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References to 'extremum'
1. arg min and arg max by kshum
2. completing the square by mathcam
3. convex function by matte
4. derivative operator is unbounded in the sup norm by cvalente
5. differential geometry by rspuzio
6. Dirichlet conditions by mathwizard
7. Euler-Lagrange differential equation (advanced) by rspuzio
8. Euler-Lagrange differential equation (elementary) by rspuzio
9. example needing two Lagrange multipliers by pahio
10. extended discussion of the conjugate gradient method by ehremo
11. extremum points of function of several variables by pahio
12. Fermat's theorem (stationary points) by paolini
13. Fourier series in complex form and Fourier integral by pahio
14. geometry by rspuzio
15. gradient by CWoo
16. Hessian form by PrimeFan
17. Hessian matrix by cvalente
18. high school mathematics by matte
19. Hough transform by madmortigan
20. Lagrange multipliers on manifolds by stevecheng
21. local homeomorphisms between real numbers by joking
22. local minimum of convex function is necessarily global by stevecheng
23. methods to find extremum by bloftin
24. proof of arithmetic-geometric means inequality using Lagrange multipliers by stevecheng
25. proof of Bernoulli's inequality by danielm
26. proof of Darboux's theorem by paolini
27. proof of Fermat's Theorem (stationary points) by paolini
28. proof of Rolle's theorem by rmilson
29. relations between Hessian matrix and local extrema by bshanks
30. saddle point approximation by msihl
31. secant method by bloftin
32. tests for local extrema in Lagrange multiplier method by stevecheng
33. three theorems on parabolas by CWoo
34. unstable fixed point by mathwizard