OpenMath Content Dictionary: metasig

Canonical URL:
http://www.openmath.org/cd/metasig.ocd
CD File:
metasig.ocd
CD as XML Encoded OpenMath:
metasig.omcd
Defines:
CDSComment, CDSignatures, CDSReviewDate, CDSStatus, Signature
Date:
2001-03-12
Version:
2
Review Date:
2003-04-01
Status:
official

This is a content dictionary to represent Content Dictionary Signature Files, so that they may be encoded as OpenMath Objects, which is a possible way of passing this information between OpenMath Applications.

1999-05-04 First Draft. David Carlisle

CDSignatures

This symbol is used to represent the outermost element of the Signature File which is characterized by two required attributes that identify the type system and the Content Dictionary whose signatures are defined. The value of the XML attribute 'type' is the name of the Content Dictionary or of the CDGroup that represents the type system. The value of the XML attribute 'cd' is the name of the Content Dictionary whose symbols are assigned signatures in this Signature File. It has an arbitrary number of arguments which may be elements of type corresponding to the other symbols defined in this file.

Signatures:
sts


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CDSComment

This symbol is used to represent the element of a signature file which explains some aspect of that signature file. It should have one string argument which makes that explanation.

Signatures:
sts


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CDSReviewDate

This symbol is used to represent the element of a signature file which specifies the earliest possible revision date of the signature file. It should have one string argument which specifies that date. The date should be in the format YYYY-MM-DD, e.g. 2000-02-29.

Signatures:
sts


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CDSStatus

This symbol is used to represent the element of a signature file which specifies the status of that signature file. It should have one string argument, which should be one of 'official' (approved by the OpenMath Society according to the procedure outlined in the OpenMath standard), 'experimental' (currently being tested), 'private' (used by a private group of OpenMath users) or 'obsolete' (an obsolete signature file, kept only for archival purposes).

Signatures:
sts


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Signature

This symbol is used to represent the element of a signature file which specifies the signature of a symbol. It should take two string children, the first should be the symbol who's signature is being specified, the second should be an 'OMOBJ' element which specifies the signature. Additionally the second argument should specify an object which must represent a valid type in the type system identified by the XML attribute 'type' corresponding to the element which corresponds to the symbol 'CDSignatures' enclosing this symbol.

Signatures:
sts


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