slepc-3.21.2 2024-09-25
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# BVGetSignature

Retrieves the signature matrix from last orthogonalization.

### Synopsis

    #include "slepcbv.h"
    PetscErrorCode BVGetSignature(BV bv,Vec omega)

Not Collective

### Input Parameter

| bv | - the basis vectors context

### Output Parameter

| omega | - a vector representing the diagonal of the signature matrix

### Note

The signature matrix Omega = V'*B*V is relevant only for an indefinite B.

### See Also

BVSetMatrix(), BVSetSignature()

### Level

developer

### Location

src/sys/classes/bv/interface/bvbasic.c
Index of all BV routines
Table of Contents for all manual pages
Index of all manual pages