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AcknowledgementsAcknowledgements

This book has been made possible through Portland Community College's Strategic Investment Funding. Without significant funding to provide the authors with the adequate time, an ambitious project such as this one would not be possible. We sincerely appreciate the support of PCC's Budget Planning Advisory Council and the Board of Directors.

The technology that makes it possible to create synced print, eBook, and WeBWorK content is PreTeXt, created by Rob Beezer. Additionally, David Farmer and the American Institute of Mathematics provide significant support to keep the PreTeXt eBook layout simple yet highly functional. An important grant from OpenOregon funded the original bridge between WeBWorK and PreTeXt.

This book relies on other open-source technologies beyond PreTeXt. The open-source online homework platform WeBWorK, created by Mike Gage and Arnie Pizer, provides most of the exercises in ORCCA. The javascript library MathJax, created and maintained by David Cervone, Volker Sorge, Christian Lawson-Perfect, and Peter Krautzberger allows math content to render nicely on screen. The typesetting software , created by Donald Knuth and enhanced by Leslie Lamport, is essential for creating the PDF for the print edition.

Each of these open technologies, along with many that we use but have not listed here, has been enhanced by many additional contributors spanning the past 40 years. We are grateful for all of these contributions.