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An example of a database state in the lextensive category of finite sets, for the EA sketch of our school data specification is provided by any database which models the
Key Words: Inequalities, convex function, Jensen’s inequality, Jessen’s inequality, iso- tonic functional, Jessen’s functional, superadditivity, subadditivity, monotonicity,
As with subword order, the M¨obius function for compositions is given by a signed sum over normal embeddings, although here the sign of a normal embedding depends on the
Keywords and Phrases: moduli of vector bundles on curves, modular compactification, general linear
Answering a question of de la Harpe and Bridson in the Kourovka Notebook, we build the explicit embeddings of the additive group of rational numbers Q in a finitely generated group
Definition An embeddable tiled surface is a tiled surface which is actually achieved as the graph of singular leaves of some embedded orientable surface with closed braid
We give a Dehn–Nielsen type theorem for the homology cobordism group of homol- ogy cylinders by considering its action on the acyclic closure, which was defined by Levine in [12]
The goal of the present paper is a description of the singularities of the Selberg zeta function in terms of the group cohomology of Γ with coefficients in certain infinite