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The lsoda method in solve_ivp does not honor uband and lband for banded jacobians.
#### Reproducing code example:
lsoda will never check the jacobian for a nonstiff problem, so I used the clas…
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This issue is meant for a central place for our Fortran (almost exclusively F77) codebase to track per module and if possible remove depending on contributor affinity to the subject matter and fortran…
ilayn updated
1 month ago
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Fairly regularly (in teaching) I need to turn a second order ODE to a first order one. I'm surprised tuples can't be used to do this, see below. I also don't understand the conceptional reason why: t…
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@ChrisRackauckas have you seen this work by Ricky already?
https://arxiv.org/abs/2009.09457
**"Hey, that's not an ODE": Faster ODE Adjoints with 12 Lines of Code**
Patrick Kidger, Ricky T. Q. C…
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This is basically taken from #1136. Currently, our idea is to merge the `DGMulti` setup from that PR into `dev`, draft a corresponding `TreeMesh` & `DGSEM` version in another PR, and see how it looks …
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Hello there,
When I try to run soil_incubation.stan with the example data from the SoilR package (https://mc-stan.org/users/documentation/case-studies/soil-knit.html), I get the following error:
…
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### Describe your issue.
I have a colleague who is attempting to use `odeint` to integrate a differential equation. This produces a large volume (>100k lines) of warning messages that, whilst real,…
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Not sure if this is the right place to post, but posting here since Catalyst seems only place related to Chemical reactions. I recently across paper deriving unknown chemical reaction pathways using n…
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### Proposal
Update the adaptive step-size algorithm to capture the stability and conditioning improvements demonstrated in [1].
Feedback would be much appreciated on the technical details of the …
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### Description
Found an issue while investigating #9131. When enabeling symbolic Jaconian for the test model `Rexroth_Valves_Test.Valves_4WR.Rexroth_4WSE2ED10_5X_5.VC43_PO_TC11a` the symbolica Jac…