OpenIntro LaTeX, code, and PDFs are released under a Creative Commons BY-SA 3.0 license unless noted in the Exceptions. Any materials reposted online must include a visible link to an appropriate OpenIntro page.

Some files are downloaded in a zip directory and include a Read Me file. Adhering to the guidelines in this file ensures the attribution component of the license is fulfilled. Derivative works should also be clearly licensed under the Creative Commons BY-SA 3.0 license, e.g. by linking to the CC license, so that others may continue to benefit from sharing.

OpenIntro is a registered trademark. Derivative works of OpenIntro resources, including unofficial prints of OpenIntro textbooks, cannot be branded or titled in a way that suggests the derivative work is an OpenIntro product or is endorsed by OpenIntro. For example, an unofficially printed copy of an OpenIntro textbook cannot use "OpenIntro" in the title, and it must use a different title from the original textbook to ensure there is no confusion with the official version.

Reposting an unedited electronic version of an OpenIntro file, e.g. a textbook PDF, may be listed as an official version and use the corresponding textbook title. Please ensure a link to the original site remains visible to fulfill the Attribution component of the license.

If you would like for a derivative work to be branded as an OpenIntro resource (e.g. if the derivative is a translation), please contact us.

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Some files are subject to an alternative license, e.g. student projects. Such materials are clearly labeled on the webpage leading to the corresponding resource.

Some materials, such as lecture slides, may contain images that are used under an alternative license or under fair use.

Website and branding elements, such as the OpenIntro logo and website design, are also exceptions. OpenIntro is a registered trademark.

Have questions? Contact us.

We are exploring the possibility of offering a waiver on the ShareAlike clause for materials used for private training within a company.

If you would like to weigh in on these considerations, please see our draft waiver and contact us.