[GAP Forum] Forum Digest, Vol 82, Issue 1
zahra sheikhaleslami
zahra.sheikhaleslami at gmail.com
Thu Sep 16 09:38:32 BST 2010
hi
i find gap software
plese guid me to work with it
On 9/14/10, forum-request at gap-system.org <forum-request at gap-system.org> wrote:
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> Today's Topics:
>
> 1. Re: GAP mode for emacs (Attila Egri-Nagy)
> 2. Re: GAP mode for emacs (Ivan Andrus)
> 3. bad bags (Attila Egri-Nagy)
> 4. Re: bad bags (Alexander Konovalov)
> 5. Re: bad bags (Attila Egri-Nagy)
> 6. Lectureship at Heriot-Watt (Jim Howie)
> 7. question (Elaheh khamseh)
> 8. algorithmic algebraic topology (Ellis, Grahamj)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 24 Aug 2010 10:00:39 +0100
> From: Attila Egri-Nagy <A.Egri-Nagy at herts.ac.uk>
> Cc: forum at gap-system.org
> Subject: Re: [GAP Forum] GAP mode for emacs
> Message-ID:
> <AANLkTikkiK+bEHaMexa0kvfQh+ndBXxNmfpXRi4qTPcU at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hi,
>
> It is crazy but I've been using python-mode for gap files. It gets the
> comments and strings right, at least...
>
> attila
>
>
> On Tue, Aug 24, 2010 at 1:39 AM, Rafael <rvf0068 at gmail.com> wrote:
>
>> Ivan Andrus <darthandrus at gmail.com>
>> writes:
>>
>> > I have been using gap-mode for emacs version 1.96 by Michael Smith.
>> > There are a few things that I would like to add, principally syntax
>> > highlighting. Has anyone else done this that I couldn't find? Would
>> > there be interest in an updated version with some improvements?
>>
>> This is what I use. It is really far from perfect, but it is something...
>>
>> (defun add-custom-keyw()
>> "adds a few special keywords for gap mode"
>> (font-lock-add-keywords nil
>> '(
>> ("\\bif\\b\\|then\\|else\\|elseif" . 'font-lock-keyword-face )
>> ("while\\|\\bdo\\b\\|\\bfi\\b" . 'font-lock-keyword-face )
>> ("\\bend\\b\\|return\\|\\bnot\\b\\|function\\|\\blocal\\b" .
>> 'font-lock-keyword-face )
>> ("\\bfor\\b\\|\\bin\\b\\|\\bod\\b\\|\\bmod\\b\\|\\band\\b" .
>> 'font-lock-keyword-face )
>> ("true\\|false" . 'font-lock-constant-face )
>> ("Print\\|Length\\|\\bOrbits\\b\\|Subsets\\|Difference" .
>> 'font-lock-function-name-face )
>> ("List\\|OnSets\\|Group\\|Intersection" .
>> 'font-lock-function-name-face )
>> ("IsTransitive\\|OnTuples\\|Concatenation\\|Filtered" .
>> 'font-lock-function-name-face )
>> ("Add\\|Sum\\|SymmetricGroup\\|Filtered\\|RightCosets" .
>> 'font-lock-function-name-face )
>> ("Eigenvalues\\|Rationals\\|" . 'font-lock-function-name-face )
>> ("\\bCharacteristicPolynomial\\b" . 'font-lock-function-name-face )
>> ("Filtered\\|RightCosets" . 'font-lock-function-name-face )
>> ("#.*" . font-lock-comment-face)
>> )))
>> (add-hook 'gap-mode-hook 'add-custom-keyw)
>>
>>
>> _______________________________________________
>> Forum mailing list
>> Forum at mail.gap-system.org
>> http://mail.gap-system.org/mailman/listinfo/forum
>>
>
>
> ------------------------------
>
> Message: 2
> Date: Tue, 24 Aug 2010 14:11:07 +0200
> From: Ivan Andrus <darthandrus at gmail.com>
> To: GAP Forum <forum at gap-system.org>
> Subject: Re: [GAP Forum] GAP mode for emacs
> Message-ID: <DE4AF286-DAC0-450D-9D25-E35CC7D7D263 at gmail.com>
> Content-Type: text/plain; charset=us-ascii
>
> Cool, thanks Rafael. I think I may create an improved gap-mode which
> includes this (or some derivative thereof, though it may take some time
> since I'm a bit busy right now.
>
> -Ivan
>
> On Aug 24, 2010, at 11:00 AM, Attila Egri-Nagy wrote:
>
>> Hi,
>>
>> It is crazy but I've been using python-mode for gap files. It gets the
>> comments and strings right, at least...
