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## Summary
### Steps to reproduce the issue
```console
from pyomo.environ import *
from pyomo.dae import *
from pyomo.dae.simulator import Simulator
def create_model():
m = …
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The following system simulates correctly without the event. The event affect function of the event is empty, so I would have expected it to have no effect.
```julia
using ModelingToolkit, OrdinaryDi…
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Sometimes a system of equations will have algebraic loops that causes them to be seen as DAE's by the compiler. The process of doing the algebraic manipulation, to turn the system of DAE's into a syst…
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Applying the index-reduction algorithm (Pantelides,1988) to a high index DAE to convert it to an ODE, introduces hidden constraints. Since in FMI for ModelExchange, only ODE are supported, the index r…
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### SETUP
OpenModelica 1.21.0
OMSimulator 2.1.1~188-gaf996ad-linux
MSL 3.2.3
ExternalMedia 3.3.2
### MODEL
~~~
model EM_prova_004
package Medium
extends ExternalMedia.Media.CoolPr…
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**I tested the IKfast for my own robot,
But sometimes it seems could not give the full solutions:
sometimes output 4 or 2 solutions, less than 8 as below**
**The solutions piture:**
 about ModelingToolkit.jl and that I u…
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We are trying to generate a Lookat3D IK solver for HERB's two degree-of-freedom pan/tilt head. IKFast generates invalid C code that produces the following compilation error:
```
error: too many initi…
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Some nonlinear problems can be very efficiently solved with non-standard methods, possibly abusing the specific structure of the problem. To allow users to efficiently utilize such methods in tandem w…
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Hi,
I am quite new with Modelica, but when I am trying to simulate the CoolProp models, Dymola gives an error about not being able to find a function.
This is the error message I get when trying t…