Do you recognize this infinite series? $sum_{n=0}^infty frac 1{(1+an)^c} frac{b^n}{n!} $











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I came by this infinite series



$$sum_{n=0}^infty frac 1{(1+an)^c} frac{b^n}{n!} $$



Is there some special function that can have this form?



$c$ can be assumed to be a positive integer. While $a,b$ are positive real numbers










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  • Thanks this is interesting. But I am interested in the case where a is not necessarily integer.
    – M.A
    Nov 28 at 0:09










  • Related: en.wikipedia.org/wiki/Hurwitz_zeta_function
    – Henricus V.
    Nov 28 at 0:13






  • 1




    The sum is equal to $$ frac{1}{a^c Gamma(c)} int_{0}^{1} e^{bx} x^{(1/a)-1} log^{c-1}(1/x) , dx. $$ I am not sure if this simplifies further...
    – Sangchul Lee
    Nov 28 at 0:13








  • 1




    If there is any $f(x)$ that satisfies $f^{(n)}(0)=(1+an)^{-c}$, then the sum is equal to $f(b)$
    – Seth
    Nov 28 at 0:17






  • 1




    When $c$ is a positive integer, the expression equals to a generalized hypergeometric function ${}_cF_cleft( alpha_1,ldots,alpha_c ; beta_1,ldots,beta_c; bright)$ where all $alpha_i = frac1a$ and and all $beta_i = frac1a + 1$.
    – achille hui
    Nov 28 at 0:26















up vote
2
down vote

favorite












I came by this infinite series



$$sum_{n=0}^infty frac 1{(1+an)^c} frac{b^n}{n!} $$



Is there some special function that can have this form?



$c$ can be assumed to be a positive integer. While $a,b$ are positive real numbers










share|cite|improve this question
























  • Thanks this is interesting. But I am interested in the case where a is not necessarily integer.
    – M.A
    Nov 28 at 0:09










  • Related: en.wikipedia.org/wiki/Hurwitz_zeta_function
    – Henricus V.
    Nov 28 at 0:13






  • 1




    The sum is equal to $$ frac{1}{a^c Gamma(c)} int_{0}^{1} e^{bx} x^{(1/a)-1} log^{c-1}(1/x) , dx. $$ I am not sure if this simplifies further...
    – Sangchul Lee
    Nov 28 at 0:13








  • 1




    If there is any $f(x)$ that satisfies $f^{(n)}(0)=(1+an)^{-c}$, then the sum is equal to $f(b)$
    – Seth
    Nov 28 at 0:17






  • 1




    When $c$ is a positive integer, the expression equals to a generalized hypergeometric function ${}_cF_cleft( alpha_1,ldots,alpha_c ; beta_1,ldots,beta_c; bright)$ where all $alpha_i = frac1a$ and and all $beta_i = frac1a + 1$.
    – achille hui
    Nov 28 at 0:26













up vote
2
down vote

favorite









up vote
2
down vote

favorite











I came by this infinite series



$$sum_{n=0}^infty frac 1{(1+an)^c} frac{b^n}{n!} $$



Is there some special function that can have this form?



$c$ can be assumed to be a positive integer. While $a,b$ are positive real numbers










share|cite|improve this question















I came by this infinite series



$$sum_{n=0}^infty frac 1{(1+an)^c} frac{b^n}{n!} $$



Is there some special function that can have this form?



$c$ can be assumed to be a positive integer. While $a,b$ are positive real numbers







calculus power-series special-functions






share|cite|improve this question















share|cite|improve this question













share|cite|improve this question




share|cite|improve this question








edited Nov 28 at 0:11

























asked Nov 27 at 23:59









M.A

1529




1529












  • Thanks this is interesting. But I am interested in the case where a is not necessarily integer.
    – M.A
    Nov 28 at 0:09










  • Related: en.wikipedia.org/wiki/Hurwitz_zeta_function
    – Henricus V.
    Nov 28 at 0:13






