Activity
From 29 Mar 2021 to 27 Apr 2021
27 Apr 2021
- 22:45 CoCoALib Feature #1381: Type ideal for ZZ[x[1..n]]
- I think I have fixed ideal product now: it calls the "clever monomial short-cut" only if the coeff ring is a field (a...
- 21:51 CoCoALib Feature #1381: Type ideal for ZZ[x[1..n]]
- I suspect the example in the previous note is wrong because an ideal is a recognized as "monomial over field" without...
- 20:22 CoCoALib Feature #1381: Type ideal for ZZ[x[1..n]]
- A quick test of ideal product suggests that it does not work properly in @ZZ[...]@...
- 14:05 CoCoALib Feature #1381: Type ideal for ZZ[x[1..n]]
- The CoCoA-5 tests all passed, and I succeeded in creating an ideal in @ZZ[x,y,z]@.
Next thing is to check that som... - 13:56 CoCoALib Feature #1381 (In Progress): Type ideal for ZZ[x[1..n]]
- The relevant source code seems to be around line 364 of @SparsePolyOps-ideal.C@.
I'll try disabling the check insi...
26 Apr 2021
- 16:03 CoCoALib Bug #1590 (Feedback): CRASH: LinKerZZ
- The problem was an incorrectly sized vector; the bug was "hidden" by a poor choice of variable name (was *@row@*, now...
- 15:07 CoCoALib Bug #1590: CRASH: LinKerZZ
- The correct input should have been the transpose of the matrix.
- 15:06 CoCoALib Bug #1590 (Closed): CRASH: LinKerZZ
- Florian reports:...
- 14:07 CoCoALib Support #1555: Software licence
- Currently our copyright notice in source code files says the following (following guidance from FSF about using GPL):...
20 Apr 2021
- 06:54 CoCoALib Feature #1589 (Resolved): IdealOfPoints: allow matrix of points to be defined over "wrong" ring
- Easy to fix for most of the reasonable cases....
- 06:49 CoCoALib Feature #1589 (Closed): IdealOfPoints: allow matrix of points to be defined over "wrong" ring
- This works...
19 Apr 2021
- 20:55 CoCoALib Bug #1585: CRASH/ABORT: GMP overflow
- There are very many cases to consider, esp. if we want to cover all (or almost all) possibilities.
Now I am more i... - 12:03 CoCoALib Bug #1585: CRASH/ABORT: GMP overflow
- How to test if the overflow detection mechanism is working properly (_i.e._ throws an exception instead of causing a ...
- 15:55 CoCoALib Design #855: Copyright and authorship?
- Write something like:...
- 15:53 CoCoALib Design #855: Copyright and authorship?
- To do:
* @TmpFactorDir@
* @TmpHilbertDir@
* etc?
- 14:10 CoCoA-5 Support #448: EmacsUI Source/SourceRegion produce warning on Microsoft Windows 7 Ultimate
- Maybe we can ask Bernhard Andraschko to check; he does have access to a M$ computer.
I have added him as watcher. - 13:55 CoCoA-5 Feature #1431: Juxtaposition of string literals
- Another point in favour of @ConcatStr@ is that it could insert newlines between the strings in a list, rather than re...
- 13:48 CoCoA-5 Feature #1372: New function: find ?
- An important feature of the C++ version of @find@ is that it advances an iterator -- effectively it is "find next".
...
18 Apr 2021
- 22:51 CoCoALib Bug #1585: CRASH/ABORT: GMP overflow
- I have put a first version of @mpz_mul@ with overflow check in @utils-gmp@.
A quick suggests that it is working as e...
15 Apr 2021
- 11:34 CoCoALib Feature #1306: exgcd over integers (ZZ)
- The source code is in *@NumTheory-gcd.C@*.
- 11:25 CoCoALib Bug #1473: isystem not working as expected
- Any update?
- 10:38 CoCoALib Bug #1579 (In Progress): Readexpr/RingElem: unhelpful error message when input is wrong
- I have added a simple extra test: if the first char after the end of the expr is @'^'@, then it prints out a more hel...
