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Paper
IPM / M / 148 |
School of Mathematics
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Title: |
On the bases for trades
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Author(s): |
| 1 . |
G. B. Khosrovshahi
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Ch. Maysoori
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Status: |
Published
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Journal: |
Linear Algebra Appl.
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Vol.: |
226-228
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Year: |
1995
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Pages: |
731-748
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Supported by: |
IPM
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Abstract: |
In recent years, the algebraic and combinatorial properties
of inclusion matrices of t-subsets versus k-subsets of
a v-set X have been the focus of attention by some authors.
We first make a comparative study of the known bases for the Z-modules
generated by trades (the elements of the null space of these matrices),
and then, by utilizing these bases, we note that a large family
of new bases can by produced.
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