Activity
From 10 Sep 2012 to 09 Oct 2012
09 Oct 2012
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15:55 Feature #259 (Closed): Squarefree(?) GCD-free basis
- Hensel lifting for univariate GCDs requires a squarefree GCDfree basis.
There is an implementation in @GCDfreeBasis.... -
- In CoCoA-4 there is some rather inefficient code for multivariate lifting. Can it be made more efficient?
In any ... -
- The old CoCoA-4 univariate GCD code should be transcribed into CoCoALib.
It comprises:
* gcd in Fp[x] via standar... -
- [following on from a discussion with Christof]
It does not seem to be possible to allow more than one input expressi... -
- Any progress?
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- JAA proposes the following guideline:
a coefficient is printed between brackets except when:
* the coefficients @+1@...
08 Oct 2012
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- Specify what default grading is.
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- As we did for GMP (see #247)
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- Closed issue #247 has satisfied wish (7).
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- Christof and John looked at various possible printed forms of *@(3-2*x)^5@*...
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16:00 Design #254 (Closed): How to return a Hilbert Series in CoCoALib
- Right now Hilbert series do not exist in CoCoALib.
In CoCoA-5 they are built in the package @hp.cpkg5@.
Now we ne... -
- Don't forget the *@DEBUG2@* setting available in @autoconf.mk@; it activates checking in @MemPool@ managed memory, an...
05 Oct 2012
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- If I define @ConvertTo@ for converting @RingElem@ into @BigInt@, should I define all members of the convert family fo...
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- Improved all multivariate polynomials (using new function *myAddMonomial*)
Need some memory checking, just to make s... -
- I found the reason why "lhs+=f" is slow:
to guarantee *exception safety* it has to make a copy of lhs.
But, when f is... -
- I made an example showing how to add one monomial at a time and comparing timings with standard "+=".
... "+=" is ... -
- *2013-02-18: The problem presented in this post has been resolved by removing the class @RefRingElem@ (see #261)*
Th... -
17:25 Feature #218: CoCoALib normaliz interface
- More code clean up and use of new libnormaliz functions for meaningful error messages when something couldn't be comp...
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- * Made the NewCone functions to constructors of cone.
* Introduced some abbreviation in the method names:
Integral... -
- I have changed the name of a field in a @factorization@ object: it is now @myMultiplicities@ rather than the previous...
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- There is a new configuration option *@--threadsafe-hack@* which activates the CoCoALib compilation flag @-DCoCoA_THRE...
04 Oct 2012
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- Implemented Bruns(10): "multiplicity" instead of "exponents" in @factorization@
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- Dear Anna and John,
let me collect all the points that came up in the development of nmzIntegrate (Christof has ev... -
- all done, all tests and documentation for CoCoALib and CoCoA-5
Need to sleep on it an tomorrow I'll check it in and ... -
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- An interesting suggestion is to have a procedure (with 2 params) which "moves" the leading form of one param into the...
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- Anna will add a clear example.
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- JAA suggests using the @convert@ family for achieving this. For instance...
03 Oct 2012
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- I've solved yesterday's problem (but still have not understood what caused it).
I was about to update the documentat... -
- My "gut feeling" is that code in @tmp.C@ should not have official documentation.
However, from a practical point o... -
- @tmp.H@ includes some useful functions, such as *sum*, *product*, ...
but documentation is missing (of course, as it... -
- Did what I said in the previous post and:
* Integration of the ConeImpl.myXX() into the XX(), only the myCompute fun... -
- Now there are tests, and documentation.
Should also add multihomogenization: takes just some designing, all "brute c...
02 Oct 2012
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- Most of the work is done.
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- Non homogeneous assignment of @RingElem@ is trickier than I thought (because of the inheritance from *@RefRingElem@*)...
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- Note that assignment to a *@RefRingElem@* cannot change the ring to which it belongs because it may well be a referen...
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- We agreed on:
keep the SmartPtr class cone
remove the abstract base class
name the implementation class ConeImpl -
- I have improved the doc for *@ring@* (adding assignment and equality tests).
I have also confirmed that the curren...
01 Oct 2012
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- Works fine. Thanks!
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- A simple test example showed that assignment of rings was already working. A visual check of the source for @SmartPt...
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- To enable assignment for *@ring@* I must enable assignment for *@SmartPtrIRC@*. I wonder what consequences that will...
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- The function...
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- The web page for MPFR reports that there is a library *MPFI* which implements interval arithmetic on top of MPFR.
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- Implement (in C++) approximate QIR following the article by Kerber+Sagraloff (publ ISSAC 2011).
The impl will need...
28 Sep 2012
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- OK! As I said for #221
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- JAA proposes we add:
* default ctor for *@ring@* (value is @RingZZ()@)
* assignment of rings
The second is cert... -
- John Abbott wrote:
> Any objections to allowing assignment of values of type @ring@?
ok for me: in fact I had to ... -
- To implement assignment of @RingElem@ which can change the ring, I need to allow *@ring@* to be assigned -- currently...
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- *Case (A)* We have decided that this code:...
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- To close a "version":
go to roadmap
select the version
top right corner (usually outside my narrow window..) there... -
- Done: PolyRing
(now I write the documentation. Where? RingElem.txt?) -
- For checking the input of some CoCoA5 Normaliz functions I could use an AreMonomials(const std::vector<RingElem>& ) f...
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- Alessandra:
* several guidelines for improving *@DynamicBitset@* (doc and example)
* approved @symbol@, @ideal@, @fac... -
- Alessio produced a slightly improved impl for computing squares, except that it actually runs slightly more slowly th...
26 Sep 2012
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- We expect the homogenizing indeterminate is in the ring (as in cocoa-4).
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- To make the conversion at least easier a constructor like in #7 note-4 would be helpful: *@RingElem(R, x)@*
If an ... -
- John Abbott wrote:
> If we allow "mixed ring" assignment then we should also allow "mixed ring" *@swap@*.
I agree -
- If we allow "mixed ring" assignment then we should also allow "mixed ring" *@swap@*.
JAA would expect *@swap@* to ...
25 Sep 2012
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- The geobucket doc is very old and needs a major revision.
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- Should we implement functions very like *@AsINT@* and *@AsRAT@* in CoCoALib?
What should their names be? Anna sug... -
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- Anna, Christof and John all agree that:
* the default ctor for @RingElem@ produces 0 in @ZZ@
* the rule/guideline i...
24 Sep 2012
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- Add a test for @QBGenerator@.
PS I made a mistake while updating the @QBGenerator@ code, and all tests passed (so ... -
- This may not be the correct place, but I wanted to note that until we have automatic conversions (if ever), an equali...
21 Sep 2012
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- Alessandra helped us
* sort out doc for @ideal@, @ApproxPts@, @BuildInfo@, @error@
* improve examples for @Alexande... -
- Alessandra has decided to do 3 rather than 4 credits.
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- Improve maintainer doc for @QBGenerator@.
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- > Testing has highlighted some curious (& undesirable) behaviour of the CoCoA interpreter, _e.g._ doubling the degree...
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- Alessio has produced two prototype implementations in CoCoA: one computes the square "in place", the other produces a...
19 Sep 2012
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- Robbiano requested a function for randomizing the coeffs of a polynomial (which is just a ring elem).
It would be ...
18 Sep 2012
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- Here's Bruns's original request:
do you have a function that returns the highest homogeneous component of
a polyno... -
- Winfried Bruns reports the following issue:
... sometimes libcocoa.a is created without an index on my machines. T...
10 Sep 2012
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- Now CoCoALib offers HilbertBasis on the "holey lattice".
It would be nice to have also the "full-lattice".
Think of...
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