To order any of the following publications, please send email to Upon payment of the retail price and any applicable postage we will send individual copies to anywhere. In due course we hope to automate the process and provide an online payment portal.

Resellers also are invited to contact. Please see the proviso outlined below.

NameDescriptionDateISBN NumberRetail Price
Tidings in Celestial Mechanics 110-page A4 wire-bound booklet. Text with diagrams by RZC. Derivation of Total Energy law with no Einstein symmetry. Elementary Permebasin Mechanics. Oct. 2015 978-0-473-34092-6$260.00
A Proof of Euclid's Fifth Axiom Using Concepts of Elementary Calculus 16-page A4 booklet. Text with diagrams by RZC.
PDF free to view here.
Feb. 2015 978-0-473-31671-6$7.50
Our Permebasin and the Conservationist's Duty A cartoon in narrative sytle. Text by RZC. Illustrations by Biggles. Jan. 2014 978-0-473-27211-1$9.00
Russell's Paradox - Two Sets RZC's definitive solution to the paradox from 1901. Paperback 180x230mm. 186 pages. Mar. 2012 978-0-473-20648-2$125.00
Russell's Paradox - a Solution for the Longer Haul RZC's solution as of its first printing. Paperback 190x230mm. 190 pages. Superseded by Russell's Paradox - Two Sets Aug. 2010 978-0-473-17427-9$125.00

Proviso in Regards to Distribution or Selling

We hold to a certain position in relation to indemnity clauses in contracts. Such clauses traditionally adhere to contracts involving antiquities and valuable artworks wherein a person responsible for the safety of such goods seeks indemnity from a person setting out to borrow. The websites of online vendors are not fragile in the same way nor do they have the same kind of value. The indemnity clause in a website usage contract may rather appear to be a statement of the lack of goodwill more than anything else. If merchants can have no faith in the law, then society is in a very bad shape. We cannot agree to any knee-jerk indemnity.

INET communications © 2008       Christensen © 2011