>>
>> attila
>>
>>
>> On Tue, Aug 24, 2010 at 1:39 AM, Rafael <rvf0068 at gmail.com> wrote:
>>
>>> Ivan Andrus <darthandrus at gmail.com>
>>> writes:
>>>
>>>> I have been using gap-mode for emacs version 1.96 by Michael Smith.
>>>> There are a few things that I would like to add, principally syntax
>>>> highlighting. Has anyone else done this that I couldn't find? Would
>>>> there be interest in an updated version with some improvements?
>>>
>>> This is what I use. It is really far from perfect, but it is something...
>>>
>>> (defun add-custom-keyw()
>>> "adds a few special keywords for gap mode"
>>> (font-lock-add-keywords nil
>>> '(
>>> ("\\bif\\b\\|then\\|else\\|elseif" . 'font-lock-keyword-face )
>>> ("while\\|\\bdo\\b\\|\\bfi\\b" . 'font-lock-keyword-face )
>>> ("\\bend\\b\\|return\\|\\bnot\\b\\|function\\|\\blocal\\b" .
>>> 'font-lock-keyword-face )
>>> ("\\bfor\\b\\|\\bin\\b\\|\\bod\\b\\|\\bmod\\b\\|\\band\\b" .
>>> 'font-lock-keyword-face )
>>> ("true\\|false" . 'font-lock-constant-face )
>>> ("Print\\|Length\\|\\bOrbits\\b\\|Subsets\\|Difference" .
>>> 'font-lock-function-name-face )
>>> ("List\\|OnSets\\|Group\\|Intersection" .
>>> 'font-lock-function-name-face )
>>> ("IsTransitive\\|OnTuples\\|Concatenation\\|Filtered" .
>>> 'font-lock-function-name-face )
>>> ("Add\\|Sum\\|SymmetricGroup\\|Filtered\\|RightCosets" .
>>> 'font-lock-function-name-face )
>>> ("Eigenvalues\\|Rationals\\|" . 'font-lock-function-name-face )
>>> ("\\bCharacteristicPolynomial\\b" . 'font-lock-function-name-face )
>>> ("Filtered\\|RightCosets" . 'font-lock-function-name-face )
>>> ("#.*" . font-lock-comment-face)
>>> )))
>>> (add-hook 'gap-mode-hook 'add-custom-keyw)
>>>
>>>
>>> _______________________________________________
>>> Forum mailing list
>>> Forum at mail.gap-system.org
>>> http://mail.gap-system.org/mailman/listinfo/forum
>>>
>> _______________________________________________
>> Forum mailing list
>> Forum at mail.gap-system.org
>> http://mail.gap-system.org/mailman/listinfo/forum
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 25 Aug 2010 19:03:23 +0100
> From: Attila Egri-Nagy <A.Egri-Nagy at herts.ac.uk>
> To: GAP Forum <forum at gap-system.org>
> Subject: [GAP Forum] bad bags
> Message-ID:
> <AANLkTikWpBu_D-b0j3nmEiG30uOZt39ffhhpo0emRy-B at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hello,
>
> We have been running large scale computation in GAP but sometimes we get
> warning messages like
>
> #W bad bag id 608 found, 0 saved
>
> and then execution stops. Clearly this message comes from the garbage
> collector, but what does it mean?
>
> Thanks!
>
> attila egri-nagy
>
>
> ------------------------------
>
> Message: 4
> Date: Sun, 29 Aug 2010 15:29:02 +0100
> From: Alexander Konovalov <alexk at mcs.st-andrews.ac.uk>
> To: Attila Egri-Nagy <A.Egri-Nagy at herts.ac.uk>
> Cc: GAP Forum <forum at gap-system.org>
> Subject: Re: [GAP Forum] bad bags
> Message-ID: <submission.1OpisC-0003GG-Sv at mail.cs.st-andrews.ac.uk>
> Content-Type: text/plain; charset=us-ascii
>
> Dear Attila,
>
> Are you attempting to save the workspace when this happens?
>
> The only line in the GAP kernel which may produce such message is in the
> saving workspace mechanism, and its meaning is explained in the
> documentation
> for SaveWorkspace (see ?SaveWorkspace in GAP):
>
> ===
> SaveWorkspace may sometimes produce warning messages, as in
>
> gap> SaveWorkspace("b5");
> #W bad bag id 4 found, 0 saved
> #W bad bag id 20 found, 0 saved
> true
>
> A small number of such messages can probably be ignored (they arise because
> the garbage collector may not always collect all dead objects, and dead
> objects
> may contain data that SaveWorkspace does not know how to process).
