Basic Examples 
(3)
 

Construct an antidiagonal matrix:
In[92]:=
[◼]
AntidiagonalMatrix
[{a,b,c}]//MatrixForm
Out[92]//MatrixForm=
0
0
a
0
b
0
c
0
0
A super-antidiagonal matrix:
In[95]:=
[◼]
AntidiagonalMatrix
[{a,b},1]//MatrixForm
Out[95]//MatrixForm=
0
a
0
b
0
0
0
0
0
A sub-antidiagonal matrix:
In[94]:=
[◼]
AntidiagonalMatrix
[{a,b},-1]//MatrixForm
Out[94]//MatrixForm=
0
0
0
0
0
a
0
b
0

Scope 
(4)
 


Applications 
(3)
 


Properties and Relations 
(1)
 
