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frechet_derivative [2014/01/31 11:59]
nikolaj
frechet_derivative [2016/12/29 16:31]
nikolaj
Line 1: Line 1:
 ===== Fréchet derivative ===== ===== Fréchet derivative =====
 ==== Set ==== ==== Set ====
-| @#88DDEE: $X,Y$ ... Banach spaces with topology | +| @#55CCEE: context ​    | @#55CCEE: $X,Y$ ... Banach spaces with topology | 
-| @#88DDEE: $\mathcal O$ ... open in $X$ |+| @#55CCEE: context ​    | @#55CCEE: $\mathcal O$ ... open in $X$ | 
 +| @#FFBB00: definiendum | @#FFBB00: $D:​\mathrm{Continuous}(\mathcal O,Y)\to \mathrm{Continuous}(\mathcal O,​\mathrm{BoundedLinOp}(X,​Y))$ | 
 +| @#FFBB00: definiendum | @#FFBB00: $Df:​=x\mapsto J_x^f$ |
  
-| @#FFBB00: $D:​\mathrm{Continuous}(\mathcal O,Y)\to \mathrm{Continuous}(\mathcal O,​\mathrm{BoundedLinOp}(X,​Y))$ | +For $J_x f$, see [[Linear approximation]]. 
-| @#FFBB00: $Df:​=x\mapsto L_x^f$ | +
- +
-For $L_x f$, see [[Fréchet derivative at a point]]. +
  
 ==== Discussion ==== ==== Discussion ====
-This defintion ​does nothing more than emphasizing the functionality of $L_x^f$ in $f$.+This definition ​does nothing more than emphasizing the functionality of $L_x^f$ in $f$.
  
 === Reference === === Reference ===
 Wikipedia: [[http://​en.wikipedia.org/​wiki/​Derivative_of_a_function|Derivative of a function]], [[http://​en.wikipedia.org/​wiki/​Fr%C3%A9chet_derivative|Fréchet derivative]] Wikipedia: [[http://​en.wikipedia.org/​wiki/​Derivative_of_a_function|Derivative of a function]], [[http://​en.wikipedia.org/​wiki/​Fr%C3%A9chet_derivative|Fréchet derivative]]
 ==== Parents ==== ==== Parents ====
-=== Requirements ​=== +=== Context ​=== 
-[[Fréchet derivative at a point]]+[[Linear approximation]]
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