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Are the elements pairs consisting of a bipartition and a non-negative integer, with multiplication given by multiplying the bipartitions and adding the number of floating components to something?
This is my understanding, with the proviso that in order to get finite semigroups you need to truncate at some point (which I think means multiplying to some 0 once the number of components gets too large).
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james-d-mitchell commentedon Jun 16, 2025
Are the elements pairs consisting of a bipartition and a non-negative integer, with multiplication given by multiplying the bipartitions and adding the number of floating components to something?
flsmith commentedon Jun 18, 2025
This is my understanding, with the proviso that in order to get finite semigroups you need to truncate at some point (which I think means multiplying to some 0 once the number of components gets too large).