Difference between revisions of "Delta hk"
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Let $\mathbb{T}$ be a [[time scale]] and let $t,s \in \mathbb{T}$. The $h_k$ monomials are defined by the recurrence | Let $\mathbb{T}$ be a [[time scale]] and let $t,s \in \mathbb{T}$. The $h_k$ monomials are defined by the recurrence | ||
$$\left\{ \begin{array}{ll} | $$\left\{ \begin{array}{ll} | ||
| − | h_0(t,s)=1 \\ | + | h_0(t,s;\mathbb{T})=1 \\ |
| − | h_{k+1}(t,s)= \displaystyle\int_s^t h_{k}(\tau,s) \Delta \tau. | + | h_{k+1}(t,s;\mathbb{T})= \displaystyle\int_s^t h_{k}(\tau,s;\mathbb{T}) \Delta \tau. |
\end{array} \right.$$ | \end{array} \right.$$ | ||
Revision as of 00:22, 24 September 2016
Let $\mathbb{T}$ be a time scale and let $t,s \in \mathbb{T}$. The $h_k$ monomials are defined by the recurrence $$\left\{ \begin{array}{ll} h_0(t,s;\mathbb{T})=1 \\ h_{k+1}(t,s;\mathbb{T})= \displaystyle\int_s^t h_{k}(\tau,s;\mathbb{T}) \Delta \tau. \end{array} \right.$$
Graph of $h_2(t,0;\mathbb{Z})$.
Graph of $h_3(t,0;\mathbb{Z})$.
Graph of $h_4(t,0;\mathbb{Z})$.
Graph of $h_5(t,0;\mathbb{Z})$.
Properties
Relationship between delta hk and delta gk
Examples
| $\mathbb{T}=$ | $h_k(t,s;\mathbb{T})=$ |
| $\mathbb{R}$ | $\dfrac{(t-s)^k}{k!}$ |
| $\mathbb{Z}$ | $\displaystyle{t-s \choose k} = \dfrac{(t-s)!}{k! (t-s-k)!}$ |
| $h\mathbb{Z}$ | $\dfrac{1}{k!} \displaystyle\prod_{\ell=0}^{k-1}(t-\ell h-s)$ |
| $\mathbb{Z}^2$ | |
| $\overline{q^{\mathbb{Z}}}, q > 1$ | $\displaystyle\prod_{n=0}^{k-1} \dfrac{t-q^ns}{\sum_{i=0}^n q^i}$ |
| $\overline{q^{\mathbb{Z}}}, q < 1$ | |
| $\mathbb{H}$ |
See also
$\Delta$-special functions on time scales | ||||||
 $\cos_p$ |
 $\cosh_p$ |
 $e_p$ |
 $g_k$ |
 $h_k$ |
 $\sin_p$ |
 $\sinh_p$ |
