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References to 'positive definite'
1. best approximation in inner product spaces by asteroid
2. Cholesky decomposition by gufotta
3. conjugate gradient algorithm by aplant
4. differential geometry by rspuzio
5. extended discussion of the conjugate gradient method by ehremo
6. generalized Fourier transform by bci1
7. Hadamard product by bbukh
8. Hessian matrix by cvalente
9. linear least squares fit by rspuzio
10. M-matrix by kshum
11. matrices of special form by matte
12. matrix factorization by mathcam
13. multidimensional Gaussian integral by Mathprof
14. multivariate gamma function (real-valued) by rspuzio
15. orthogonal group by djao
16. relations between Hessian matrix and local extrema by bshanks
17. square root of positive definite matrix by rspuzio
18. table of generalized Fourier and measured groupoid transforms by bci1
19. tests for local extrema in Lagrange multiplier method by stevecheng