Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2007
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2007

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Change multiplication operations into convolution operations

  • To: mathgroup at smc.vnet.net
  • Subject: [mg73605] Re: Change multiplication operations into convolution operations
  • From: dh <dh at metrohm.ch>
  • Date: Fri, 23 Feb 2007 04:26:45 -0500 (EST)
  • References: <erjp4f$pt3$1@smc.vnet.net>


Hi Liang,

you coul e.g. try:

C1 F1[t] F2[t] + C2 F3[t] F4[t] F1[t] //. Times[c___, a_[t_], d___, 

b_[t_], e___] -> c d e a[t] \[Star] b[t]

Daniel



Zhao, Liang wrote:

> If I want to change the multiplication operations  into convolution

> operations in an arbitrary function such as

> C1 F1[t] F2[t] + C2 F3[t] F4[t] F1[t],

> where Fi(t) represents functions of t and Ci represents constant, into

> C1 F1[t] * F2[t] + C2 F3[t] * F4[t] * F1[t], where "*" indicate

> convolution.

> 

> any good elegant way to do it? High appreciations!

> 

> Liang

> 

> 

> 




  • Prev by Date: Re: Change multiplication operations into convolution
  • Next by Date: Re: split
  • Previous by thread: Change multiplication operations into convolution operations
  • Next by thread: Re: Change multiplication operations into convolution operations