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DiscreteDelta
DiscreteDelta
[
n
1
,
n
2
,
...
]
gives the discrete delta function
(
n
1
,
n
2
,
...
)
, equal to
1
if all the
n
i
are zero, and
0
otherwise.
MORE INFORMATION
DiscreteDelta
[0]
gives
1
;
DiscreteDelta
[
n
]
gives
0
for other numeric
n
.
DiscreteDelta
has attribute
Orderless
.
EXAMPLES
CLOSE ALL
Basic Examples
(2)
In[1]:=
Out[1]=
Use in sums:
In[1]:=
Out[1]=
Scope
(4)
Applications
(3)
Properties & Relations
(2)
Possible Issues
(2)
SEE ALSO
IdentityMatrix
UnitStep
If
Boole
Signature
DiracDelta
KroneckerDelta
HeavisideTheta
TUTORIALS
Generalized Functions and Related Objects
RELATED LINKS
MathWorld
The Wolfram Functions Site
MORE ABOUT
Discrete Mathematics
New in 4
© 2008 Wolfram Research, Inc.
(n1, n2, ...), equal to 1 if all the ni are zero, and 0 otherwise.
EXAMPLES
Basic Examples 
Scope 