OpenMath Content Dictionaries
A content dictionary is the declaration of a collection of symbols, their names,
descriptions, and rules. A published CD allows multiple parties to “speak the same
OpenMath language”. An example of CD is setname1 which
indicates the semantics of such symbols such as the set of natural numbers.
CDs are grouped in CD-groups. For example, the MathML CD group
collects the ‘core CDs’, all content-dictionaries described in the OpenMath standard
deemed compatible with the MathML3 Recommendation
- CD Groups: A list of all 20 Content Dictionary Groups available on this server.
- All CDs by Name: A list of all 214 Content Dictionaries (including contributed Dictionaries).
- Index of all Symbols: A list of all 1573 symbols defined in any Content Dictionary (including contributed Dictionaries).
- Git Repository: A github hosted repository, you can browse the files online, download a zip file to your local machine, or clone the repository.
Tools to validatate Cd and other OpenMath related files are described in the validation page, including an online validation tool
If you have trouble expressing yourself in terms of the existing CDs, maybe others had
too, and you can find the answer in the OpenMath CDs FAQ