Standard Base Specifications, Issue 7.

So basically 3 formats of IEEE standard are involved here:

• POSIX.1-2017
• IEEE Std 1003.1™-2017
• The Open Group Technical Standard Base Specifications, Issue 7

How to interpret them?

What's the naming convention?

Thanks!

Answer 1

This document set has been ratified by three organisations. Each organisation has its own naming scheme so there are three different standards names for the same text.