Reputation
616
Next privilege 1,000 Rep.
See votes, expandable usercard
Badges
4 11
Impact
~4k people reached

  • 0 posts edited
  • 0 helpful flags
  • 46 votes cast
Apr
7
asked Is this a serious flaw in Mathematica's default hashing algorithm
Mar
11
awarded  Popular Question
Dec
12
awarded  Yearling
Jul
30
asked Is this behaviour, producing OutputSizeLimit`Dump`encapsulateOutput, a bug?
Jul
18
awarded  Scholar
Jul
18
accepted How can I see more of the Java stack trace when an exception occurs in JLink?
Jul
14
asked How can I see more of the Java stack trace when an exception occurs in JLink?
Dec
3
comment Factoring an ideal in a number field into prime ideals
Thanks -- I guess I should have given a harder example. :-)
Dec
2
revised Factoring an ideal in a number field into prime ideals
linking to sage documentation
Dec
2
asked Factoring an ideal in a number field into prime ideals
Dec
2
comment How is pattern specificity decided?
I think we're talking at cross purposes. I'm not interested, here, in the multiple ways that a single pattern can match a single expression, but rather the rule that Mathematica uses to linearly order the rules in the DownValues of a symbol.
Dec
1
comment How is pattern specificity decided?
When you say "it is unclear to me that this is always true", what exactly do you mean might not be true? That _?f and _?g are always considered incomparable? If so, what values of f and g could results in these being comparable?
Dec
1
comment How is pattern specificity decided?
Hi @Stuart, thanks for your answer, but I'm confused by many of the things you say. Could you explain what you mean by the terms "injective" and "surjective" above? What function are you considering, exactly?
Dec
1
comment Error in NullSpace, with AlgebraicNumber entries
I can confirm that this bug is fixed in v. 10.
Dec
1
awarded  Curious
Nov
30
comment Error in NullSpace, with AlgebraicNumber entries
Time to upgrade, I guess. Lame.
Nov
30
awarded  Commentator
Nov
30
comment Error in NullSpace, with AlgebraicNumber entries
I certainly agree the matrix is full rank. It's mathematica which seems to be having difficulty. :-) Which version are you running on? On 9.0.1.0, I'm definitely seeing rank 12 here.
Nov
30
comment Error in NullSpace, with AlgebraicNumber entries
@bills; oops, I've corrected my claims, now! My original example had been block diagonal, and I cut it down to the relevant block, but forgot to update my post.
Nov
30
revised Error in NullSpace, with AlgebraicNumber entries
oops, correcting size