Result stated and proved in the source manuscript; website restatementfusion-reconstruction
Statement
In a specified module realization class supporting graph closure, assume closable, closed, , closability of the graph lift in that class, and the module relative-coercivity estimate. Then is closable and .
Meaning and scope
The chosen module operator category is part of the hypothesis. This statement does not automatically supply regularity or adjointability for unbounded module operators.