- 10:23 CoCoALib Slug #1057: Slug: Polynomial ring contructor slow with (big) matrix ordering
- *Here is a benchmark* (since there was none given earlier:...
- 10:17 CoCoALib Slug #1588: ElimMat is slow
- My guess is that the code repeatedly calls @rank@, but we should be able to be "clever" in some common cases.
Is i... - 10:15 CoCoALib Slug #1588 (New): ElimMat is slow
- @ElimMat@ is rather slow for larger inputs:...
- 09:50 CoCoALib Design #1528: MacOS compilation with clang
- Any progress here?
It is enough to make small steps rather than try to do it all in one go.
Presumably compilatio...
09 Apr 2021
- 13:48 CoCoALib Support #1555: Software licence
- I currently suggest the following:
* add copyright notices to all files (incl. @Makefile@ and other supporting files... - 13:40 CoCoALib Support #1555: Software licence
- As mentioned in #855#note-15 the FSF gives advice at the following URL:...
- 11:59 CoCoALib Design #855: Copyright and authorship?
- Here is a URL to a page by the FSF about copyright notices to assign to works:...
07 Apr 2021
- 18:08 CoCoALib Support #1555: Software licence
- We seem to have used the standard GPL v3.0 for all source code (headers and source):
* in @include/CoCoA/@
* in @sr...
05 Apr 2021
- 15:19 CoCoALib Feature #1210: New Fn: make public "coefficients" (of poly wrt a given PP basis)
- How to impl neatly and efficiently the version @CoeffsWRT(f,QB)@?
Perhaps create a list of pairs (PP,index); sort ... - 15:04 CoCoA-5 Feature #1587: Multiline string literals (again)
- If we do adopt the fn @ConcatStr@ and/or @ConcatStrNewline@ then maybe there should be a modified form of @fold@ whic...
- 13:09 CoCoA-5 Feature #1587: Multiline string literals (again)
- My original thought (that multiline string literals are not so dangerous if we have helpful prompts) is not so helpfu...
- 13:02 CoCoA-5 Feature #1587 (In Progress): Multiline string literals (again)
- As mentioned in #1431#note-9 I have made a first impl of @ConcatStr@, and the result is promising.
Would it make s... - 12:53 CoCoA-5 Feature #1431: Juxtaposition of string literals
- I have just looked at the source code (@Parser.C@ around lines 2135--2150); the old code for juxtaposed strings is st...
02 Apr 2021
- 11:24 CoCoA-5 Feature #1431 (In Progress): Juxtaposition of string literals
- A potential disadvantage of something like *@"abc"+"def"+"ghi"@* is that a naive impl will take quadratic time. I su...
- 11:24 CoCoA-5 Feature #1587: Multiline string literals (again)
- A possible motivation for wanting to allow multi-line strings is...
CoCoA is slow at reading polynomials with many t... - 11:06 CoCoA-5 Feature #1587: Multiline string literals (again)
- If we do not allow multi-line string literals, but we do allow concatenation in the parser then the example in the de...
- 10:59 CoCoA-5 Feature #1587 (Closed): Multiline string literals (again)
- Now that we have more comprehensible "context-sensitive" prompts, one of the reasons for wishing to avoid multi-line ...
- 10:38 CoCoA-5 Support #1287 (Feedback): Better err mesg for easy typo in ring definition
- Anna approved this change during discussions. The warning has been reworded:...
- 10:27 CoCoALib Bug #1585: CRASH/ABORT: GMP overflow
- Which functions should test for overflow?
@power@ and multiplication certainly. Which others?... - 09:55 CoCoA-5 Support #1507 (Feedback): wordlist without OBSOLETE entries?
- Anna agrees with the proposal. Checked in.
- 09:54 CoCoA-5 Slug #1506 (Feedback): Remove XMLFileName from Main.C
- Anna agrees that the check seems to about something ancient, and should be disable/removed.
Currently comment out --... - 09:28 CoCoA-5 Support #1586 (In Progress): Profiling with clang
- pg does not work....
- 08:54 CoCoA-5 Design #1493 (Closed): Automatic ring mapping in assignment?
- John Abbott wrote:
> I have revised the manual entry for @matrix@. I did note that in the examples @mat@ is used ra...
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