This presentation describes the Top level Ontology (TLO) that is being developed for the Information Management framework (IMF). It starts with a brief outline of how the TLO emerged from the work on the IMF. It notes the initial focus on providing a foundation for Euclidean standards. It touches on the foundation - the core constructional ontology - built from a unified constructor theory with three elements: set, sum and tuple constructors. It then looks at the data components of the TLO and how these are used to build four-dimensional space time: taking in mereotopology, chronology and worldlines.
Presentation Structure:

• Introducing the IMF Team
• Background
  • Information Management Framework
  • Choice-based framework
• TLO Initial Use
• Situating the TLO in the IMF
• Data Section: Core Constructional Ontology
• Data Section: Top Level Ontology