Activity
From 13 Feb 2015 to 14 Mar 2015
13 Mar 2015
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14:50 CoCoA-5 Feature #674: Ring constructor: allow empty range for indices?
- John Abbott wrote:
> I understand your point.
> Actually, I suppose the correct solution is to use anonymous ind... -
14:35 CoCoA-5 Feature #674 (In Progress): Ring constructor: allow empty range for indices?
- I understand your point. Actually, I suppose the correct solution is to use anonymous indets for the dummies, but we...
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- John Abbott wrote:
> There would be no technical problem allowing a range such as 1..0; perhaps the main question is... -
- There would be no technical problem allowing a range such as 1..0; perhaps the main question is whether the gain in e...
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- I am writing a CoCoA-5 program which may need some "dummy" variables. My code looks like this:...
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- After speaking to Anna about it on Skype, we decided that it is simplest to call the function @adj@ (in the same way ...
11 Mar 2015
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- The relevant source code is @Parser.H:156@
The following rule may help identify the "type" of a parser token:
* s... -
- The generic error message...
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- It works... more or less. @A["weights"]@ gives the error I wanted, but @A.weights@ still gives a less helpful error....
10 Mar 2015
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- At the moment I have implemented @setField@ and @setFieldNoCheck@; the latter is just the old fn renamed. The new fn...
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- In @Interpreter.H:718@ the mem fn @setField@ is declared as @virtual@; why??
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- Relevant source code is @Lexer.C:615@ and following lines.
Already have a prototype; currently prints out # instea... -
- The EmacsUI really seems to do strange things when the input contains unprintable chars. I am guessing that it is th...
09 Mar 2015
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- Other chars which give trouble include those with ASCII code 3, ...
[to be completed]
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- I created a file (@CRASH.cocoa5@) containing the following:...
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- In some cases emacs splits (top+bottom) swapping the buffers, i.e. *cocoa5* at the bottom.
Investigate and fix. -
- I was thinking that the substitution for unprintable chars would occur only when printing out source code for the pur...
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- John Abbott wrote:
> A very simple idea would be to replace unprintable characters by a single printable character (...
06 Mar 2015
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- After speaking to Anna by Skype we have decided:
* Anna will remove the keyword @weights@ (from interpreter and UIs)... -
- I should also modify @RECORD::setField@ so that it gives an error if the field name is not a valid identifier for CoC...
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- This is trickier than I originally thought.
The way the CoCoA-5 interpreter is designed a keyword is always seen a... -
- A very simple idea would be to replace unprintable characters by a single printable character (_e.g._ @?@) this would...
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- While doing some "fuzz" testing with CoCoA-5 I noticed that error messages seemed to indicate the wrong columns; then...
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- I tried a "fuzzing" test with CoCoA-5 (feeding the executable as input).
CoCoA-5 treats a NUL (ASCII code 0) as end-...
05 Mar 2015
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- The involved lines are:...
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- The problem arose when Claudia Fassino worked with @PreprocessPoint@, and had trouble getting the value of @P.weights...
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- In CoCoA-4 "Weights" was used to set weights in a polynomial ring construction.
Now weights are dealt with in a comp...
04 Mar 2015
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- Factorizing in @F_q[x]@ is largely the same as factorizing in @F_p[x]@; the algorithm is essentially the same (but co...
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- John Abbott wrote:
> The squarefree decomposition is the normal first step, but there are other problematic steps (_... -
- The squarefree decomposition is the normal first step, but there are other problematic steps (_e.g._ mapping down to ...
02 Mar 2015
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- (if I remember well)
The problem about factorizing a multivariate polynomial in finite characteristic was just the s...
27 Feb 2015
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- I now think that the problem may really be imprecise documentation.
19 Feb 2015
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- It seems that *both* @RatReconstructByContFrac@ and @RatReconstructByLattice@ *fail* on (1,N) for N < 1145. Then the...
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- I ran the following to compare when ContFrac and Lattice methods are better...
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- @RatReconstructByLattice(1,1145)@ returns failure -- why??
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- Part of the definition of IsFactorClosed in BuiltInFunctions should be moved into CoCoALibSupplement (I will do it soon)
13 Feb 2015
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- Right now I do not recall why we think it is a good idea to have all object files in a single directory.
Pro:
* e... -
- Here is an example I found on the internet; it uses GNU make's VPATH facility:...
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- When char=2 we can readily use (binary) integers to represent field elements.
The idea is to find a generator @theta... -
- Mario will try to put all his source code in his own namespace (perhaps called @involutive@), and will put all his fi...
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