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pro vyhledávání: '"Erné, Marcel"'
Autor:
Erné, Marcel
Publikováno v:
Logical Methods in Computer Science, Volume 15, Issue 1 (March 5, 2019) lmcs:1539
Web spaces, wide web spaces and worldwide web spaces (alias C-spaces) provide useful generalizations of continuous domains. We present new characterizations of such spaces and their patch spaces, obtained by joining the original topology with a secon
Externí odkaz:
http://arxiv.org/abs/1802.08170
Autor:
Campo, Frank A, Erné, Marcel
We establish formulas for the number of all downsets (or equivalently, of all antichains) of a finite poset P. Then, using these numbers, we determine recursively and explicitly the number of all posets having a fixed set of minimal points and induci
Externí odkaz:
http://arxiv.org/abs/1802.01419
Autor:
Erné, Marcel, Picado, Jorge
A classical tensor product $A \,\otimes\, B$ of complete lattices $A$ and $B$, consisting of all down-sets in $A \times B$ that are join-closed in either coordinate, is isomorphic to the complete lattice $Gal(A,B)$ of Galois maps from $A$ to $B$, tur
Externí odkaz:
http://arxiv.org/abs/1612.05694
Autor:
Erné, Marcel
We present old and new characterizations of core spaces, alias worldwide web spaces, originally defined by the existence of supercompact neighborhood bases. The patch spaces of core spaces, obtained by joining the original topology with a second topo
Externí odkaz:
http://arxiv.org/abs/1607.04721
Autor:
Erné, Marcel
Morphisms between (formal) contexts are certain pairs of maps, one between objects and one between attributes of the contexts in question. We study several classes of such morphisms and the connections between them. Among other things, we show that t
Externí odkaz:
http://arxiv.org/abs/1407.0512
Autor:
Brandhorst, Simon, Erné, Marcel
Publikováno v:
Topology Proceedings, Volume 45 (2015)
We consider classes T of topological spaces (referred to as T-spaces) that are stable under continuous images and frequently under arbitrary products. A local T-space has for each point a neighborhood base consisting of subsets that are T-spaces in t
Externí odkaz:
http://arxiv.org/abs/1310.0396
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