Evgeni Burovski

ENH: linalg: low-level batching support in `solve`

1

#### Reference issue Follows up gh-22924. #### What does this implement/fix? Add low-level support for batched inputs in `linalg.solve`. The approach is the same as in gh-22924. #### Additional information...

#### Reference issue on top of https://github.com/scipy/scipy/pull/23020 #### What does this implement/fix? Convert - [x] `make_lsq_spline` - [x] `make_smoothing_spline` - [x] `make_splrep` - [x] `make_splprep` - [x] `generate_knots` to be...

Should meshgrid return a list or a tuple of coordinate arrays?

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The spec stipulates that `meshgrid` returns a list of arrays, https://data-apis.org/array-api/draft/API_specification/generated/array_api.meshgrid.html NumPy and Pytorch, however, return tuples. Jax and CuPy return lists. Makes me wonder if specifying a list is...

docs: `default_device()` can be `None`

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closes gh-923. Per discussion in the community meeting, https://hackmd.io/zn5bvdZTQIeJmb3RW1B-8g#Meeting-minutes-15-May-2025 and the resolution of https://github.com/data-apis/array-api/issues/923#issuecomment-2885639657, spell out explicitly that `None` is an allowed return value of the `default_device`.

RFC: allow scalars and 0D arrays in `concat`

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The following patterns are quite common [1]: `x = np.r_(x[0], x, x[-1])` and `x = np.r_[0, x]`. Neither of these can be directly replaced by `xp.concat` because the latter requires...

The current docs [1] only state that _If a tuple of integers, the number of non-zero values must be computed over multiple axes._ [1] https://data-apis.org/array-api/draft/API_specification/generated/array_api.count_nonzero.html While one could argue that...

Add non-symmetric eigenvalue solvers, `eig` / `eivals`, to the linalg extension

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Currently the linalg extension only contains symmetric/hermitian eigenvalue routines, `eigh` and `eigvalsh`. The general/non-symmetric versions are missing. IIUC one reason for the omission is that the low-level routines were not...

clarify if `__array_namespace_info().default_device()` can be None

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The spec only says it returns _an object corresponding to the default device_. ( https://data-apis.org/array-api/latest/API_specification/generated/array_api.info.default_device.html#array_api.info.default_device) `jax.numpy` returns `None`, so the question is whether `None` corresponds to the default device or...

docs: format RFC 2119 keywords

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aims to address https://github.com/data-apis/array-api/issues/397, https://github.com/data-apis/array-api/issues/796 typeset RFC 2119 magic keywords (should/must/must not) in lowercase italics; the preference in gh-397 seems to avoid ALLCAPS. No specific preference for italics either, can...

Hypothesis reported failures are sometimes hard to diagnose, even though our assertions go to incredible lengths to give useful diagnostics. It is often not easy to reproduce an exact set...