Activity
From 03 May 2012 to 01 Jun 2012
01 Jun 2012
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23:44 CoCoA-5 Bug #117: Added 3 times defn of isblank fn
- Maybe put @IsBlank@ into a file called *@C5utils@*?
What do you think? Perhaps a few other fns could be moved there... -
- Anna could you reply to my question in post 5?
I think it should be an error to start CoCoA without the packages. ... -
- NOTE the fn is called *@pop-to-buffer-cocoa5-source-find-error@*.
And also *@pop-to-buffer-cocoa5-source-find-X@*
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- If *@N*X@* is valid (for @N@ integer, and @X@ of some type) then it makes perfect sense that @-X@ should be equivalen...
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18:35 Bug #53 (Closed): MSVC10 compilation
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- A decision should be made about the general part of the documentation.
Probably we should reduce it considerably, ... -
- CoCoA-5 already offers a big collection of new functions and commands
(mainly listed in http://cocoa.dima.unige.it/c... -
- I close this issue related with Elisa Fascio's work about reading and fixing all the "command" entries.
Still to d... -
- It was available in CoCoA-4 through CoCoAServer.
What syntax should it offer? Probably the same as CoCoA-4.
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- Which types should offer *@IsStdGraded@*?
Port it also to CoCoA-5 -
- Latest addition in CoCoALib could also be useful in CoCoA-5...
but since @symbol@ is not a type in CoCoA-5 that coul... -
- --fullCoCoALibError is a flag for CoCoAInterpreter.
When active any error gives the full description for CoCoALib de...
31 May 2012
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- Add also Dim&Mult for non-standard degree (or no degree, such as with @Lex@)
They are defined independently of the gr... -
- Negation ("-") is undefined for X, a list or matrix (and what else???)
However (-1)*X is allowed.
Should we defin... -
30 May 2012
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- Alessandra has looked at the doc and examples for:
* @PPMonoid@ -- approved by Alessandra!
* @symbol@ -- approved b... -
- Done everything.
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- I've contined to use *@RealRootsApprox@* intensively, and no further problems have come to light. So I'm closing thi...
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- It would be handy to have a similar shortcut for homogeneous lists.
Also for ideals, but that raises the same questi... -
- Proposal for new "constructors": @R@ ring, @A@ matrix, @x@ ringelem (or powerproduct or ...), ... and what else?
*@M... -
29 May 2012
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- I've written a simple example -- I hope Alessandra Caleo likes it!
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- Implemented the last suggestion, that way we can try it. Remember that *@bool3@* may eventually be replaced by *@tri...
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- Separated *@ThreadsafeCounter@*; written documentation.
Used @ThreadsafeCounter@ inside @NewRingID@ in @ring.C@.
Al...
28 May 2012
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- Proposal for shorter names: *@IsTrue3@* and *@IsFalse3@* and *@IsUncertain3@*
Propose replacing @DefinitelyTrue@, ... -
- JAA is not sure how to test the threadsafe counter since we don't know how to compile and run multithreaded programs....
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- A "very small exp" version may be slightly faster because more PPs fit in the cache, but I doubt the slight gain woul...
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- I've cleaned the code, and updated the documentation.
Note: Task #157 will make a further change to this one.
A... -
- Alessio has written a prototype test program; he will improve it.
He has added some detail to the report.
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- Implemented *@IsTrueGCDDomain@*; the main cost was sorting out the consequential changes. Eliminated @ERR::NotGCDDom...
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- I've moved (into *@IntOperations@*) and reorganized all the integer functions. There were lots of consequential chan...
25 May 2012
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- I was not able to find the manual page for *@Try@* using the HTML version of the CoCoA-5 manual. I clicked on the "s...
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- Problem originally arose in CoCoA-5, but the solution lies in changes to CoCoALib.
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- The hard part will be all the consequential changes.
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- Often the description in the CoCoA manual refers to the formal parameters by name.
Should these names be put in a sp... -
- The manual entries in CoCoAHelp.xml include a collection of the types involved.
What convention should be used for t... -
- Implemented *@Bool01@* in the package @NotBuiltin.cpkg5@.
The fn *@Error@* (with capital @E@) is now built-in rather... -
- After speaking to Anna about the various possibilities, she convinced me that the simplest approach is best (at least...
24 May 2012
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- While adding *@IsDivisible@* for integers, it was not clear where to put the declarations and definitions. So far th...
23 May 2012
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- ...
22 May 2012
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- I've just looked at the code for @FractionFieldImpl@. I must make a separate impl for arithmetic if GCD is not avai...
