quasiconcaveandquasiconvex

2022年12月6日—Supportpropertyforquasiconcaveandquasiconvexfunctions,su-portviamaximization,borderedHessiantest–page32.Page2.2.MATHMETHODS.,Let'sconsideraconvexsetΩ⇢IRnandthefunctionf:Ω!IRrealfunction.Definition(quasi-concave)fisquasi-concaveifforeveryrealnumberathe ...,由XVilà著作·2022—Considerthefunctionf(x)=x3,itisquasiconcave(andquasiconvex)butnotconcave.(norconvex).Remark36.fquasiconcave⇔−...

參考資訊如下
21. Concave and Quasiconcave Functions

2022年12月6日 — Support property for quasiconcave and quasiconvex functions, su- port via maximization, bordered Hessian test – page 32. Page 2. 2. MATH METHODS.

CONCAVE and QUASI

Let's consider a convex set Ω ⇢ IRn and the function f : Ω ! IR real function. Definition (quasi-concave) f is quasi-concave if for every real number a the ...

Notes on Concavity, Convexity, Quasiconcavity and ...

由 X Vilà 著作 · 2022 — Consider the function f(x) = x3, it is quasiconcave (and quasiconvex) but not concave. (nor convex). Remark 36. f quasiconcave ⇔ −f ...

Quasiconvex function

A (strictly) quasiconvex function has (strictly) convex lower contour sets, while a (strictly) quasiconcave function has (strictly) convex upper contour sets. A ...

What's the difference between quasi

2017年11月1日 — Functions f:R→R which are both quasiconcave and quasiconvex are precisely monotonic functions. In higher dimensions they are called quasi- ...

[凸分析] 任意遞增函數為quasiconcave 與quasiconvex

2017年12月24日 — Theorem: 令f:R→R 為遞增函數，則f 同時為quasiconcave 與quasiconvex。

【数学思维】Quasi-convex and quesi

2023年1月7日 — 【数学思维】Quasi-convex and quesi-concave · 每个convex function也一定是quasi-convex的，每个concave function也一定是quasi-concave的。 · concave ...

擬凸函數

擬凸函數（Quasiconvex function）是一類定義在實向量空間的區間或凸子集上的實值函數，且滿足對任意實數 a -displaystyle a} -displaystyle a} ...