What Is a Matrix Signature and How Is It Determined?

[lukaszh]

Hello,
i can't find anywhere,what is and how to find matrix signature. wikipedia tells only, that signature matrix is matrix with +/-1 on diagonal. For example
1 1 1
1 1 1
1 1 0

how to find signature. THank you :-)

 

[jbunniii]

Hello,
i can't find anywhere,what is and how to find matrix signature. wikipedia tells only, that signature matrix is matrix with +/-1 on diagonal. For example
1 1 1
1 1 1
1 1 0

how to find signature. THank you :-)

Is this what you're looking for?

http://en.wikipedia.org/wiki/Metric_signature#Matrices

 

[HallsofIvy]

Hello,
i can't find anywhere,what is and how to find matrix signature. wikipedia tells only, that signature matrix is matrix with +/-1 on diagonal. For example
1 1 1
1 1 1
1 1 0

how to find signature. THank you :-)

Grammatically, "signature matrix" and "matrix signature" are two different things!

According to the website jbunniii references, the "signature of a matrix" is an order triple of integers: (the number of positives entries on the main diagonal, the number of negative entries on the main diagonal, the number of 0 entries on the main diagonal).