21 May 2012
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- JAA talked to Anna. She liked @subscript@ and will implement.
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- After speaking to Anna and Renzo, we concluded that it is better to keep @FractionField@ general.
Anna proposed cr... -
- John Abbott wrote:
> JAA proposes: the base ring of a *@FractionField@* must be a @TrueGCDDomain@ (and this must be ... -
- If my proposal is accepted, someone will have to look through the existing code and remove any checks which will have...
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- I've started implementing @IsTrueGCDDomain@.
I noticed that the ctor for a *@FractionField@* checks that the base ... -
- Alessio has a first solid version of his report.
We spoke of how to generate tables of timings automatically; Alessi... -
- I don't like an automatic conversion.
We could write a conversion function *Bool01* (the shortest name I could think... -
- Though I didn't say so explicitly previously, I believe that a truly *automatic* conversion from @BOOL@ to @INT@ is l...
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- Oh dear, I keep forgetting to log time here. I'll just make a guess.
20 May 2012
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- I've modified RealRoots, and it seems to work now.
What puzzles me is that the bug came to light only today, even ... -
- Added a new C5 test file.
The RealRoots code is rather messy; I suppose it should be rewritten in C++. Any volunt... -
- The example I gave contains @FStar@ instead of @F@.
The bug is simply an unwarranted error; JAA does not believe the... -
- The following lines produce an *@ERR::SERIOUS@* on my installation...
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- By accident I created a filename containing a newline.
Sending the file to CoCoA-5 in emacs (by C-c C-f) produced th...
17 May 2012
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- Anna Maria Bigatti wrote:
> So the best is *@IsTrueGCDDomain@* it is the shortest of the type @Is***GCDDomain@ (and ... -
- > Almost all our suggestions are rather long; perhaps this does not matter so much? Maybe we should just choose one,...
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- Anna Maria Bigatti wrote:
> Another suggestion: *IsValidGCDDomain* (by L.Robbiano)
I'm not very convinced; I'd... -
- John Abbott wrote:
> However, if we regard fields as not "gcd domains" then what name should be use to mean "gcd doma... -
- RegularityIndex is not complete/correct...
16 May 2012
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- JAA believes that *@myGcdInField@* was created for the following reason.
In CoCoALib fields satisfy *@IsGCDDomain@... -
- > JAA thinks that
> *we can compute GCDs between values of type @RAT@*
> should be equivalent to
> *we can compute GC... -
- JAA thinks that
> *we can compute GCDs between values of type @RAT@*
should be equivalent to
> *we can compute... -
- There is one other imstance where @myGCDInField@ is called.
*@ex-RingElem1@* attempts to compute a GCD in a field (a... -
- JAA modified @RingBase::myGcdInField@ to give error rather than produce a result of 0/1. All CoCoALib tests passed, ...
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- A richer template for the documentation is offered in @empty.txt@ for homogeneity in class descriptions and facilitat...
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- Some documentation has already been rewritten.
Check that all files have appropriate links to operations in the righ... -
- Redmine seems a lot easier to keep up-to-date than our old task table page.
We should then remove the task table and...
15 May 2012
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- It seems to work OK for monomial ideals, but......
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- JAA cannot find the manual page for *@AsRAT@* (ditto *@AsINT@*).
The only occurrence in @CoCoAHelp.xml@ is in a @<s... -
- JAA has checked in the modified defn of *@AsRAT@*.
The question of the names of @AsRAT@ and @IsRational@ remains o... -
- John Abbott wrote:
> It seems reasonable to me that *@AsRAT@* give either error or a @RAT@ as result -- after all it ... -
- JAA has modified the defn of *@AsRAT@* so that it returns a @RAT@ even if the arg given was an @INT@. All the CoCoA-...
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- JAA was wondering how to convert a value of type @INT@ into the equivalent value of type @RAT@. Recall that arithmet...
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- *@AsRAT@* is defined at lines 31--39 of the file @NotBuiltin.cpkg5@.
[updating the defn should be pretty easy]
*B... -
- It seems reasonable to me that *@AsRAT@* give either error or a @RAT@ as result -- after all it is a sort of "cast". ...
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- In CoCoALib we have the function @myGcdInField@, so we can compute gcd of elements in RingQQ. So, what shouldwe do i...
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- The code now works: *@type(gcd([2,3,4])@* is of type @INT@.
Also @lcm@ has been fixed accordingly.
It does not se... -
14 May 2012
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- Anna thinks she can fix the reading of homogeneous lists; she will look into it in the next few days.
