# Absence

> What is absent, and is it distinguished from unknown, omitted and zero?

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

Listed in [Reasoning records](https://banes-lab.com/api/records/reasoning.md), after [Emergence](https://banes-lab.com/records/reasoning/node-for-creation.md) and before [Objective](https://banes-lab.com/records/reasoning/node-tel-objective.md).

## Axis

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

## Grounded by

- [SLOT](https://banes-lab.com/records/pag/keyword-node-slot.md)

## Math type

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

## Linked from

- [The axes](https://banes-lab.com/ontology/reasoning/the-axes.md)
- [node](https://banes-lab.com/ontology/grammar/pag-keywords-node.md)