GrassmannCalculus`
UserScalarSymbols (★★s)  |
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Details and Options
Examples
(1)
Basic Examples
(1)
In[1]:=
<<GrassmannCalculus`
Set the Grassmann plane.
In[2]:=
 | SetActiveSpacePreferences |
 | PublicGrassmannAtlas |
The user , , and combined are:
ScalarSymbols
GrassmannCoordinates
ScalarCoordinates
In[3]:=
★★s
 | GrassmannCoordinates |
| ★s |
Out[3]=
{a,b,c,d}
Out[3]=
{x,y}
Out[3]=
{a,b,c,d,x,y}
The following clears the leaving only the coordinates on the list of .
UserScalarSymbols
ScalarSymbols
In[4]:=
DeclareUserScalarSymbols[{}]★★s
| ★s |
Out[4]=
{}
Out[4]=
{x,y}
Set a coordinate system.
In[5]:=
| SetActiveSpacePreferences |
| PublicGrassmannAtlas |
Declare a set of user scalars. These may be entered with or without List brackets.
In[6]:=
DeclareUserScalarSymbols[,,]UserScalarSymbolsScalarSymbols
Out[6]=
{,,}
Out[6]=
{x,y,z,,,}
Add some extra symbols using the shortcut for .
DeclareExtraScalarSymbols
In[7]:=
| ★★S |
Out[7]=
{a,b,c,d,,}
Out[7]=
{a,b,c,d,x,y,z,,}
If we expect to come back to this we can save it.
CurrentGrassmannAssociation
In[8]:=
saveAssociation=CurrentGrassmannAssociation;
Each Grassmann Association comes with its own set of user scalar symbols. Any previously changed symbols will be lost. Now set a different Grassmann Association.
In[9]:=
| SetActiveSpacePreferences |
| PublicGrassmannAtlas |
Out[9]=
{a,b,c,d}
Out[9]=
{a,b,c,d,x,y,z}
We can restore the previous system with its symbols using:
In[10]:=
| SetActiveSpacePreferences |
Out[10]=
{,,,,}
Out[10]=
{x,y,z,,,,,}
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