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Fabio
  • Member for 9 years, 2 months
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Closed form solution for $XAX^{T}=B$
Thank you for the answers, I think Federico's answer is very neat, at least for the type of problem I specified.
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Green function of the triangular kernel?
Thank you now is much clearer! Why do the functions f have to be odd? Could you please point me to a reference book/paper/notes about inverting kernels?
awarded
 Scholar
accepted
Closed form solution for $XAX^{T}=B$
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Green function of the triangular kernel?
Thank you! Would the differential operator $D$ then be a solution in the sense: $\int dx^{''}K(x,x^{''})D(x^{''},x')=\delta(x-x')$?
asked
Closed form solution for $XAX^{T}=B$
awarded
 Supporter
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Green function of the triangular kernel?
I am interested in the case where $|x-y|<1$, I corrected, Thanks.
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Green function of the triangular kernel?
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Green function of the triangular kernel?
Yes sorry I added the details. Thanks.
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Green function of the triangular kernel?
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asked
Green function of the triangular kernel?
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Linear maps that increase majorization order
Is an order on vectors, see e.g. en.wikipedia.org/wiki/Majorization
asked
Linear maps that increase majorization order
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Majorization for vector valued function: looking for literature
Hi, is the majorization order.
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Majorization for vector valued function: looking for literature
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Orderings derived from function sets (Marshall and Olkin book): looking for literature
awarded
 Tumbleweed
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Set of vectors closed under restricted permutation operations
Hi, thanks but I think that if I write $P_i=(1 2 3 \cdots d)$, $P_i$ is a cyclic permutation which is not always the case! Fabio
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Set of vectors closed under restricted permutation operations
Yes, the case I am more interested in $k=d$. Sorry why is it easy to check in the case the permutation is generated by a $d-$cycle? Thanks!