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# PetscDualSpaceGetUniform
Whether this dual space is uniform 
## Synopsis
```
#include "petscfe.h" 
PetscErrorCode PetscDualSpaceGetUniform(PetscDualSpace sp, PetscBool *uniform)
```
Not Collective


## Input Parameter

- ***sp -*** A dual space



## Output Parameter

- ***uniform -*** `PETSC_TRUE` if (a) the dual space is the same for each point in a stratum of the reference `DMPLEX`, and
(b) every symmetry of each point in the reference `DMPLEX` is also a symmetry of the point's dual space.





## Note
All of the usual spaces on simplex or tensor-product elements will be uniform, only reference cells
with non-uniform strata (like trianguar-prisms) or anisotropic hp dual spaces will not be uniform.


## See Also
 `PetscDualSpace`, `PetscDualSpaceGetPointSubspace()`, `PetscDualSpaceGetSymmetries()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/dt/dualspace/interface/dualspace.c.html#PetscDualSpaceGetUniform">src/dm/dt/dualspace/interface/dualspace.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/dm/dt/dualspace/interface/dualspace.c)


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