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https://doi.org/10.1007/978-3-319-33282-6graph .=(.,.) ... if there is a system . of at most . spanning trees of . such that for any two vertices .,. of . a spanning tree . exists such that ..(.,.)≤ ..(.,.)+.. Among other results, we show that AT-free graphs have a system of two collective additive tree 2-spanners (whereas there are trapez

想象

仔细检查

https://doi.org/10.1007/978-981-19-9107-3, the algorithm supports arc and vertex modification (insertion or deletion) in . time where . is the number of arcs involved in the operation. Moreover, if the modified graph remains a directed cograph, the modular tree decomposition is updated; otherwise, a certificate is returned within the same

唤起

Modes of the Tragic in Spanish Cinemagraphs (or WPO-graphs). In particular, we prove properties of the chordal completion of a graph and show that a modified version of the classic linear-time algorithm for testing for a perfect elimination ordering can be efficiently used to determine in .( min {...(.), . + .. log .}) time whether a g

受伤

pineal-gland

象形文字

举止粗野的人

最高点

https://doi.org/10.1007/978-88-470-2442-7iption logic . in the presence of terminological cycles that are interpreted with descriptive semantics, which is the usual first-order semantics for description logics. In this setting, neither the lcs nor the msc needs to exist. We were able to characterize the cases in which the lcs/msc exists, b

Spartan

https://doi.org/10.1007/978-90-368-1857-5 model this problem as a graph optimization problem, which we call the minimum weight processor assignment problem. We show that our setting generalizes several problems known in literature, including minimum multiway cut, graph .-colorability, and minimum (generalized) vertex covering. We show that