  • 1




    The sum is equal to $$ frac{1}{a^c Gamma(c)} int_{0}^{1} e^{bx} x^{(1/a)-1} log^{c-1}(1/x) , dx. $$ I am not sure if this simplifies further...
    – Sangchul Lee
    Nov 28 at 0:13








  • 1




    If there is any $f(x)$ that satisfies $f^{(n)}(0)=(1+an)^{-c}$, then the sum is equal to $f(b)$
    – Seth
    Nov 28 at 0:17






  • 1




    When $c$ is a positive integer, the expression equals to a generalized hypergeometric function ${}_cF_cleft( alpha_1,ldots,alpha_c ; beta_1,ldots,beta_c; bright)$ where all $alpha_i = frac1a$ and and all $beta_i = frac1a + 1$.
    – achille hui
    Nov 28 at 0:26


















  • Thanks this is interesting. But I am interested in the case where a is not necessarily integer.
    – M.A
    Nov 28 at 0:09










  • Related: en.wikipedia.org/wiki/Hurwitz_zeta_function
    – Henricus V.
    Nov 28 at 0:13






  • 1




    The sum is equal to $$ frac{1}{a^c Gamma(c)} int_{0}^{1} e^{bx} x^{(1/a)-1} log^{c-1}(1/x) , dx. $$ I am not sure if this simplifies further...
    – Sangchul Lee
    Nov 28 at 0:13








  • 1




    If there is any $f(x)$ that satisfies $f^{(n)}(0)=(1+an)^{-c}$, then the sum is equal to $f(b)$
    – Seth
    Nov 28 at 0:17






  • 1




    When $c$ is a positive integer, the expression equals to a generalized hypergeometric function ${}_cF_cleft( alpha_1,ldots,alpha_c ; beta_1,ldots,beta_c; bright)$ where all $alpha_i = frac1a$ and and all $beta_i = frac1a + 1$.
    – achille hui
    Nov 28 at 0:26
















Thanks this is interesting. But I am interested in the case where a is not necessarily integer.
– M.A
Nov 28 at 0:09




Thanks this is interesting. But I am interested in the case where a is not necessarily integer.
– M.A
Nov 28 at 0:09












Related: en.wikipedia.org/wiki/Hurwitz_zeta_function
– Henricus V.
Nov 28 at 0:13




Related: en.wikipedia.org/wiki/Hurwitz_zeta_function
– Henricus V.
Nov 28 at 0:13




1




1




The sum is equal to $$ frac{1}{a^c Gamma(c)} int_{0}^{1} e^{bx} x^{(1/a)-1} log^{c-1}(1/x) , dx. $$ I am not sure if this simplifies further...
– Sangchul Lee
Nov 28 at 0:13






The sum is equal to $$ frac{1}{a^c Gamma(c)} int_{0}^{1} e^{bx} x^{(1/a)-1} log^{c-1}(1/x) , dx. $$ I am not sure if this simplifies further...
– Sangchul Lee
Nov 28 at 0:13






1




1




If there is any $f(x)$ that satisfies $f^{(n)}(0)=(1+an)^{-c}$, then the sum is equal to $f(b)$
– Seth
Nov 28 at 0:17




If there is any $f(x)$ that satisfies $f^{(n)}(0)=(1+an)^{-c}$, then the sum is equal to $f(b)$
– Seth
Nov 28 at 0:17




1




1




When $c$ is a positive integer, the expression equals to a generalized hypergeometric function ${}_cF_cleft( alpha_1,ldots,alpha_c ; beta_1,ldots,beta_c; bright)$ where all $alpha_i = frac1a$ and and all $beta_i = frac1a + 1$.
– achille hui
Nov 28 at 0:26




When $c$ is a positive integer, the expression equals to a generalized hypergeometric function ${}_cF_cleft( alpha_1,ldots,alpha_c ; beta_1,ldots,beta_c; bright)$ where all $alpha_i = frac1a$ and and all $beta_i = frac1a + 1$.
– achille hui
Nov 28 at 0:26















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