# Slot: equation_type 


_How to interpret ``equation.rhs`` when advancing this state: 'differential' (default) integrates it as ``dx/dt = rhs``; 'algebraic' is a constraint ``0 = rhs`` / ``x ~ rhs`` (DAE); 'recurrence' is a discrete per-step update ``x_next = rhs`` (no integrator applied), used by an observation's auxiliary ``dynamics`` for online reductions/accumulators (e.g. a running sum ``x_next = x + f``) — the symbolic, backend-independent sibling of the continuous 'differential' form. Algebraic equations are used by ModelingToolkit.jl backend._



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URI: [tvbo:slot/equation_type](https://w3id.org/tvbo/slot/equation_type)
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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 | [xsd:string](http://www.w3.org/2001/XMLSchema#string) |
| Domain Of | [StateVariable](../classes/StateVariable.qmd) |

### Cardinality and Requirements

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

| Property | Value |
| --- | --- |
| If Absent | `string(differential)` |
| Owner | [StateVariable](../classes/StateVariable.qmd) |












## Identifier and Mapping Information





### Schema Source


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




## Mappings

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




## LinkML Source

<details>
```yaml
name: equation_type
description: 'How to interpret ``equation.rhs`` when advancing this state: ''differential''
  (default) integrates it as ``dx/dt = rhs``; ''algebraic'' is a constraint ``0 =
  rhs`` / ``x ~ rhs`` (DAE); ''recurrence'' is a discrete per-step update ``x_next
  = rhs`` (no integrator applied), used by an observation''s auxiliary ``dynamics``
  for online reductions/accumulators (e.g. a running sum ``x_next = x + f``) — the
  symbolic, backend-independent sibling of the continuous ''differential'' form. Algebraic
  equations are used by ModelingToolkit.jl backend.'
from_schema: https://w3id.org/tvbo
rank: 1000
ifabsent: string(differential)
owner: StateVariable
domain_of:
- StateVariable
range: string

```
</details></div>