6 citations · 16 across the 9 of their papers we have counts for
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math.LO2007★ 3 cited
Combinatorial and hybrid principles for sigma-directed families of countable sets modulo finite
James Hirschorn
We consider strong combinatorial principles for sigma-directed families of countable sets in the ordering by inclusion modulo finite, e.g. P-ideals of countable sets. We try for pr…
math.RA2007
Partial order embeddings with convex range
James Hirschorn
A careful study is made of embeddings of posets which have a convex range. We observe that such embeddings share nice properties with the homomorphisms of more restrictive categori…