Activity
From 02 Oct 2017 to 31 Oct 2017
31 Oct 2017
- 15:36 CoCoALib Slug #1105: Primary Decompositon (zero-dim) slow cases
- Here are some examples I found lying around in a file:...
- 14:55 CoCoA-5 Slug #1114: Some other examples for 0-dim radical
- Here are some examples where the radical is "large" compared to the original ideal:
(no doubt I generated them rando... - 14:54 CoCoA-5 Slug #1114: Some other examples for 0-dim radical
- I am tidying up on my computer, but didn't want to lose these examples....
- 14:51 CoCoA-5 Slug #1114 (Closed): Some other examples for 0-dim radical
- I gather here some example ideals where *@radical@* was slow.
These may be useful for future testing, "optimiziation...
27 Oct 2017
- 17:45 CoCoALib Bug #1113 (Closed): gcd crashes (Floating point exception)
- In an old file (from 2006) I found two examples where GCD (in CoCoA4) crashes because it runs out of primes; since we...
- 11:53 CoCoALib Design #703: Add more operations between modules (CoCoALib)
- Reminder. Add +.
- 11:33 CoCoA-5 Feature #1112 (Closed): New function: IsEmpty
- add function @IsEmpty(L)@ for LIST.
25 Oct 2017
- 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...
- 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
- 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 ...
- 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
- 17:15 CoCoALib Feature #1108 (Resolved): New fn: IsCoprime (whenever gcd makes sense)
- I have written a first trivial implementation. Seems to work.
- 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
- 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
- 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
- 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
- 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
- 14:56 CoCoALib Slug #1105: Primary Decompositon (zero-dim) slow cases
- Here are some more examples: each gen here has 4 terms...
- 13:39 CoCoALib Slug #1105: Primary Decompositon (zero-dim) slow cases
- The examples were generated by random search printing out successively slower cases.
- 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:...
- 13:30 CoCoA-5 Feature #731 (In Progress): Primary Decomposition in CoCoA-5
- PD for 0-dim ideals has been implemented (see issue #845)
Also available in: Atom