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**Lots** of stuff has changed in Singular 4.
This is a big update.
Build system completely changed, and a lot of internal stuff.
Original upstream tarball at `www.mathematik.uni-kl.de/ftp/pub/Math…
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It's time we update; Debian already uses matplotlib 2.0.0.
For matplotlib 2.1.0 we need to update `setuptools_scm` and two new dependencies `backports.functools_lru_cache` and `subprocess32`.
Tarb…
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#12630 has introduced tools to compute with quiver algebras and quiver representations. It is all Python code, paths being internally stored by lists of labelled edges of digraphs.
The aim of this …
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Migrate to sphinx 3.
The attributes `todo_all_todos` and `citations` were previously
implicitly initialized by sphinx. That changed in sphinx 2.1 due to some
refactoring:
https://github.com/sphinx…
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EDIT: In the original ticket description, I stated: "I believe that a backwards incompatible change of pickling is a blocker for Python-3 support." In that (and ONLY in that) sense I believe this ti…
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Implement transformations to put a general cubic (with a point) into Weierstrass form:
```
sage: R. = QQ[]
sage: EllipticCurve(u^3+v^3+w^3, [1,-1,0])
Elliptic Curve defined by y^2 + 2*x*y - 1/3*…
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With this branch, the default value of `--optional` in `sage -t` is larger than the list of installed new-style optional packages.
In particular, `cplex` and `gurobi` (which are not optional packag…
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```
FF = IntegerModRing(29)
tester = FF._tester()
list(tester.some_elements(CartesianProduct(FF, FF, FF)))
```
This should give a list of 3-arrays of elements of Z/29. Instead I get:
```
sage: FF …
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This ticket implements:
- Support for full subcategories defined by an axiom (Finite,
Infinite, Facade, Commutative, Associative, Unital, Inverse,
Distributive, NoZeroDivisors, Division, Finite…
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This ticket uses coercion to find suitable parents for the arguments to `Matrix.solve_right` in order to solve these problems:
```
sage: A = matrix(QQ, 2, [1, 2 ,3, 4])
sage: b = vector(RDF, [pi, e…