Properties of delta function












0












$begingroup$


Consider two arbitrary sets of coordinates $z_0$ and $z$ in some space, mapped via some
$bar{z} :$=$z_0 rightarrow z$



I have a function
$$tag{1}rho(z)=intdelta(z-bar{z}(z_0))rho_0 (z_0)dz_0$$
this will give me
$$tag{2}rho(z)=rho_0 (bar{z}^{-1}(z))frac{partial z_0}{partial z}$$
How to obtain equation (2) from equation (1).










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  • $begingroup$
    This should be what you are looking for; math.stackexchange.com/q/56939/8157
    $endgroup$
    – Giuseppe Negro
    Dec 17 '18 at 10:40












  • $begingroup$
    Also, please use the double dollar and the "tag" command for display formulas, instead of ------ Click on "edit" to see how I have done.
    $endgroup$
    – Giuseppe Negro
    Dec 17 '18 at 10:42


















0












$begingroup$


Consider two arbitrary sets of coordinates $z_0$ and $z$ in some space, mapped via some
$bar{z} :$=$z_0 rightarrow z$



I have a function
$$tag{1}rho(z)=intdelta(z-bar{z}(z_0))rho_0 (z_0)dz_0$$
this will give me
$$tag{2}rho(z)=rho_0 (bar{z}^{-1}(z))frac{partial z_0}{partial z}$$
How to obtain equation (2) from equation (1).










share|cite|improve this question











$endgroup$












  • $begingroup$
    This should be what you are looking for; math.stackexchange.com/q/56939/8157
    $endgroup$
    – Giuseppe Negro
    Dec 17 '18 at 10:40












  • $begingroup$
    Also, please use the double dollar and the "tag" command for display formulas, instead of ------ Click on "edit" to see how I have done.
    $endgroup$
    – Giuseppe Negro
    Dec 17 '18 at 10:42
















0












0








0





$begingroup$


Consider two arbitrary sets of coordinates $z_0$ and $z$ in some space, mapped via some
$bar{z} :$=$z_0 rightarrow z$



I have a function
$$tag{1}rho(z)=intdelta(z-bar{z}(z_0))rho_0 (z_0)dz_0$$
this will give me
$$tag{2}rho(z)=rho_0 (bar{z}^{-1}(z))frac{partial z_0}{partial z}$$
How to obtain equation (2) from equation (1).










share|cite|improve this question











$endgroup$




Consider two arbitrary sets of coordinates $z_0$ and $z$ in some space, mapped via some
$bar{z} :$=$z_0 rightarrow z$



I have a function
$$tag{1}rho(z)=intdelta(z-bar{z}(z_0))rho_0 (z_0)dz_0$$
this will give me
$$tag{2}rho(z)=rho_0 (bar{z}^{-1}(z))frac{partial z_0}{partial z}$$
How to obtain equation (2) from equation (1).







distribution-theory dirac-delta






share|cite|improve this question















share|cite|improve this question













share|cite|improve this question




share|cite|improve this question








edited Dec 17 '18 at 10:41









Giuseppe Negro

17.4k332126




17.4k332126










asked Dec 17 '18 at 10:28









Hari KrishnanHari Krishnan

243




243












  • $begingroup$
    This should be what you are looking for; math.stackexchange.com/q/56939/8157
    $endgroup$
    – Giuseppe Negro
    Dec 17 '18 at 10:40












  • $begingroup$
    Also, please use the double dollar and the "tag" command for display formulas, instead of ------ Click on "edit" to see how I have done.
    $endgroup$
    – Giuseppe Negro
    Dec 17 '18 at 10:42




















  • $begingroup$
    This should be what you are looking for; math.stackexchange.com/q/56939/8157
    $endgroup$
    – Giuseppe Negro
    Dec 17 '18 at 10:40












  • $begingroup$
    Also, please use the double dollar and the "tag" command for display formulas, instead of ------ Click on "edit" to see how I have done.
    $endgroup$
    – Giuseppe Negro
    Dec 17 '18 at 10:42


















$begingroup$
This should be what you are looking for; math.stackexchange.com/q/56939/8157
$endgroup$
– Giuseppe Negro
Dec 17 '18 at 10:40






$begingroup$
This should be what you are looking for; math.stackexchange.com/q/56939/8157
$endgroup$
– Giuseppe Negro
Dec 17 '18 at 10:40














$begingroup$
Also, please use the double dollar and the "tag" command for display formulas, instead of ------ Click on "edit" to see how I have done.
$endgroup$
– Giuseppe Negro
Dec 17 '18 at 10:42






$begingroup$
Also, please use the double dollar and the "tag" command for display formulas, instead of ------ Click on "edit" to see how I have done.
$endgroup$
– Giuseppe Negro
Dec 17 '18 at 10:42












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