Petar Mlinarić

StationaryModel with multiple right-hand sides

4

See https://github.com/pymor/pymor/discussions/1608

Developer instructions for conda

1

We should add developer instructions for conda (see [here](https://github.com/conda/conda-build/issues/4251#issuecomment-1053460542)).

It might be useful to add a pull request template. [Here](https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/creating-a-pull-request-template-for-your-repository) are instructions for how to do it. There are also examples from [NumPy](https://raw.githubusercontent.com/numpy/numpy/main/.github/PULL_REQUEST_TEMPLATE.md) and [SciPy](https://raw.githubusercontent.com/scipy/scipy/main/.github/PULL_REQUEST_TEMPLATE.md).

Currently, there is an option to store a (matplotlib) visualization as VTK file(s). It would be a nice feature to be able to programmatically store a single visualization as an...

Since #2053 is merged, it would be good to use iterable time stepping, e.g., in `impulse_resp` and `step_resp`.

For example, the clamped beam model from the [SLICOT benchmark](https://www.slicot.org/20-site/126-benchmark-examples-for-model-reduction) has the A matrix of size 348x348 stored in a sparse format, but more than 50% of the entries are...

[`src/pymor/models/iosys.py`](https://github.com/pymor/pymor/blob/c2330ed370881272ef36bd91b2f0394d35513565/src/pymor/models/iosys.py) is quite long (currently, it has 3165 lines). It might be good to break it into multiple modules, e.g., `lti`, `so`, `ph`, `delay`, `bilinear` under `pymor.models` (or under `pymor.models.iosys`)....

Models with componentwise nonlinearities, i.e., functions $f : \mathbb{R}^n \to \mathbb{R}^n$ of the form $f(x) = (g(x_1), g(x_2), \ldots, g(x_n))$ for some scalar function $g$, seem to be common enough...

Use models.examples in tests and demos

1

In tests, there is [`pymortests.reductors.loewner.make_fom`](https://github.com/pymor/pymor/blob/d0e95a7f926c9af201522100b0af2c5ca9b939ed/src/pymortests/reductors/loewner.py#L64), which is used in multiple places. For demos, it might be useful to move the models to `models.examples`.

Riccati solvers with S parameter

2

**Feature** Low-rank solvers and the dense solver from `pymess` should be extended to support the `S` parameter. **Notes** The Riccati equation $$A X E^T + E X A^T - \left(E...