MutableMatrix multiplication bug
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- Dominant language
- Macaulay2
- Stars
- 435
- Forks
- 297
- Avg merge
- 4d 20h
- Merged PRs (30d)
- 11
Description
```
i1 : R=frac(QQ[x])[y]
o1 = R
o1 : PolynomialRing
i2 : a=mutableMatrix{{x}}
o2 = | x |
o2 : MutableMatrix
i3 : b=mutableMatrix{{y}}
o3 = | y |
o3 : MutableMatrix
i4 : a*b
o4 = | 1127510310816062349084802013071819938...3887237698090958848/0x2 |
o4 : MutableMatrix
```
(I had to abbreviate the output because it was over 65k characters...)
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the transcript with R=frac(QQ[x])[y] and the 1x1 MutableMatrix values x and y, then trace the MutableMatrix multiplication entry point. Compare the result with the expected product and add a regression test that prevents the oversized incorrect output.
Written by the indexing model from the issue text.
Assessment
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100