Activity
From 29 Dec 2020 to 27 Jan 2021
26 Jan 2021
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13:47 CoCoALib Design #1558: CpuTimeLimit: more frequent clock checks
- While looking for examples for my course computer algebra I wanted to use @GBasisTimeout@. Sometimes the curr impl d...
22 Jan 2021
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20:44 CoCoALib Feature #152 (Resolved): Replace bool3 by tribool
- I have updated the code. Maybe the revised impl is cleaner.
Anyway, it all seems to work. The code is so simple, t... -
17:15 CoCoALib Feature #152 (In Progress): Replace bool3 by tribool
- While the impl in BOOST is surely good, I do prefer to keep CoCoALib independent of BOOST (of course, the interpreter...
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16:22 CoCoALib Slug #1569: IsInRadical too slow (test-RadicalMembership)
- Not surprisingly the computation mod p is very quick.
BTW the answer to the computation as given is (almost certai... -
15:09 CoCoALib Slug #1569 (Closed): IsInRadical too slow (test-RadicalMembership)
- From a demo I showed my students...
I computed a "nasty" 0-dim radical, then wanted to show @MinPowerInIdeal@, but i... -
15:05 CoCoALib Bug #1565 (Feedback): IsInRadical: gives "weird" error
- I have modified the code so that it avoid recomputing the "radical helpers".
All tests pass. Will clean and then ch... -
10:49 CoCoA-5 Design #1151 (Feedback): ConcatList or ConcatLists
- John Abbott wrote:
> Personally I find the name @ConcatLists@ more "natural" because it concatenates many lists.
... -
10:34 CoCoALib Bug #1484: ker bug (quotientinghom for R/ideal())
- John Abbott wrote:
> There are two more suspect creations of ideals: line 325 and 347.
> I have changed these too, ... -
09:58 CoCoA-5 Design #1568 (In Progress): RMap and image: obsolescent?
- I thought @Rmap@ was completely obsolete.
It is defined in @coclib.cpkg5@ and exported.
It is also defined in @ra... -
09:52 CoCoA-5 Feature #531: Package protected variables should know which package protected them
- There is a sort of redundancy in package @$anna@ putting a protection reason on the variable @$anna.var@.
It would... -
08:44 CoCoA-5 Feature #531: Package protected variables should know which package protected them
- All done: works for @:=@, @unprotect@ and @define@.
The field @protectionReason@ is actually set, but for the comp... -
08:31 CoCoA-5 Feature #1174 (Feedback): package of a function --> of an identifier!
- I'm now convinced that the only exception to the evaluation of the argument of a function should be @IsDefined@. The...
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08:23 CoCoA-5 Feature #346 (Feedback): Describe should indicate package name
21 Jan 2021
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15:16 CoCoA-5 Bug #1567 (Resolved): Radical in non-zero char
- I have found the problem and fixed it. Also done some cleaning inside @radical.cpkg5@
When are we moving this to C+... -
15:15 CoCoA-5 Bug #1567 (Closed): Radical in non-zero char
- ...
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13:46 CoCoA-5 Support #1566 (Closed): What does rad do?
- It seems that CoCoA-5 has a function *@rad@*
What does it do? It is not documented.
19 Jan 2021
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14:03 CoCoALib Bug #1565 (In Progress): IsInRadical: gives "weird" error
- I have modified @RadicalHelpers@ in @SparsePolyOps-RadicalMembership.C@
Seems Ok now. Still testing. -
13:27 CoCoALib Bug #1565: IsInRadical: gives "weird" error
- Also get:...
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13:25 CoCoALib Bug #1565 (Closed): IsInRadical: gives "weird" error
- Specific example:...
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12:39 CoCoA-5 Feature #1469: Get indexed indets from a polyring
- Hi,
I would highly appreciate such a function, however I think it would be even better if one must not first initial... -
09:20 CoCoA-5 Feature #1564 (New): Geometrical theorem proving package
- What is the stats of the _geometrical theorem proving_ package?
