GrassmannCalculus`
DeclareVectorSymbols  |
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Details and Options
Examples
(1)
Basic Examples
(1)
In[1]:=
<<GrassmannCalculus`
In[2]:=
savePreferences=
;SetPreferences["GrassmannPlane","Vector"]
 | AllPreferences |
The current scalars are the default ones for the GrassmannPlane coordinate system. There are no extra vectors besides the default.
In[3]:=
 | ★v |
Out[3]=
dx,dy,,
e
x
e
y
Now we add some more with .
DeclareExtraVectorSymbols
In[4]:=
| ★★V |
 | ★v |
Out[4]=
dx,dy,u,v,w,,
e
x
e
y
Now we establish a new set of vector symbols. The previous vector symbols are eliminated and the new ones are combined with the default vectors.
In[5]:=
| DeclareVectorSymbols |
| ★v |
Out[5]=
dx,dy,,,,
e
x
e
y
Here we establish the book default preferences. This gives the default book vectors.
In[6]:=
DeclareBookDefault;
| ★v |
Out[6]=
{p,q,r,s,t,u,v,w,x,y,z}
The following declares a replacement set using individual items and list structures. Duplicates are eliminated. Notice that with book preferences the default vectors can be overridden. With coordinate systems they cannot be overridden.
In[7]:=
| DeclareVectorSymbols |
| ★v |
Out[7]=
{α,β,γ,δ,ϵ}
In[8]:=
| RestorePreferences |
""