BFO-2020

Basic Formal Ontology (BFO) 2020

This is the homepage for a repository of BFO 2020 supporting artifacts as specified in ISO 21838-2020.

A set of documents that provide guidance to the links among the supporting artifacts are found here BFO 21838-2 Guidance Documents These guidance documents include:

The formalization of BFO 2020 is sub-divided into modules of axioms. These modules are: continuant mereology, existence instantiation, generic dependence, history, material entity, occurrent mereology, order, participation, spatial, spatio-temporal, specific dependency, temporal region, temporalized relations and universal declaration.

Serializations of these axioms by module are provided in three formats: Common Logic, First-order Logic and Prover 9

The model used to prove the consistency of the Common Logic formalization of BFO 2020 is provided in Common Logic Interchange format, Prover 9 format and Clausetester format.

Files for BFO 2020 are available in both Functional-style bfo-2020.ofn and RDF/XML bfo-2020.owl. An RDF/XML format of BFO 2020 without the temporalized object properties which corresponds to ISO/IEC:21838-2 A.1.2 is available here bfo-2020-without-some-all-times.owl . A Functional-style version of BFO 2020 in which the IRIs are replaced with the corresponding labels to make it more readable is available here bfo-2020-labeled.ofn .