It seems the package is there, but the on-line man...
15 Jan 2021
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21:15 CoCoALib Feature #206: Matrix equation solving: LinKer
- The source of *@LinKerBasis@* looks a bit dodgy.
Given a matrix it does what is expected; but it also works for a _l... -
21:07 CoCoALib Feature #206: Matrix equation solving: LinKer
- This was originally in issue #122; moving it to here.
What is the difference between @LinKer@ and @LinKerBasis@?
... -
21:09 CoCoALib Feature #122 (Closed): Porting "LinKer"
- This seems to be a *duplicate* of #206; since there is more info under that index, I'm closing this one.
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09:18 CoCoALib Feature #122: Porting "LinKer"
- What is the difference between *@LinKer@* and *@LinKerBasis@*?
Is @LinKerBasis@ essentially the same as @GetCols(Lin... -
21:05 CoCoA-5 Design #1546 (Feedback): Improve 'describe' or 'print' for a function
- This is now working fine (after Anna changed the impl of print in the interpreter). Moving to *feedback*.
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20:56 CoCoA-5 Feature #346: Describe should indicate package name
- Since @print@ and @sprint@ now produce the body of a CoCoA-5 function, it superfluous for @describe@ to do the same.
... -
20:52 CoCoA-5 Feature #346 (Resolved): Describe should indicate package name
- *IMPORTANT*
* the @describe@ command describes a _value_ and not a _variable_;
* a fn defn *does not contain any in... -
09:13 CoCoA-5 Feature #346: Describe should indicate package name
- Since Anna seems to have solved issue #1174, is it now possible to make progress here?
Since normal printing now p... -
20:42 CoCoA-5 Feature #531: Package protected variables should know which package protected them
- In the source code indicated by Anna, there is a loop which sets @protectionReason@ (or some similar name).
These re... -
12:23 CoCoA-5 Feature #531: Package protected variables should know which package protected them
- Anna Maria Bigatti wrote:
> There is something called @protectionReason@ but seems unset (very strange: the code for... -
10:39 CoCoA-5 Feature #531: Package protected variables should know which package protected them
- modified also implementation of @unprotect@...
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10:30 CoCoA-5 Feature #531 (Feedback): Package protected variables should know which package protected them
- Implemented: updated code of @CheckProtection@ (extra arg runtimeEnv) in Interpreter.C
(done it, before I forgot the... -
08:18 CoCoA-5 Feature #531: Package protected variables should know which package protected them
- I might be able to fix this, see #1174
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18:01 CoCoALib Support #1265 (In Progress): Unregistered TXT files in doc
- Progress chart:
* *@SmallPrime.txt@* removed because very out of date
* _fill in as progress is made_ -
17:55 CoCoALib Design #1563 (Feedback): BigRat: ctor from machine int
- I have now changed all calls @BigRat(...,1)@ into just @BigRat(...)@ in examples, tests, and source code.
Checking i... -
17:08 CoCoALib Design #1563 (Resolved): BigRat: ctor from machine int
- I have added 2 new ctors (one from @MachineInt@ and one from @BigInt@).
They are @explicit@ (as is the ctor for @Big... -
17:05 CoCoALib Design #1563: BigRat: ctor from machine int
- I have just discussed with Anna. Bruns's argument is persuasive: our original decision was to protect the user again...
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16:18 CoCoALib Design #1563 (In Progress): BigRat: ctor from machine int
- There were 2 reasons for prohibiting ctor from a machine int: ambiguity of BigInt(0) since 0 could also be interprete...
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15:39 CoCoALib Design #1563 (Closed): BigRat: ctor from machine int
- Bruns asks the following "why?"...
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17:13 CoCoALib Design #1180: BigRat(0) unexpectedly compiles! (calls ctor with mpq_t arg)
- *IMPORTANT UPDATE*(2021-01-15) this decision has now been reversed in issue #1563
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10:02 CoCoALib Feature #1559: Default ctor for rings
- The class *@ring@* does have a default ctor (which assigns @RingZZ()@ as initial value).
