I'm reading a paper about a method with finite elements on Stoke's equation, and I found something I hadn't seen before.
What does $\epsilon$(w) mean?
Thanks in advance.
2026-03-26 04:29:21.1774499361
Average of a vector-valued function over an interior edge - Finite elements
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Solved, is the scalar average of w
https://math.okstate.edu/people/yqwang/publications/2011-sisc-aposterioriHdiv.pdf