Results 21 to 30 of about 319 (154)
Rivista Italiana di Paleontologia e Stratigrafia, 2007 The Cretaceous coral genus Preverastraea is being revised, mainly on the basis of sample material. This cerioid, occasionally astreoid or phaceloid, genus is characterised by round or polygonal calices, compact septa in a regular hexameral symmetry and ...
HANNES LÖSER
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Dendroidal Segal spaces and ∞-operads [PDF]
Journal of Topology, 2013 We introduce the dendroidal analogues of the notions of complete Segal space and of Segal category, and construct two appropriate model categories for which each of these notions corresponds to the property of being fibrant. We prove that these two model categories are Quillen equivalent to each other, and to the monoidal model category for 8-operads ...
Cisinski, Denis Charles, Moerdijk, Ieke
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Rigidification of dendroidal infinity-operads [PDF]
Homology, Homotopy and Applications, 2021 We give an explicit description of the rigidification of an $\infty$-operad as a simplicial operad. This description is based on the notion of dendroidal necklace, extending work of Dugger and Spivak from the categorical context to the operadic context, although with a different framework, which relates constructions involving necklaces to a standard ...
Bonventre, Peter, Pereira, Luís A.
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Simplicial and Dendroidal Homotopy Theory
, 2022 This open access book offers a self-contained introduction to the homotopy theory of simplicial and dendroidal sets and spaces. These are essential for the study of categories, operads, and algebraic structure up to coherent homotopy. The dendroidal theory combines the combinatorics of trees with the theory of Quillen model categories.
Heuts, Gijs, Moerdijk, Ieke
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Contractibility of the hyperspace of meager subcontinua, two examples
Applied General TopologyGiven a metric continuum X, the hyperspace of meager subcontinua of X, denoted by M(X), is the collection of all subcontinua of X with empty interior. Answering questions by Norberto Ordo˜nez, in this paper we construct two dendroids showing that there ...
Alejandro Illanes +1 more
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Dendroidal Spaces and ∞-Operads
, 2022 AbstractRecall that a dendroidal set X is an ∞-operad if it satisfies the inner Kan condition; i.e., it has the extension property with respect to all inner horn inclusions of trees. In particular, this condition guarantees that if we interpret the sets X(T) as ‘sets of operations’ parametrized by the tree T, then there is a notion of composition of ...
Gijs Heuts, Ieke Moerdijk
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Acta Agrobotanica, 2014 Origanum dictamnus is a seasonally dimorphic plant having different appearance in winter and summer. Shoots of winter plants are leaf-naked except for their apical region which bears a cluster of small leaves covered with a thick indumentum of non ...
Artemios M. Bosabalidis, Thomas Sawidis
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The effect of rapid chair-side sterilization of contaminated endodontic files [PDF]
Romanian Journal of StomatologyEndodontic treatment is carried out in order to preserve a tooth whose pulp has been damaged where the injury extends to the peri-radicular tissue. The endodontic treatment is cleaning, disinfection of the root canal space and shaping it, followed by ...
Ban M. Jassim +3 more
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Homology of dendroidal sets [PDF]
Homology, Homotopy and Applications, 2017 We define for every dendroidal set X a chain complex and show that this assignment determines a left Quillen functor. Then we define the homology groups $H_n(X)$ as the homology groups of this chain complex. This generalizes the homology of simplicial sets.
Basic, M., Nikolaus, T.
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ZooKeys, 2017 Two new species of two genera of the family Ancorabolidae, Ceratonotus elongatus sp. n. and Dendropsyllus californiensis sp. n., found at 1642 m and 1759 m depth, respectively, in the Southern Trough of Guaymas Basin, are described. Ceratonotus elongatus
Samuel Gómez, Karen Díaz
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