# Category:Test Functions

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This category contains results about **Test Functions**.

Definitions specific to this category can be found in Definitions/Test Functions.

Let $\phi : \R^d \to \C$ be a complex-valued function.

Let $K \subseteq \R^d$ be a compact subset.

Let $K$ be the support of $\phi$:

- $\map \supp \phi = K$

Let $\phi$ be a smooth function across $K$ with respect to all its variables.

Then $\phi$ is known as a **test function**.

## Subcategories

This category has the following 3 subcategories, out of 3 total.

## Pages in category "Test Functions"

The following 3 pages are in this category, out of 3 total.