Declare (comment), operators (Q)
- To: mathgroup at yoda.physics.unc.edu
- Subject: Declare (comment), operators (Q)
- From: "Hamburger Dani" <dani at zernike.fh.huji.ac.il>
- Date: Wed, 30 Mar 1994 13:59:46 +0000
A warning about using Declare.m:
while very useful most of the time, it somehow interferes with the
Algebra`SymbolicSum` package (at least in our MMa 2.2 version). For example,
with Declare:
In[1]:=<<Algebra`SymbolicSum`
In[2]:=Sum[k^2, {k, 1, n}]]
2
Out[2]= Sum[k , {k, 1, n}]
without Declare:
In[1]:=<<Algebra`SymbolicSum`
In[2]:=Sum[k^2, {k, 1, n}]]
n (1 + n) (1 + 2 n)
Out[2]= -------------------
6
Question:
how does one implement the operator (x d/dx)^k ?
Thanks,
--
Daniel
Fritz Haber Center for Molecular Dynamics
Hebrew University of Jerusalem