Function reference · Math
delta
Represents the Dirac delta distribution.
For non-zero numeric inputs, delta evaluates to zero. At zero it remains symbolic because the Dirac delta is a distribution rather than an ordinary finite-valued function.
Symbolic inputs remain as delta(x), and assumptions can reduce a symbol known to be non-zero to zero.
Examples
These examples use Nerdamer Notation.
A non-zero numeric argument evaluates to zero.
delta(5) // → 0
Keep the singular point symbolic.
delta(0)Interfaces
The same operation is available through the interfaces below.
Nerdamer Notation
Use this form inside input passed to nerdamer(...).
delta(arg1)nerdamer.delta
Call the operation through the default nerdamer import.
nerdamer.delta(x: Expression): ExpressionParameters
| Name | Type | Description |
|---|---|---|
x | Expression | The input expression. |
Returns
Expression — The Dirac delta value or symbolic node.