Activity
From 27 Sep 2017 to 26 Oct 2017
25 Oct 2017
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16:14 CoCoA-5 Support #1111: CoCoAManual: searching for ?? mat and for ?? matrix give different results
- I was hoping to have an interesting issue with number 1111; instead it is just this... sigh!
My guess is that a Co... -
16:12 CoCoA-5 Support #1111 (Closed): CoCoAManual: searching for ?? mat and for ?? matrix give different results
- In CoCoA-5...
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13:29 CoCoALib Slug #1110 (Closed): Determinant of matrix over QQ (whose entries are actually integers)
- CoCoA-5 can be much faster as computing @det(M)@ if @RingOf(M)@ is @ZZ@ than the same matrix but over the ring @QQ@.
...
19 Oct 2017
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17:12 CoCoA-5 Slug #1109 (In Progress): Emacs UI can be slow in M$ Windows
- I searched on internet and found some descriptions of similar problems. The suggestion is to add the following line ...
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17:08 CoCoA-5 Slug #1109 (Closed): Emacs UI can be slow in M$ Windows
- At the school in Cameroon I saw that some Microsoft Windows computers were terribly slow (_e.g._ 30s delay after each...
17 Oct 2017
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17:15 CoCoALib Feature #1108 (Resolved): New fn: IsCoprime (whenever gcd makes sense)
- I have written a first trivial implementation. Seems to work.
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16:50 CoCoALib Feature #1108: New fn: IsCoprime (whenever gcd makes sense)
- The fn should be defined when *@gcd@* makes sense (_i.e._ for true GCD domains and @BigInt@).
At the moment I pref... -
16:48 CoCoALib Feature #1108 (Closed): New fn: IsCoprime (whenever gcd makes sense)
- Define a new fn *@IsCoprime@* which is equivalent to *@IsInvertible(gcd(arg1, arg2))@*
JAA thinks it is better to ... -
15:47 CoCoALib Feature #630 (Feedback): Add graeffe function?
- Added code; doc; example.
Also made accessible to CoCoA-5.
16 Oct 2017
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16:54 CoCoA-5 Feature #1107: CoCoA Online: install (using InteractiveShell)
- First hard work: install properly vagrant.
(with the help of Alessandro Cartatone) -
16:49 CoCoA-5 Feature #1107 (New): CoCoA Online: install (using InteractiveShell)
- install CoCoA Online (using InteractiveShell)
09 Oct 2017
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15:23 CoCoA-5 Support #977: "universal denominator" (related with GroebnerFanIdeals)
- John Abbott wrote:
> JAA prefers INT to RINGELEM (at least for the moment).
OK, I'll change it back.
> If the co... -
15:19 CoCoA-5 Support #977: "universal denominator" (related with GroebnerFanIdeals)
- JAA prefers INT to RINGELEM (at least for the moment).
If the coeff ring is not QQ but is FracField then I'm not s... -
12:53 CoCoA-5 Support #977: "universal denominator" (related with GroebnerFanIdeals)
- Should @UniversalDenominator@ return @INT@ or @RingElem@?
We should also choose its name: @UniversalDen@?
Current...
05 Oct 2017
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10:21 CoCoA-5 Slug #907: ApproxSolve very slow on this example
- This is another example where @ApproxSolve@ is too slow (in CoCoA-5.2.2).
The example came from "playing with" palin...
04 Oct 2017
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13:43 CoCoALib Design #1106 (Closed): Remove READLINE from CoCoALib
- CoCoALib does not depend on READLINE.
Change the LDLIBS and CPP flags so that CoCoALib is completely independent of ...
02 Oct 2017
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14:56 CoCoALib Slug #1105: Primary Decompositon (zero-dim) slow cases
- Here are some more examples: each gen here has 4 terms...
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13:39 CoCoALib Slug #1105: Primary Decompositon (zero-dim) slow cases
- The examples were generated by random search printing out successively slower cases.
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13:38 CoCoALib Slug #1105 (Closed): Primary Decompositon (zero-dim) slow cases
- Here are some cases where @PrimaryDecomposition0@ in CoCoA-5.2.2 is slow:...
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13:30 CoCoA-5 Feature #731 (In Progress): Primary Decomposition in CoCoA-5
- PD for 0-dim ideals has been implemented (see issue #845)
27 Sep 2017
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17:22 CoCoA-5 Slug #948: radical is slow (compared to singular) on these examples
- Singular appears not to compute a GBasis for the radical.
For instance, in the first example in comment 11, Singul...
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