Every real symmetric matrix is positive definite if det > 0
Is this true?
No — it is false.
Others that fail the same way
From Inner Product Spaces and Forms › Quadratic forms, positive definiteness, Sylvester's law
Is this true?
Every real symmetric matrix is positive definite if det > 0
No — it is false.
From Inner Product Spaces and Forms › Quadratic forms, positive definiteness, Sylvester's law