> ===
>
> Best wishes,
> Alexander
>
>
> On 25 Aug 2010, at 19:03, Attila Egri-Nagy wrote:
>
>> Hello,
>>
>> We have been running large scale computation in GAP but sometimes we get
>> warning messages like
>>
>> #W bad bag id 608 found, 0 saved
>>
>> and then execution stops. Clearly this message comes from the garbage
>> collector, but what does it mean?
>>
>> Thanks!
>>
>> attila egri-nagy
>> _______________________________________________
>> Forum mailing list
>> Forum at mail.gap-system.org
>> http://mail.gap-system.org/mailman/listinfo/forum
>
>
> --
> Dr. Alexander Konovalov School of Computer Science
> & Centre for Interdisciplinary Research in Computational Algebra
> University of St Andrews Tel +44/0 (1334) 461633
> http://www.cs.st-andrews.ac.uk/~alexk Fax +44/0 (1334) 463278
> The University of St Andrews is a charity registered in Scotland:No.SC013532
>
>
>
>
>
>
>
>
>
>
> ------------------------------
>
> Message: 5
> Date: Sun, 29 Aug 2010 20:13:24 +0200
> From: Attila Egri-Nagy <A.Egri-Nagy at herts.ac.uk>
> To: Alexander Konovalov <alexk at mcs.st-andrews.ac.uk>
> Cc: GAP Forum <forum at gap-system.org>
> Subject: Re: [GAP Forum] bad bags
> Message-ID:
> <AANLkTinfKP6HYFd9x82pMGvJotiGb7gO3kzFdO4On8r8 at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Dear Alexander,
>
> Yes, actually in our script we save workspaces at several stages. I
> checked it again and it turns out that we get this message when we run
> out of memory then the next command tries to save workspace. I guess
> that explains that.
>
> Thank you for your help and sorry for missing that documentation entry.
>
> best,
> attila
>
>
>
> On Sun, Aug 29, 2010 at 4:29 PM, Alexander Konovalov
> <alexk at mcs.st-andrews.ac.uk> wrote:
>> Dear Attila,
>>
>> Are you attempting to save the workspace when this happens?
>>
>> The only line in the GAP kernel which may produce such message is in the
>> saving workspace mechanism, and its meaning is explained in the
>> documentation
>> for SaveWorkspace (see ?SaveWorkspace in GAP):
>>
>> ===
>> SaveWorkspace may sometimes produce warning messages, as in
>>
>> gap> SaveWorkspace("b5");
>> #W bad bag id 4 found, 0 saved
>> #W bad bag id 20 found, 0 saved
>> true
>>
>> A small number of such messages can probably be ignored (they arise
>> because
>> the garbage collector may not always collect all dead objects, and dead
>> objects
>> may contain data that SaveWorkspace does not know how to process).
>> ===
>>
>> Best wishes,
>> Alexander
>>
>>
>> On 25 Aug 2010, at 19:03, Attila Egri-Nagy wrote:
>>
>>> Hello,
>>>
>>> We have been running large scale computation in GAP but sometimes we get
>>> warning messages like
>>>
>>> #W bad bag id 608 found, 0 saved
>>>
>>> and then execution stops. Clearly this message comes from the garbage
>>> collector, but what does it mean?
>>>
>>> Thanks!
>>>
>>> attila egri-nagy
>>> _______________________________________________
>>> Forum mailing list
>>> Forum at mail.gap-system.org
>>> http://mail.gap-system.org/mailman/listinfo/forum
>>
>>
>> --
>> Dr. Alexander Konovalov ? ? ? ? ? ? ? School of Computer Science
>> & Centre for Interdisciplinary Research in Computational Algebra
>> University of St Andrews ? ? ? ? ? ? ? ? Tel +44/0 (1334) 461633
>> http://www.cs.st-andrews.ac.uk/~alexk ? ?Fax +44/0 (1334) 463278
>> The University of St Andrews is a charity registered in
>> Scotland:No.SC013532
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
> ------------------------------
>
> Message: 6
> Date: Mon, 30 Aug 2010 09:08:27 +0100
> From: Jim Howie <J.Howie at ma.hw.ac.uk>
> To: forum at gap-system.org
> Subject: [GAP Forum] Lectureship at Heriot-Watt
> Message-ID: <4C7B66FB.4030408 at ma.hw.ac.uk>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Dear Colleague,
>
> Heriot-Watt University is advertising a lectureship in pure
> mathematics. I'd be grateful if you would pass this message on
> to anyone who may be interested.
>
> Thanks in advance,
>
> Jim Howie
> Head of Mathematics
> Heriot-Watt University
>
> --------------------------------------------------------
> Lectureship in Pure Mathematics - Ref 162/10/W
>
> Applications are invited for the post of Lecturer in Pure Mathematics.
