# Slot: evict_equation 


_Optional reverse recurrence for a **sliding-window** reduction: the per-step downdate that removes the sample leaving the window, the inverse of ``equation`` (which folds an arriving sample in). Only meaningful when ``equation_type: recurrence`` on an observation's auxiliary ``dynamics``. When present, the observer is a windowed reduction — its state is maintained by ``equation`` (add) and ``evict_equation`` (evict) and rebuilt exactly from the window on resync — rather than a cumulative accumulator over the whole trajectory (``equation`` alone). Absent for ordinary state variables and cumulative reductions._



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URI: [tvbo:slot/evict_equation](https://w3id.org/tvbo/slot/evict_equation)
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## Applicable Classes

| Name | Description | Modifies Slot |
| --- | --- | --- |
| [StateVariable](../classes/StateVariable.qmd) |  |  no  |
| [FieldStateVariable](../classes/FieldStateVariable.qmd) |  |  no  |






## Properties

### Type and Range

| Property | Value |
| --- | --- |
| Range | [Equation](../classes/Equation.qmd) |
| Domain Of | [StateVariable](../classes/StateVariable.qmd) |

### Cardinality and Requirements

| Property | Value |
| --- | --- |
### Slot Characteristics

| Property | Value |
| --- | --- |
| Owner | [StateVariable](../classes/StateVariable.qmd) |












## Identifier and Mapping Information





### Schema Source


* from schema: https://w3id.org/tvbo




## Mappings

| Mapping Type | Mapped Value |
| ---  | ---  |
| self | tvbo:evict_equation |
| native | tvbo:evict_equation |




## LinkML Source

<details>
```yaml
name: evict_equation
description: 'Optional reverse recurrence for a **sliding-window** reduction: the
  per-step downdate that removes the sample leaving the window, the inverse of ``equation``
  (which folds an arriving sample in). Only meaningful when ``equation_type: recurrence``
  on an observation''s auxiliary ``dynamics``. When present, the observer is a windowed
  reduction — its state is maintained by ``equation`` (add) and ``evict_equation``
  (evict) and rebuilt exactly from the window on resync — rather than a cumulative
  accumulator over the whole trajectory (``equation`` alone). Absent for ordinary
  state variables and cumulative reductions.'
from_schema: https://w3id.org/tvbo
rank: 1000
owner: StateVariable
domain_of:
- StateVariable
range: Equation

```
</details></div>