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Algebraic Number Fields
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NumberFieldRootsOfUnity
RootReduce
Cyclotomic
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Algebraic Number Theory
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RootOfUnityQ
RootOfUnityQ
[
a
]
yields
True
if
a
is a root of unity, and yields
False
otherwise.
MORE INFORMATION
An algebraic number
a
is a root of unity if
a
n
=1
for some integer
n
.
EXAMPLES
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Basic Examples
(1)
In[1]:=
Out[1]=
In[2]:=
Out[2]=
Scope
(5)
Properties & Relations
(4)
Possible Issues
(1)
SEE ALSO
NumberFieldRootsOfUnity
RootReduce
Cyclotomic
MinimalPolynomial
TUTORIALS
Algebraic Number Fields
MORE ABOUT
Algebraic Number Theory
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© 2008 Wolfram Research, Inc.
EXAMPLES
Basic Examples 
Scope 