# TaoALMMGetMultipliers
Retrieve a pointer to the Lagrange multipliers. 
## Synopsis
```
#include "petsctao.h" 
#include "petscvec.h" 
PetscErrorCode TaoALMMGetMultipliers(Tao tao, Vec *Y)
```

## Input Parameters

- ***tao -*** the `Tao` context for the `TAOALMM` solver



## Output Parameters

- ***Y -*** vector of Lagrange multipliers





## Notes
For problems with both equality and inequality constraints,
the multipliers are combined together as Y = (Ye, Yi). Users
can recover copies of the subcomponents using index sets
provided by `TaoALMMGetDualIS()` and use `VecGetSubVector()`.


## See Also
 `TAOALMM`, `Tao`, `TaoALMMSetMultipliers()`, `TaoALMMGetDualIS()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/tao/constrained/impls/almm/almmutils.c.html#TaoALMMGetMultipliers">src/tao/constrained/impls/almm/almmutils.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/tao/constrained/impls/almm/almmutils.c)


[Index of all Tao routines](index.md)  
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