:orphan:
# TaoLMVMGetH0
Get the matrix object for the QN initial Hessian 
## Synopsis
```
#include "petsctaolinesearch.h" 
PetscErrorCode TaoLMVMGetH0(Tao tao, Mat *H0)
```

## Input Parameter

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



## Output Parameter

- ***H0 -*** `Mat` object for the initial Hessian





## See Also
 `Tao`, `TAOLMVM`, `TAOBLMVM`, `TaoLMVMSetH0()`, `TaoLMVMGetH0KSP()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/tao/bound/impls/blmvm/blmvm.c.html#TaoLMVMGetH0">src/tao/bound/impls/blmvm/blmvm.c</A>


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


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