# Relation

> This node covers the relation concept on the ontology axis. Its mathematical type is graph.

Record: `reasoning:node-ont-relation`
Kind: node
Canonical: https://banes-lab.com/ontology/reasoning#reasoning-node-ont-relation

Listed in [Reasoning records](https://banes-lab.com/api/records/reasoning.md), after [Structure](https://banes-lab.com/records/reasoning/node-ont-structure.md) and before [Space](https://banes-lab.com/records/reasoning/node-ont-space.md).

## Axis

- [ontology](https://banes-lab.com/records/reasoning/axis-ontology.md)

## Concept

- [relation](https://banes-lab.com/records/reasoning/dimension-relation.md)

## Math type

- [graph](https://banes-lab.com/records/reasoning/math-type-graph.md)

## Linked from

- [Resolving a message](https://banes-lab.com/disciplined-methodology/start/resolving-a-message.md)
- [Coverage is derived](https://banes-lab.com/disciplined-methodology/verify/coverage-is-derived.md)
- [The axes](https://banes-lab.com/ontology/reasoning/the-axes.md)