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The following fails when `--long` is not specified
```
$ sage -t manifolds/differentiable/tensorfield.py
**********************************************************************
File "manifolds/diffe…
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In Sage 9.1.beta0, we have
```
sage: M = Manifold(2, 'M')
sage: M.set_calculus_method('sympy')
sage: X. = M.chart()
sage: X.calculus_method()
Available calculus methods (* = current):
- SR (defau…
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The ArrayInterface 7.0 seems to be a mayor redesign since
https://github.com/JuliaManifolds/Manifolds.jl/actions/runs/4226233487/jobs/7339448739#step:5:725
can not import some parts?
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Currently, an instance of `OpenInterval` just belongs to the category of smooth manifolds even though it is also connected. Similarly for Euclidean spaces and spheres.
The category of connected man…
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Belongs to #30189.
I propose to add a new folder for manifold examples:
`src/sage/manifolds/differentiable/examples`
Furthermore, I suggest we move `euclidean.py` and `real_line.py` to that folde…
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Ahoi hoi folks,
a while back, @jsmentch and I thought about a little project to collect auditory perception models and bring them together in a small python package, comparable to e.g. [THINGSvisio…
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I'm consistently getting these test failures in this module on my Cygwin branch (just rebased on the latest develop branch, but I've had this for a couple weeks now):
```
sage -t --long --warn-long…
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As suggested in [#33232 comment:1](https://github.com/sagemath/sage/issues/33232#comment:1), `./sage --pytest` now uses pytest to discover and run doctests.
To test, run `./sage --pytest src/sage/m…
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Export to the OBJ file format. OBJ is supported by at least Slic3r.
OBJ also opens for exporting objects with multiple materials. Support for this should be synced with availability of corresponding s…
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Is `check_gradient` working properly? I don't seem to have it return true, even on simple functions.
Even taking the sample `f` and `grad_f` from the [docs](https://manoptjl.org/stable/tutorials/Op…