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User:Thomas Wieder

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CV: Born 1961 in Germany.

Interests: Counting of hierarchical orderings (e.g. A075729), rankings (e.g. A083355), coalitions (e.g. A131407), multiselections (A188667).


Related publications:

Thomas Wieder: Generation of All Possible Multiselections from a Multiset, Progress in Applied Mathematics 2(1) (2011), 61-66.

Thomas Wieder: The number of certain rankings and hierarchies formed from labeled or unlabeled elements and sets, APPLIED MATHEMATICAL SCIENCES 3(55) (2009), 2707-2724.

Thomas Wieder: The Number Of Certain k-Combinations Of An n-Set, Applied Mathematical E-Notes 8 (2008), 42-52.

N. J. A. Sloane and T. Wieder: The Number of Hierarchical Orderings, Order 21(1) (2004), 83-89.


Websites:

http://homepages.tu-darmstadt.de/~wieder/Welcome.html

https://sites.google.com/site/twieder21stcenturyad


Links to some of my documents and programs:

Maple program multichoose for multiselections from multisets:

multichoose.pdf

multichoose.mpl

multichoose.mw


Maple program multiselection for multiselections from multisets:

multiselection.pdf

mujltiselection.mpl

multiselection.mw


Maple program enum for generation of integer matrices with given row and column sums:

enum.pdf

enum.mpl

enum.mw


Fortran program OPTM0.f95 for for selection of an optimal submultiset from a multiset:

OPTM0.pdf

OPTM0.f95

simulated_anneal.f95

LIMITS.f95

AUXILIARY.f95

OPTM0.in

OPTM0.out


Yet another Maple program for multiselections from multisets (one after the other):

Multiselection (2nd approach)

next_ordered_fixed_length_partition.mpl

Multiselection_From_Multiset.mw

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