# PETSCDUALSPACEBDM
"bdm" - A `PetscDualSpace` object that encapsulates a dual space for Brezzi-Douglas-Marini elements 

Note: This type is a constructor alias of `PETSCDUALSPACELAGRANGE`.  During
`PetscDualSpaceSetUp()`, the correct value of `PetscDualSpaceSetFormDegree()` is
set for H-div conforming spaces. The type of the dual space is then changed to
to `PETSCDUALSPACELAGRANGE`.


## See Also
 `PetscDualSpaceType`, `PetscDualSpaceCreate()`, `PetscDualSpaceSetType()`, `PETSCDUALSPACELAGRANGE`, `PetscDualSpaceSetFormDegree()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/include/petscfe.h.html#PETSCDUALSPACEBDM">include/petscfe.h</A>


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[Index of all FE routines](index.md)  
[Table of Contents for all manual pages](/docs/manualpages/index.md)  
[Index of all manual pages](/docs/manualpages/singleindex.md)  
