Level 0
Meta
meta
Justification
What has been written down.
Six fields are required of every node. Empty ones are shown as declared gaps — a gap means nothing has been written, not that there is nothing to write.
Definition
CommentFormal organisation-of-knowledge structures - ontologies, top-level categories, representation standards and metadata or provenance systems - that define and relate concepts across domains to enable interoperability, retrieval, integration and analysis.
Inclusion
Comment- ontologies, taxonomies and controlled vocabularies
- metadata and provenance schemes
- standards for semantic representation and exchange
- top-level categories and mapping frameworks that mediate across domains
Exclusion
Comment- causal mechanisms in real systems — lens mechanism
- the empirical variables themselves — lens measurement
- domain-specific institutional structures — goes to political
Sources
Comment- ISO/IEC 21838-1, Information technology - Top-level ontologies. · Provides an institutional definition of meta-level artefacts as domain-neutral ontologies enabling interoperability.
Boundary cases
CommentDeclared gap No boundary cases have been recorded.
Uncertainty
Comment- This is a domain of representations rather than of the world, so every other domain has a meta shadow. That may mean it does not belong among the nine as a sibling. The atlas is itself a meta artefact, so this domain contains the thing that contains it.
Rules
Whether this division survives the six rules.
Rules 1, 5 and 6 are checked by the validator and reported here. Rules 2, 3 and 4 are judgements about meaning and cannot be automated — no state is claimed for them. The rules themselves are set out in the method.
At most seven
Not applicable. This node is not a division.
Mutually exclusive
A judgement about whether the parts overlap. Not automated.
Collectively exhaustive
A judgement about what the parts leave out. Not automated.
Equal abstraction
A judgement about whether the parts answer the same question type. Not automated.
Decomposable or terminal
No children and not marked terminal — unfinished, rather than an endpoint.
Justified in writing
5 of the six fields carry content. The rest are declared gaps.
Proposals
What has been argued about this node.
Nothing has been decided against this node. That is not the same as nothing being wrong with it.
Discussion
What has been said about this node.
Nothing published on this node yet.