Amalgamation and Symmetry: From Local to Global Consistency in The Finite

Amalgamation patterns are specified by a finite collection of finite template structures together with a collection of partial isomorphisms between pairs of these. The template structures specify the local isomorphism types that occur in the desired amalgams; the partial isomorphisms specify local amalgamation requirements between pairs of templates. A realisation is a globally consistent solution to the locally consistent specification of this amalgamation problem. This is a single structure equipped with an atlas of distinguished substructures associated with the template structures in such a manner that their overlaps realise precisely the identifications induced by the local amalgamation requirements. We present a generic construction of finite realisations of amalgamation patterns. Our construction is based on natural reduced products with suitable groupoids. The resulting realisations are generic in the sense that they can be made to preserve all symmetries inherent in the specification, and can be made to be universal w.r.t. to local homomorphisms up to any specified size. As key applications of the main construction we discuss finite hypergraph coverings of specified levels of acyclicity and a new route to the lifting of local symmetries to global automorphisms in finite structures in the style of Herwig-Lascar extension properties for partial automorphisms.Comment: A mistake in the proposed construction from [arXiv:1211.5656], cited in Theorem 3.21, was discovered by Julian Bitterlich. This version relies on the new approach to this construction as presented in the new version of [arXiv:1806.08664

This is that which . .. they call Wampum Europeans Coming to Terms with Native Shell Beads

The Native American-European encounter created a multitude of opportunities for understanding and misunderstanding. Linguistic and cultural barriers contributed to the complexity of cross-cultural understanding. In the ca.\u3ee of tubular shell beads known today as wampum, Europeans sought a suitable term to describe the unfamiliar cultural goods that served Native people in ways unfamiliar to Europeans. The French, Dutch, and English experimented with diverse terms-both Native and European-eventually settling on porcelaine, sewant, and wampum, respectively. In doing so, they drew on their linguistic and cultural backgrounds while coming to terms with the Native American languages they encountered. A study of these cross-cultural interactions reveals the nuances and the limits of European understanding, and it demonstrates the cultural linguistic legacy of European colonization

French study on Quality and Safety of Organic Food (AFSSA 2003 Evaluation nutritionnelle et sanitaire des aliments issus de l’agriculture biologique)

The presentations summarises the results of a study on organic farming and food quality published 2003 in France. Agence française de sécurité sanitaire des aliments (AFSSA) (2003): Evaluation nutritionnelle et sanitaire des aliments issus de l’agriculture biologique. AFSSA, F-94701 Maisons-Alfort, France These Conclusions of the study are: · Confirmation of most of the findings in other similar studies · Interesting findings with regard to health promoting compounds · More studies are needed (consumption studies) · Several negative prejudgements about safety of organic food have not been confirmed · Regarding food safety issues: in some areas more monitoring might be needed · The system approach of Organic Farming is recognized as a potential model for more sustainable food safety strategie

Differential ttˉt\bar{t} Cross Section Measurements as a Function of Variables other than Kinematics

An overview of cross section measurements as a function of jet multiplicities and jet kinematics in association with $t\bar{t}$ production is presented. Both the ATLAS and the CMS collaborations performed a large number of measurements at different center-of-mass energies of the LHC using various $t\bar{t}$ decay channels. Theoretical predictions of these quantities usually rely on parton shower simulations that strongly depends on tunable parameters and come with large uncertainties. The measurements are compared to various theoretical descriptions based on different combinations of matrix-element calculations and parton-shower models