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- JAA thinks that introducing a separate name for the function for computing GCD of integers is a *bad* idea because it...
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- JAA proposes that reading of homogeneous lists have three possible return types:
* list of @INT@
* list of @RAT@
*... -
- Today some students passed with a CoCoA-5 problem which derived from the unexpected return type of *@gcd@* applied to...
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- What type should the result of *@AsRAT(3)@* have?
At the moment @AsRAT@ returns an *@INT@* if its arg is of type *...
11 May 2012
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- Alessandra reports that the doc for *@PPMonoid@* did not explain clearly what a PPMonoid is, nor why CoCoALib offers ...
10 May 2012
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- Added fns equivalent to many of the procedures for arithmetic.
Needed to add several other fns. Development proce... -
- Consider making a BOOST-free (and possibly non-threadsafe) version so that CoCoALib can be compiled without requiring...
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- The *@ThreadsafeCounter@* recently added to @symbol.C@ will be useful elsewhere (_e.g._ in rings for the ring counter...
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- It is simpler to move the "special" ctor into the private zone, and remove the *@AnonymousMarker@*. This should take...
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- Check through existing code, and use anonymous symbols where appropriate. Then check everything!
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- I have opted not to implement *@IsAnonymous@* because I cannot think of when it might actually be useful.
The curr... -
- JAA has completed a first impl. The new public fns (pseudo-ctors) are:
* *@NewSymbol()@* which creates a single new... -
- A first impl of nameless symbols together with a change to line 1480 in @TmpGReductor.C@ has solved the problem.
A...
09 May 2012
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- The current suggestion for imlpementation is the following:
* internally an anonymous symbol has empty head
* the p...
08 May 2012
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- Anna Maria Bigatti wrote:
> *@Elim@* (and a few other functions) create a temporary ring.
Yes. Temporary rings are ... -
- John Abbott wrote:
> No doubt the problem is due to the temporary rings (inside @Elim@) not self destroying when the... -
- JAA suggests that internally the head of an "anonymous" symbol be the empty string; the accessor function then checks...
07 May 2012
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- John Abbott wrote:
> Here are some more proposals for the head: *@??@* or *@#@* or *@_@*
>
> (...)
>
> Right now ... -
- Here are some more proposals for the head: *@??@* or *@#@* or *@_@*
Printed value would look like: *@3*??[17]^... -
- This is hardly important, but might be beneficial in a multithreaded environment. Possibly it would be "cleaner" too...
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- Here are 3 proposals for new PPMonoid pseudo-ctor signatures:...
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- JAA's first suggestion is to create "gensyms" containing a single index (in the hope that the index will not overflow...
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- The pseudo-ctors for PPMonoids all require that names be specified for the indets.
It can occur that we want to cr... -
- The guilty line is 1480 in *@TmpGReductor.C@*
My example used an unindexed *@x@* in the field of coeffs -- this tri... -
- GCD produces an unexpected error. Here is an example:...
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- Alessio has started writing his report on Bernardin's article.
There are some typos in the article. JAA has given... -
- GCDs in a poly ring over a field are defined only upto a constant factor.
If the field is a FractionField then there... -
- The function *@ContentWRT@* gives result with strange scale factors sometimes....
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- This issue has effectively been replaced by #107.
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- Should there also be a fn called *@PthPower@*?
I note that *@IsPthPower2@* and *@PthRoot2@* have become forgotten;...
04 May 2012
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- Spent about 45 mins discussing with Anna. Differences of opinion remain.
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- We need shorter names for *@IsDefinitelyTrue@* and *@IsDefinitelyFalse@*.
Also need a shorter way of expressing th... -
- I have modified *@operator<<@* for OpenMath streams so that they handle explicitly machine integers (rather than *@Ma...
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- Alessandra reports:
* the examples 2,3,4 of *@ex-RingWeyl@* are almost identical -- this cannot be what is intended!
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- In some quiet moment switch to using BOOST's *@tribool@* (or C++11 equivalent if it exists).
It seems pointless try...
03 May 2012
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- There is already some code called *@TmpChainCanonicalHom@* in @CanonicalHom.[HC]@: it looks whether there is a "chain...
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- Implement *@NaturalMap@* and iterated *@CanonicalHom@*
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- *@RingOf@* can be applied to: ideal, RingElem, matrix, HomogList.
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- In CoCoA-5 to get the ring to which a RingElem belongs we use the fn *@RingOf@*.
Currently in CoCoALib the analogous...
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