# core/predicates/math.predicate.ts

> 4 lines of code and 1 definition.

Tree: GovLab Patterns
Language: typescript
Layer: infrastructure
Canonical: https://banes-lab.com/anatomy/patterns#file-patterns-core-predicates-math-predicate-ts
Source text: https://banes-lab.com/source/patterns/core/predicates/math.predicate.ts.txt

Listed in [core/predicates](https://banes-lab.com/api/source/patterns/core/predicates.md), after [core/predicates/axis.predicate.ts](https://banes-lab.com/source/patterns/core/predicates/axis.predicate.ts.md) and before [core/predicates/record.predicate.ts](https://banes-lab.com/source/patterns/core/predicates/record.predicate.ts.md).

## Definitions

- `isMathType` (lexical_declaration, line 3, exported)

## Contained in

- [core/predicates](https://banes-lab.com/anatomy/patterns/folder-patterns-core-predicates.md)

## Source

```typescript
import { MATH_TYPES } from "#configuration/constants/math.constants";

export const isMathType = function isMathType(value: string): boolean {
    return MATH_TYPES.has(value);
};
```