In contrast, @SparsePolyRin... -
09:07 CoCoA-5 Feature #1174: package of a function --> of an identifier!
- Well done! I suggest we accept the version taking a string for the time being (unless you can easily make a fn like ...
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08:29 CoCoA-5 Feature #1174: package of a function --> of an identifier!
- Example:...
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08:11 CoCoA-5 Feature #1174: package of a function --> of an identifier!
- should the name be @PackageOf@?
I have investigated: belonging to a package (variable) is a property of the variab... -
06:48 CoCoA-5 Bug #1531: CRASH: arithmetic with HilbertSeries (tagged object)
- It (correctly) gives error both on right and left, no crash.
14 Jan 2021
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14:31 CoCoALib Feature #206: Matrix equation solving: LinKer
- The fn *@LinKerZZ@* is available in my copy of CoCoA-5, but there is no doc.
The doc for CoCoALib seems explicit.
... -
14:27 CoCoALib Feature #122: Porting "LinKer"
- Has this already been done? There are two fns in CoCoA-5: @LinKer@ and @LinKerBasis@.
What about @LinKerZZ@?
12 Jan 2021
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14:32 CoCoALib Design #1558: CpuTimeLimit: more frequent clock checks
- I have modified the impl so that it triggers only when the CPU time limit has been exceeded, but it does try to call ...
11 Jan 2021
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11:09 CoCoALib Design #1562 (New): matrix.H and MatrixView.H
- To be able to use the type @ConstMatrixView@ I need to include @matrix.H@ rather than @MatrixView.H@.
Is this reas... -
10:19 CoCoALib Support #1561 (New): Doc for module term orderings
- The documentation for module term orderings is unhelpful (to put it politely).
I wanted to find out whether a @Fre... -
10:02 CoCoA-5 Bug #1560: elim for modules
- Not sure how hard this might be. Does it suffice to create a poly ring with elim order, and then compute the GB for ...
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09:59 CoCoA-5 Bug #1560 (New): elim for modules
- Bernhard Andraschko reported the following NYI:...
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08:55 CoCoALib Design #1558: CpuTimeLimit: more frequent clock checks
- John Abbott wrote:
> Now I am wondering whether it may not make more sense to base @CpuTimeLimit@ on the "steady clo...
09 Jan 2021
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18:20 CoCoALib Feature #1559 (In Progress): Default ctor for rings
- Winfried Bruns sent the following by email:
"I wanted to define a class that contains two sparesepoly rings as mem...
08 Jan 2021
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18:46 CoCoALib Bug #1376 (Resolved): GBasisTimeout: not working as expected
- Using just the one example "french students" example, the current (2021-01-08) version of @CpuTimeLimit@ works accept...
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09:48 CoCoALib Bug #1376: GBasisTimeout: not working as expected
- Now I think it should be possible to make @CpuTimeLimit@ check the time more frequently without much overhead (by che...
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18:11 CoCoALib Design #1558 (Resolved): CpuTimeLimit: more frequent clock checks
- I now have a version of @CpuTimeLimit@, which actually uses only "steady clock" rather than @CpuTime@.
It seems to... -
16:11 CoCoALib Design #1558: CpuTimeLimit: more frequent clock checks
- Now I am wondering whether it may not make more sense to base @CpuTimeLimit@ on the "steady clock" (but then the nam...
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10:07 CoCoALib Design #1558 (In Progress): CpuTimeLimit: more frequent clock checks
- Here is the code I used as a speed check:...
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09:38 CoCoALib Design #1558 (Closed): CpuTimeLimit: more frequent clock checks
- The impl of @CpuTimeLimit@ is a bit complicated because the @CpuTime@ function is more expensive than I had expected....
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15:23 CoCoA-5 Feature #1516 (Resolved): substring function
- I have written a (short) manual entry.
Should there be some tests? :-/
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15:16 CoCoA-5 Feature #1516: substring function
- I have written a first version (in @BuiltinFunctions.C@).
