Re: Re: error with Sum and Infinity
- To: mathgroup at smc.vnet.net
- Subject: [mg102464] Re: [mg102437] Re: error with Sum and Infinity
- From: DrMajorBob <btreat1 at austin.rr.com>
- Date: Mon, 10 Aug 2009 04:15:06 -0400 (EDT)
- References: <h5bk64$hlm$1@smc.vnet.net> <200908070932.FAA15211@smc.vnet.net>
- Reply-to: drmajorbob at bigfoot.com
> Options[Sum] returns {} On the plus side, searching via ? *Sum* > reveals the presence of Global`SymbolicSumThreshold but with no > information on it. It's odd that ?*Sum* would reveal this thing, since ?SymbolicSumThreshold and ?"SymbolicSumThreshold" do not. In fact, at my machine, ?*Sum* does NOT reveal it. $Version "7.0 for Mac OS X x86 (64-bit) (February 19, 2009)" > 2. I assume you are implicitly agreeing with me that it is > unsatisfactory to require any user to guess at the existence, name, and > effect of an undocumented global flag. But you can't bring yourself to > say so. Actually, I doubt he agrees at all. Bobby On Sun, 09 Aug 2009 05:06:32 -0500, Richard Fateman <fateman at cs.berkeley.edu> wrote: > Andrzej Kozlowski wrote: >> On 8 Aug 2009, at 02:16, Richard Fateman wrote: >> >> <attempt at humor snipped> >> >> he or she can >> always evaluate >> >> "SymbolicSumThreshold" /. SystemOptions[] >> 1000000 >> >> which, I think, deals with the rest of your post. >> >> Andrzej > > I assumed there was some name for that magic number, and now you tell me > this is the name. Thanks. > > 1. In the Alphabetical List of functions and other objects in > Mathematica, available as guide/AlphabeticalListing in the online manual > for version 6.0, there is no appearance of SymbolicSumThreshold. > Options[Sum] returns {} On the plus side, searching via ? *Sum* > reveals the presence of Global`SymbolicSumThreshold but with no > information on it. > > 2. I assume you are implicitly agreeing with me that it is > unsatisfactory to require any user to guess at the existence, name, and > effect of an undocumented global flag. But you can't bring yourself to > say so. > > > RJF > -- DrMajorBob at bigfoot.com
- References:
- Re: error with Sum and Infinity
- From: Richard Fateman <fateman@cs.berkeley.edu>
- Re: error with Sum and Infinity