Bug: symbol recreates itself suddenly
- To: mathgroup at smc.vnet.net
- Subject: [mg86686] Bug: symbol recreates itself suddenly
- From: "Severin Posta" <severin at km1.fjfi.cvut.cz>
- Date: Tue, 18 Mar 2008 04:50:49 -0500 (EST)
- Organization: Czech Technical University
It seems to me that after Remove[symbol] some times the symbol is
"recreated" without notice. Consider the following example.
How to repeat:
In[1]:= $Version
Out[1]= "6.0 for Microsoft Windows (32-bit) (April 20, 2007)"
In[2]:= Unprotect[E]; ClearAttributes[E, {Constant, Protected,
ReadProtected}]; Remove[E];
In[4]:= ?E
During evaluation of In[4]:= Information::notfound: Symbol E not \ found. >>
In[5]:= Solve[E == 2]
Out[5]= {{Global`E -> 2}}
(* ?! *)
In[6]:= ?E
E is the exponential constant e (base of natural logarithms), with \
numerical value \[TildeEqual]2.71828. >>
(* THIS IS NOT CORRECT ANSWER *)
Severin Posta