period start

• CURIE: gmeow:periodStart
• IRI: https://blackcatinformatics.ca/gmeow/periodStart
• Category: property
• Defined by: gmeow:slices/temporal
• Box roles: RBox role (What is this?)

The instant at which a named period begins. Functional nature removed because the property chain below makes periodStart non-simple, and OWL 2 DL forbids non-simple properties in functional axioms (Principle 8). Closed-world single-valuedness lives in SHACL (NamedPeriodShape).

Structure

Property shape: object property; gmeow:NamedPeriod -> gmeow:Instant

Practical Pattern

Use gmeow:periodStart from gmeow:NamedPeriod to gmeow:Instant when the relationship itself belongs in the native GMEOW graph.

Common Companion Terms

gmeow:NamedPeriod, gmeow:Instant

External Equivalences

Equivalent or closely aligned targets: time

Linkages

Generated from the canonical mapping DSL. SSSOM files are the generated public interchange form for term equivalences.

Term Equivalences

Usage Advice

Use when

• Use to state the start boundary of a gmeow:NamedPeriod as a gmeow:Instant, or let it be inferred from a gmeow:hasTemporalMeasurement whose gmeow:measuredDate is an Instant via the property chain.

Avoid when

• Avoid asserting it as functional in OWL (the chain makes it non-simple, P8 — single-valuedness is a SHACL concern) and avoid pointing it at an age measurement (gmeow:measuredAge needs solver-layer conversion, P12).

How to use

• Either assert a gmeow:Instant directly, or attach a gmeow:TemporalMeasurement with a gmeow:measuredDate and let the propertyChainAxiom derive the start; the NamedPeriodShape enforces a single value at validation time.

Examples

• ex:holocene gmeow:periodStart ex:holoceneStartInstant.