Spinors Extras
Package Symbol
DeclarePlusMinusOne
UndeclarePlusMinusOne
SpM
PolVec
PossiblePolQ
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SpinorsExtras
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PlusMinusOneQ
PlusMinusOneQ[
x
]
returns
True
if
x
represents
+1
or
-1
.
MORE INFORMATION
It is used internally to check whether something represents possible sign of spin projection.
EXAMPLES
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Basic Examples
(1)
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Properties & Relations
(2)
PlusMinusOneQ
is used to test whether massive spinor label (
SpM
) for given mass sign labels LVector:
PlusMinusOneQ
is used to test whether polarization vector (
PolVec
) for given polarization represents massless Spinor:
SEE ALSO
DeclarePlusMinusOne
UndeclarePlusMinusOne
SpM
PolVec
PossiblePolQ
MORE ABOUT
SpinorsExtras
EXAMPLES
Basic Examples 
Properties & Relations 