* name: *@substring@*; I prefer not to use @sbstr@ as th... -
13:06 CoCoA-5 Feature #1516 (In Progress): substring function
- Start pos and length seem reasonable to me.
Should we also allow the version which goes to end of string? KISS: m... -
13:03 CoCoALib Design #1391 (Closed): RingElems: syntax with [ and ] ?
- I have added some tests (to @test-RingElem5.C@).
All seems OK. Closing. -
11:58 CoCoALib Bug #1484: ker bug (quotientinghom for R/ideal())
- Anna! check ring for empty lists!
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11:56 CoCoA-5 Bug #1539: Website: installation instructions for Microsoft
- add the instruction written by Henry O'Keeffe
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11:53 CoCoA-5 Bug #1512 (Closed): Package with unexpected EOF
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11:51 CoCoA-5 Design #1495 (Closed): Package exporting nothing?
- Tested. OK.
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11:35 CoCoA-5 Feature #1509 (Closed): RingElems with empty input
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11:31 CoCoA-5 Design #1546: Improve 'describe' or 'print' for a function
- And also fix the manual.
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11:30 CoCoA-5 Design #1550 (Closed): version number for CoCoA5 snapshot release?
- For snapshot releases: (Anna) remember to change the links in the webpage.
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11:28 CoCoA-5 Feature #1543 (Closed): Default path for packages
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11:24 CoCoA-5 Design #1530 (Closed): VersionInfo -- better field names?
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11:23 CoCoA-5 Support #1498 (Closed): Export many names or just one?
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11:20 CoCoA-5 Slug #1556: DivAlg slower than NR
- I checked: not as easy as I thought.
@NR@ is defined in @SparsePolyOps-RingElem.C@ and make use of ReductionCog. Th... -
11:19 CoCoA-5 Bug #1527 (Closed): Inadequate error message on incorrect list access
07 Jan 2021
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20:54 CoCoALib Bug #1376: GBasisTimeout: not working as expected
- The relevant source is probably in *@SparsePolyOps-reduce.C@* around line 133.
The timer object is constructed in... -
20:42 CoCoALib Bug #1376: GBasisTimeout: not working as expected
- Setting the timeout to 20s worked very well. Setting it to 25s triggered an interruption after 95s.
Setting it to 9... -
20:19 CoCoALib Bug #1376: GBasisTimeout: not working as expected
- Why are there no test cases for this issue? Without them how can i know if it has been satisfactorily solved?
Usi... -
20:26 CoCoALib Support #1555 (In Progress): Software licence
- Here is a suggestion:
* find out how many different copyright messages we need (headers, source, tests, examples, do... -
20:04 CoCoALib Design #855: Copyright and authorship?
- I have added Bigatti to all files which had just Abbott as copyright holder.
Anna should now add Abbott to all files... -
20:02 CoCoALib Slug #1557 (Resolved): Reading list of rationals is too slow
- There was a bug in my first version of the faster code: @in.get(ch)@ does not put EOF into @ch@ when EOF is reached -...
06 Jan 2021
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11:40 CoCoALib Slug #1557: Reading list of rationals is too slow
- I have found a potentially useful entry on *StackOverflow*: link @https://stackoverflow.com/questions/9272276/can-you...
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11:32 CoCoALib Slug #1557 (In Progress): Reading list of rationals is too slow
- I'm still puzzled: @ScanUnsignedIntegerLiteral@ continue to be slower than whatever the CoCoA-5 interpreter does; cou...
05 Jan 2021
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21:55 CoCoALib Slug #1557: Reading list of rationals is too slow
- The profiler indicates that major costs are @hgcd@ (from GMP) and @ScanUnsignedIntegerLiteral@ (from CoCoALib).
JA... -
21:43 CoCoALib Slug #1557 (Closed): Reading list of rationals is too slow
- Winfried Bruns sent me a file with about 100000 rationals (total size about 130Mbytes).
If I read the file in using ...
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