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Re: [Axiom-math] What is the "+/" operator?
From: |
Gabriel Dos Reis |
Subject: |
Re: [Axiom-math] What is the "+/" operator? |
Date: |
23 May 2007 18:23:45 -0500 |
Ralf Hemmecke <address@hidden> writes:
| On 05/23/2007 06:50 PM, Bill Page wrote:
| > Quoting Martin Rubey <address@hidden>:
| >
| >> ... Igor Khavkine writes:
| >>
| >>> Can someone explain this syntax? Looking at the Axiom .spad files,
| >>> I see that it has general usage +/[...some list construction...].
| >>
| >> It is old syntax for reduce and should go away.
|
| I very much agree. The reason is that one should give an initial value
| otherwise you might be surprised.
I don't see why there should be a surprise.
Reduction through "/" is a functional on monoid operations, so one
should expect to give a unit element.
reduce on the other hand would want an initial value, or a value to
return when the list of operand is empty.
-- Gaby
- [Axiom-math] What is the "+/" operator?, Igor Khavkine, 2007/05/23
- Re: [Axiom-math] What is the "+/" operator?, Martin Rubey, 2007/05/23
- Re: [Axiom-math] What is the "+/" operator?, Bill Page, 2007/05/23
- Re: [Axiom-math] What is the "+/" operator?, Ralf Hemmecke, 2007/05/23
- Re: [Axiom-math] What is the "+/" operator?, Bill Page, 2007/05/23
- Re: [Axiom-math] What is the "+/" operator?,
Gabriel Dos Reis <=
- Re: [Axiom-math] What is the "+/" operator?, Ralf Hemmecke, 2007/05/23
- Re: [Axiom-math] What is the "+/" operator?, Gabriel Dos Reis, 2007/05/23
- Re: [Axiom-math] What is the "+/" operator?, Ralf Hemmecke, 2007/05/24
- Re: [Axiom-math] What is the "+/" operator?, Gabriel Dos Reis, 2007/05/24
- Re: [Axiom-math] What is the "+/" operator?, Gabriel Dos Reis, 2007/05/23
Re: [Axiom-math] What is the "+/" operator?, Gabriel Dos Reis, 2007/05/23