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To my surprise, computing the Chow group spends most of the time comparing cones instead of doing linear algebra. 3/4 of the time is spent in `PosetElement.__eq__()`:
```
return self.parent() ==…
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In this example, both schemes are empty, so they should be equal as subschemes of P^2. However...
```
sage: P2. = ProjectiveSpace(2, QQ)
sage: P2.subscheme([x,y^2,z]) == P2.subscheme([x,y,z])
False…
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```
File "src/sage/schemes/cyclic_covers/cycliccover_finite_field.py", line 1130, in sage.schemes.cyclic_covers.cycliccover_finite_field.CyclicCover_finite_field.frobenius_polynomial
Failed example…
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During install when the examples for Numerical Algebraic Geometry run, from time to time I get a this result.
/var/tmp/portage/sci-mathematics/Macaulay2-1.7_pre/work/M2/StagingArea/x86_64-Linux-Gento…
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In [https://arxiv.org/abs/0909.2808](https://arxiv.org/abs/0909.2808), Stoll proves that there exists a minimal representative of a point cluster. A point cluster is a formal sum of points of projec…
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Let `C` be a plane projective curves over a finite field `k` and `S` a finite set of `k`-sections of the curve. It would be nice if Sage could compute a lifting of the plane curve to a `p`-adic ring…
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We discovered in #33134 that `hilbert_numerator()` can return different results with `algorithm="singular"` and the default `algorithm="sage"`:
```
sage: n=4; m=11; P = PolynomialRing(QQ,n*m,"x")
s…
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In the wake of #23671, a meta-ticket to record some proposed improvements to hypergeometric motives. Please add suggestions to this list, and make individual tickets for individual changes.
- E…
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The Calcium implementation of `QQbar` becomes increasingly important for OSCAR. So it needs to be properly documented.
Searching for "QQbar" kind of works but only leads to the [Nemo docs](https:/…
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It seems that `neglex` used there isn't the right order, for it's not even a Groebner basis order. See
https://ask.sagemath.org/question/51851/toric-ideal-of-point-configuration-yielding-whole-ring…