An Algebraic Representation of Calendars

Peng Ning, X. Sean Wang, and Sushil Jajodia

This extended abstract uses an algebraic approach to define granularities and calendars. All the granularities in a calendar are expressed as algebraic expressions based on a single "bottom" granularity. The operations used in the algebra directly reflect the ways with which people construct new granularities from existing ones, and hence yield more natural and compact granularities definitions. The extended abstract also presents granule conversions between granularities in a calendar.

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