Television simulation for aircraft and space flight Patent

Television simulation for aircraft and space fligh

Veduta del Tempio di Antonino e Faustino in Campo Vaccino

Giovanni Battista Piranesi is one of history’s best etchers and architects. His two main series of copper etchings, I Carceri (The Prisons) and Vedute (The Views) spread out across the European continent and beyond both during his life and after his death. The “Wonders of Nature and Artifice” exhibition at Schmucker Art Gallery is lucky to have one of his original prints from the Vedute series generously on loan, from the Collection of Professor Charles F. Emmons, Professor of Sociology here at Gettysburg College. The print sizes in at 35 inches by 25 and a half inches, depicting a temple-church combination that stands in the Roman Forum with 18th century Rome stretching out behind it, and various denizens of the 19th century surrounding the structure. The title of the print, Veduta del Tempio di Antonino e Faustina in Campo Vaccino is a very literal one, translating to “View of the Temple of Antoninus and Faustina in Campo Vaccino”, Campo Vaccino being a cow pasture that became the Roman Forum before the area was excavated. [excerpt

Whitney tower concordance of classical links

This paper computes Whitney tower filtrations of classical links. Whitney towers consist of iterated stages of Whitney disks and allow a tree-valued intersection theory, showing that the associated graded quotients of the filtration are finitely generated abelian groups. Twisted Whitney towers are studied and a new quadratic refinement of the intersection theory is introduced, measuring Whitney disk framing obstructions. It is shown that the filtrations are completely classified by Milnor invariants together with new higher-order Sato-Levine and higher-order Arf invariants, which are obstructions to framing a twisted Whitney tower in the 4-ball bounded by a link in the 3-sphere. Applications include computation of the grope filtration, and new geometric characterizations of Milnor's link invariants.Comment: Only change is the addition of this comment: This paper subsumes the entire preprint "Geometric Filtrations of Classical Link Concordance" (arXiv:1101.3477v2 [math.GT]) and the first six sections of the preprint "Universal Quadratic Forms and Untwisting Whitney Towers" (arXiv:1101.3480v2 [math.GT]

A super-analogue of Kontsevich's theorem on graph homology

In this paper we will prove a super-analogue of a well-known result by Kontsevich which states that the homology of a certain complex which is generated by isomorphism classes of oriented graphs can be calculated as the Lie algebra homology of an infinite-dimensional Lie algebra of symplectic vector fields.Comment: 15 page