how to understand the degree of freedom in the computation electronmagnetic?

I see there's been many views but no replies

In the way you have stated your question I cant help you and I'm guessing by the lack of responses others dont understand your question either
Would you like to clarify what you are referring to/experimenting with to give us all some understanding of your problem/query

Dave

thank you very much. I am working in the MOM about the high order basic functions these days,but i dont know what does the degree of freedom in an element mean.