Activity
From 03 May 2012 to 01 Jun 2012
01 Jun 2012
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23:44 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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18:09 Support #177 (In Progress): CoCoAManual: General part of the documentation is obsolete: update? discard?
- 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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- 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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- 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...
28 May 2012
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- Implemented *@IsTrueGCDDomain@*; the main cost was sorting out the consequential changes. Eliminated @ERR::NotGCDDom...
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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- 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
23 May 2012
21 May 2012
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- JAA talked to Anna. She liked @subscript@ and will implement.
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- 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...
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, ...
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 *...
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