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semidefinite+matrix+multiplication
2017年1月21日4 個答案
I see on Wikipedia that the product of two commuting symmetric positive definite matrices is also positive definite. Does the same result hold for the ...

In other words, a matrix is positive-definite if and only if it defines an inner product. Positive-definite and positive-semidefinite matrices can be ...

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2017年9月7日8 個答案
Is the multiplication of positive definite and negative definite matrix is a positive definite matrix even if they do not commute.
2018年8月25日 — In Theorem 3 in this paper, https://core.ac.uk/download/pdf/82822897.pdf, ``On a product of positive semidefinite matrices, A.R. Meenakshi, ...
2011年12月7日4 個答案
Consider the matrix H=HT, H>0, H∈Rn×n, and the vector v∈Rn. In a numerical algorithm, I need to compute the product b=Hv. Right now I am following ...
A square matrix is positive definite if pre-multiplying and post-multiplying it by the same vector always gives a positive number as a result, ...
Positive semidefinite matrices form a cone, where a cone is a subspace closed under addition and multiplication by nonnegative scalars, which implies the ...