Meager
发表于 2025-3-23 12:55:02
Bi-arc Digraphs: Recognition Algorithm and Applications include other popular generalizations of interval graphs, such as co-threshold tolerance graphs and adjusted interval digraphs. On the other hand, they are precisely the digraphs that admit the so-called conservative semilattice polymorphisms, also known as min orderings or X-underbar enumerations.
序曲
发表于 2025-3-23 15:37:24
Pebbling in Kneser Graphs an adjacent vertex. The pebbling number . is the smallest . so that from any initial configuration of . pebbles it is possible, after a sequence of pebbling moves, to place a pebble on any given target vertex. We consider the pebbling number of Kneser graphs, and give positive evidence for the conj
humectant
发表于 2025-3-23 19:18:13
Structural and Combinatorial Properties of 2-Swap Word Permutation Graphs the word . induced by the swap . on . is .. With these permutations, we define the ., .(.) for a given Parikh vector. Each vertex in .(.) corresponds to a unique word with the Parikh vector ., with an edge between any pair of words . and . if there exists a swap . such that .. We provide several ke
Ostrich
发表于 2025-3-24 00:06:08
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parsimony
发表于 2025-3-24 03:51:38
Separating Path Systems in Complete Graphsn . which contains . but not .. Furthermore, for certain classes of .-vertex .-regular graphs we find a collection of . paths that strongly separates any pair of edges. Both results are best-possible up to the .(1) term.
吹牛者
发表于 2025-3-24 10:01:38
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Suggestions
发表于 2025-3-24 14:08:08
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削减
发表于 2025-3-24 17:04:58
(called also a default rule or a conditional assertion) is a piece of information of the following form “generally, if . is believed then . is also believed”, where a and, . are assumed here to be propositional logical formulas. A typical example of a conditional assertion is “generally, birds fly”.
上腭
发表于 2025-3-24 21:36:33
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animated
发表于 2025-3-24 23:10:25
Pavol Hell,Akbar Rafiey,Arash Rafieyby a persistent sense of sadness, termed “dysphoria,” and a persistent state of lack of usual enjoyment or pleasure in previously pleasurable activities, termed “anhedonia.” Depressed individuals with dysphoria describe themselves as being helpless and hopeless, discouraged, “blue,” “fed up,” or “do