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At #17435, I noticed the following:
```
sage: L. = FreeAlgebra(GF(25,'t'), implementation='letterplace')
sage: p = x^4+x*y*x*z+2*z^2*x*y
sage: for i in range(20):
....: m = get_memory_usage()
.…
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The following is unexpected:
```
gap> LoadPackage( "SingularInterface", false );;
gap> Singular("int x=42;");
true
gap> SingularValueOfVar("x");
42
gap> Singular("proc HACK(){return(x);}");
true
gap>…
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Here are some thoughts on how to do anonymized k-means clustering.
As a little background, the data returned by a K-means algorithm includes three categories:
1. Some stats about the resu…
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I was trying to do a simple example on page 51 of Atiyah-Macdonald using Sage, and it fails:
```
R. = QQ[]
I = R.ideal([x*y - z^2])
A. = R.quotient(I)
p = A.ideal([x,z])
p.primary_decomposition()
`…
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### Steps To Reproduce
In a fresh sage session, run
```
sage: R. = ZZ[]
sage: M = matrix(R,[[x,y,x],[x^2+z,y^2,x+y-z]])
sage: from sage.libs.singular.function import singular_function
sage: st…
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the point is that is_zero_row for ZZ should be done via
- get the pointer of the row (no c-call!)
- check if the entries are binary zero (no c-call)
Currently it uses 2 c-calls per entry hence th…
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## Deadlines
- Oscar book needs to be ready **31 January 2024** (or maybe even earlier)
- anything relevant for the book (and examples in it) should be settled before
- the proposal is submitted …
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#### Output of `cutechess --version`
Cute Chess 1.2.0
#### Steps to reproduce
1. Game > New...
2. Variant: Atomic, FEN string: `r3k2R/4K3/8/8/8/8/8/8 b q - 0 1`, click OK
3. Try to castle lon…
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So far I can't find the numbers and country names on the interactive map. Why? The cases have been known for several hours.
The first time there are 2 confirmed infections in Austria. This was ann…
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On FreeBSD (tested on 14.0) with a `passthrough` mount, the `getcwd()` function
returns ENOENT (No such file or directory) if the current directory (or any of
its path components) is itself a mount …