> Candidates should have a strong track record in some branch of pure
> mathematics that will contribute to the dynamic mathematics research
> environment within the Maxwell Institute, and be able to engage in our
> undergraduate and postgraduate teaching programmes.
>
> The position is available from January 2011, or a mutually agreed date
> thereafter.
>
> Informal enquiries about this position may be made to the head of
> department, Professor Jim Howie (tel +44 (0) 131 451 3240, email
> J.Howie at hw.ac.uk)
>
> Ref 162/10/W
> Closing date: 30 September 2010
>
> Further details available at
>
> http://www.hw.ac.uk/hr/v_academic.php#16210
>
>
> --
> Heriot-Watt University is a Scottish charity
> registered under charity number SC000278.
>
>
>
>
> ------------------------------
>
> Message: 7
> Date: Mon, 13 Sep 2010 15:57:36 +0430
> From: Elaheh khamseh <elahehkhamseh at gmail.com>
> To: forum at gap-system.org
> Subject: [GAP Forum] question
> Message-ID:
> <AANLkTimzvj93KjmsU7fUnius4oKepEHG=n18LpzCq1kB at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Dears
>
> Let G be a semidirect product of a normal subgroup elementery abelian
> group of order p^4 and a cyclic group of order p. How can I copmute
> its Schur multiplier ?
>
>
> Do we have any information about the Schur multiplier of non-abelian
> p-groups of order p^5?
>
> Yours;
> E. Khamseh.
>
>
>
> ------------------------------
>
> Message: 8
> Date: Tue, 14 Sep 2010 18:01:49 +0100
> From: "Ellis, Grahamj" <graham.ellis at nuigalway.ie>
> To: "GAP Forum" <forum at gap-system.org>
> Subject: [GAP Forum] algorithmic algebraic topology
> Message-ID:
> <47C2E007B3E98F4E8BBC7997F007CE1308BC39DA at EVS1.ac.nuigalway.ie>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Dear Forum,
>
> I hope it's OK to use this forum to advertize the following call for papers
> on algorithmic and applied aspects of algebraic topology (including group
> theory).
>
> Graham
>
> School of Mathematics, Statistics and Applied Mathematics
> National University of Ireland, Galway
> http://hamilton.nuigalway.ie
>
>
>
>
> CALL FOR PAPERS
>
> APPLICABLE ALGEBRA IN ENGINEERING, COMMUNICATION AND COMPUTING
>
> SPECIAL ISSUE ON COMPUTER ALGEBRA IN ALGEBRAIC TOPOLOGY AND ITS APPLICATIONS
>
> Guest Editors:
> Graham Ellis, Eduardo S?enz-de-Cabez?n
>
> Algebraic Topology is an area of pure mathematics with deep algebraic,
> geometric and topological roots. Advances in computer science, particularly
> in
> symbolic computation and manipulation, have increased the computability of
> the concepts of algebraic topology to an extent that they are now
> increasingly
> finding real life applications in areas such as data analysis, dynamical
> systems, robotics, computer vision, communications, large scale networks,
> concurrent computation, comparative genomics and many other areas. This
> special
> issue is devoted to papers on potential and actual applications of algebraic
> topology as well as to papers on computational techniques and problems
> related
> to algorithmic algebraic topology.
>
> Contributions are welcome on:
>
> - Potential applications of algebraic topology in mathematics, computer
> science,physics, engineering, industry, communications, business and other
> areas.
> - Actual applications of algebraic topology.
> - All computational aspects of algebraic topology.
>
> Fields of application include but are not restricted to:
>
> ?Coding theory
> ?Combinatorics
> ?Commutative algebra
> ?Computer science, including algorithms and distributed computing
> ?Data analysis
> ?Differential systems
> ?Digital images
> ?Discrete and computational geometry
> ?Dynamical systems
> ?Electromagnetism
> ?Effective homology
> ?Graph theory
> ?Group theory
> ?Medical sciences
> ?Persistent homology
> ?Physics
> ?Reliability theory
> ?Robotics
> ?Statistics
>
> Paper submissions should follow the guidelines for AAECC submissions, see
> http://www.springer.com/computer/theoretical+computer+science/journal/200
>
> Submissions can be sent to either of the editors:
> Graham Ellis, graham.ellis at nuigalway.ie
> Eduardo S?enz-de-Cabez?n, eduardo.saenz-de-cabezon at unirioja.es
>
> All the papers will be refereed according to the AAECC standards.
>
> DEADLINE: January 3, 2011
>
>
>
>
>
> ------------------------------
>
> _______________________________________________
> Forum mailing list
> Forum at mail.gap-system.org
> http://mail.gap-system.org/mailman/listinfo/forum
>
>
> End of Forum Digest, Vol 82, Issue 1
> ************************************
>
--
zahra sheikhaleslami
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