May I ask whether there is any documentation of the class IntegrationRuleSpace? For example, for a given input order, what quadrature rule does it use? Can it be used to define BilinearForm?
A typical usecase for the IntegrationRuleSpace are internal variables, such as in elastoplasticity. Here is a tutorial on that:
https://docu.ngsolve.org/latest/i-tutorials/unit-6.3-plasticity/plasticity.html
Thanks for your reply. I see this tutorial on the website. I am just wondering whether I can use IntegrationRuleSpace for other purposes that is not covered in the doc for more flexibility?