tobolar

> somehow I don't understand your example Yes, physically this makes no sense. For more "reality" look, there could be e.g. a gravity force. But to show the component's functionality,...

> Yes, physically this makes no sense. I have to correct myself. An equivalent example is gearR2T - gearRotational - gearR2T, such as  So this is indeed a realistic...

> Should it be added to `ModelicaTest.Translational.AllComponents`? IMO the functionality is fully covered with provided test case.

> But why a new component? Why not use the mentioned combination? IMO this is an equivalent to rotational gear and, thus, a base element missing so far. Moreover, as...

So, I have renamed the element, changed the icon and the example and adapted the documentation. Hope this make it more understandable.

> Or also https://github.com/modelica/ModelicaStandardLibrary/pull/3725#issuecomment-762969249 I would proceed with Constraints once #3725 is merged.

I have started to apply the inheritance properly but see currently two problems. 1. I really stumble on the usage of `cardinality` in the MultiBody classes. It is generally used...

> It should (?) be egal Modelica to overwrite the description in the extends statement... @beutlich Thanks, I will use this.

I started this a long time ago but let it be due to lack of time. Will try to recall.

There is a possible candidate for implementation realized in the [Modelica_LinearSystems2](https://github.com/modelica/Modelica_LinearSystems2) library: [Modelica_LinearSystems2.WorkInProgress.Math.Complex.Matrices.inv](https://github.com/modelica/Modelica_LinearSystems2/blob/master/Modelica_LinearSystems2/WorkInProgress/Math/Complex/Matrices/inv.mo)