Axiom is  a general purpose Computer Algebra system. It is useful for research and development of mathematical algorithms. It defines a strongly typed, mathematically correct type hierarchy. It has a programming language and a built-in compiler.
Polybutylene is simply a type of plumbing material that was manufactured between the late 70's and early 90's. It is thought that it was installed in over 6 million homes during that time period.
They call me because Iâm a plumbing contractor and a home inspector, who has been quoted on the topic in local newspaper articles. The answers to many of their questions can be found in Michael Caseyâs article, âChecking for Leaks in Polybutylene Pipingâ, published in the 1995 July/August ASHI Reporter. Other questions I answer from the knowledge I gained installing PB for nearly eight years, and then repairing and replacing it for 18 more years.