Let $A_n$ be the $n\times n$ matrix whose (i,j)-element is $1/(i+j-1)$. this is a famous matrix in linear algebra and has some nice properties (like, its inverse is integral).

Does any body remember the name of this matix? I am sure it was named after some body but I don't remeber. And I need the name for some reason.

Let $A_n$ be the $n\times n$ matrix whose $(i,j)$-element is $1/(i+j-1)$. This is a famous matrix in linear algebra and has some nice properties (like, its inverse is integral).

Does anybody remember the name of this matrix? I am sure it was named after somebody but I don't remember. And I need the name for some reason.

Let $A_n$ be the $n\times n$ matrix whose (i,j)-element is $1/(i+j)$. this is a famous matrix in linear algebra and has some nice properties (like, its inverse is integral).

Does any body remember the name of this matix? I am sure it was named after some body but I don't remeber. And I need the name for some reason.

Let $A_n$ be the $n\times n$ matrix whose (i,j)-element is $1/(i+j-1)$. this is a famous matrix in linear algebra and has some nice properties (like, its inverse is integral).

Does any body remember the name of this matix? I am sure it was named after some body but I don't remeber. And I need the name for some reason.