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The David W. Fentress Family Letters, 1856-1969
No full textTranscript of a letter by an unidentified author to David Fentress regarding sharing federal newspapers and the banning of federal newspapers in some areas. The author passes on the news of the war including the destruction of the Federal merchantmen by the Confederate fleet. He passes along world news: Russia preparing to go to War with Europe and how that could negatively affect the Confederacy. There is also speculation on the future of the war
The David W. Fentress Family Letters, 1856-1969
No full textTranscript of a letter by an unidentified author to David Fentress regarding sharing federal newspapers and the banning of federal newspapers in some areas. The author passes on the news of the war including the destruction of the Federal merchantmen by the Confederate fleet. He passes along world news: Russia preparing to go to War with Europe and how that could negatively affect the Confederacy. There is also speculation on the future of the war
Une approche simpliciale de la construction de la théorie des faisceaux de la cohomologie d'intersection
No full textLa cohomologie d'intersection est un moyen de généraliser des propriétés de la cohomologie classique des variétés au cadre plus vaste des pseudovariétés stratifiées, en particulier elle permet d'étendre la dualité de Poincaré à des espaces avec singularités. Il existe une axiomatique très efficace permettant de construire et de caractériser à quasi-isomorphisme près les complexes de faisceaux qui calculent la cohomologie d'intersection. Il s'agit des axiomes de Deligne. D'un autre côté, il est commun en topologie algébrique de travailler avec des structures simpliciales, ces dernières donnant de bonnes approximations des espaces topologiques. Or dans le cadre simplicial, D. Chataur, M. Saralegui et D. Tanré ont construit une cohomologie d'intersection simpliciale. Une question naturelle est de se demander s'il existe une version simpliciale de l'axiomatique de Deligne. C'est l'enjeu de cette thèse que de mettre en place une telle axiomatique de Deligne simpliciale qui caractérise la cohomologie d'intersection dans ce cadre combinatoire. Dans un premier temps on construit et on étudie de catégories de faisceaux simpliciaux, pour deux contextes combinatoires distincts dans lesquels s'insèrent naturellement les travaux de D. Chataur, M. Saralegui et D. Tanré. On localise ces catégories de faisceaux par rapport aux quasi-isomorphismes, obtenant ainsi des catégories de modèles et des catégories dérivées. Ensuite on pose une axiomatique de Deligne qui est valable dans des cadres catégoriques très variés. Puis, on se focalise sur une topologie particulièrement bien adaptée pour étudier les faisceaux de Deligne sur des complexes simpliciaux. Ayant mis en place le cadre axiomatique adéquat, on peut démontrer les deux résultats principaux de ce travail. Le premier résultat concerne la construction d'un foncteur de réalisation géométrique Φ : Sh(|X|) → Sh∆(X) qui permet de démontrer que ”Si F satisfait les axiomes de Deligne alors Φ(F) satisfait les ∆-axiomes de Deligne. Ce résultat nous permet de comparer les deux axiomatiques celle du cadre topologique traditionnel avec celle nouvelle du cadre simplicial. Finalement on démontre que si F est un faisceau simplicial qui vérifie les ∆-axiomes de Deligne, alors son hypercohomologie calcule la cohomologie d'intersection de la réalisation géométrique : H?(K, F ) ' IH ̄p ? (|K|)Intersection (co)homology is a way to enhance classical (co)homology theory, in a way that allows us to use a powerful result called Poincaré duality, which normally applies to manifolds, on a larger class of spaces known as stratified pseudomanifolds. There is a theoretically powerful way to arrive to intersection (co)homology, called textit{Deligne axioms}, which gives a classification up to quasi isomorphism of sheaves whose hyperhomology correspond to intersection homology. Parallel to this, it is common knowledge in algebraic topology that simplicial structures make for good representations of topological spaces. There is a successful way to construct a textit{simplicial} intersection (co)homology, exposed in the works of D. Chataur, D. Tanré and M. Saralegi-Araguren, and there are clues that point to a great advantage in having a simplicial manifestation of the Deligne axioms. This thesis draws on the constructions made by these authors, exposing a simplicial manifestation of the Deligne axioms. We begin by constructing two interrelated categories of textit{simplicial sheaves} for different kinds of simplicial structures, in which the constructions made by D. Chataur, D. Tanré and M. Saralegi-Araguren fit. Then we localize these categories respect to component-wise quasi isomorphisms, obtaining a model categories and derived categories. We follow by stating the Deligne axioms for many possible contexts, to finally focus on a particular topology on simplicial complexes which produces valuable examples of Deligne sheaves. We arrive at two main results working on this topology. The first one is the construction of a natural ”realization” functor Φ : Sh(|X|) → Sh∆(X) with the property that ”If F satisfies the Deligne axioms, then Φ(F ) satisfies the ∆-Deligne axioms” . The second is that if we have a simplicial sheaf F that satisfies the ∆-Deligne axioms, its hyperhomology is intersection homology of the realization, H?(K, F ) ' IH ̄p ? (|K|
Portrait of author David Foster at the National Library of Australia, Canberra, 8 June 2011 /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author David Foster at the National Library of Australia, Canberra, 8 June 2011.; Acquired in digital format; access copy available online.; Mode of access: Online.; Photographed by a staff member of the National Library of Australia
Rational homotopy and intersection-formality of complex algebraic varieties
No full textInternational audienceA homotopical treatment of intersection cohomology recently developed by Chataur-Saralegui-Tanr, associates a perverse algebraic model to every topological pseudomanifold, extending Sullivan's presentation of rational homotopy theory to intersection cohomology. In this context, there is a notion of intersection-formality, measuring the vanishing of higher Massey products in intersection cohomology. In the present paper, we study the perverse algebraic model of complex projective varieties with isolated singularities. We then use mixed Hodge theory to prove some intersection-formality results for large families of complex projective varieties, such as isolated surface singularities and varieties of arbitrary dimension with ordinary isolated singularities
Author David Foster with academic Jeff Doyle at the National Library of Australia, Canberra, 8 June 2011 /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author David Foster at the National Library of Australia, Canberra, 8 June 2011.; Acquired in digital format; access copy available online.; Mode of access: Online.; Photographed by a staff member of the National Library of Australia
Author David Foster and academic Jeff Doyle at the National Library of Australia, Canberra, 8 June 2011 /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author David Foster at the National Library of Australia, Canberra, 8 June 2011.; Acquired in digital format; access copy available online.; Mode of access: Online.; Photographed by a staff member of the National Library of Australia
David Braithwaite at White Waltham Steam Fair
No full textDavid Braithwaite, fairground enthusiast and author photographed at White Waltham Steam Fair, August 1964
David Zimmer Christmas letter
No full textThis Christmas letter written November 30, 1999, by David Zimmer is titled "Season's Greetings from the last of the Red-Hot-Santas!" It features an illustration of Santa Claus with a guitar, and a summary of Zimmer's year.
David Zimmer (1929-2005) was born in Harrisburg, Ohio. He enlisted in the U.S. Army and served for two years during the Korean War at the Brooke Army Medical Center in San Antonio, where he performed in drag for wounded soldiers. After the war, he returned to Ohio. Zimmer performed as Dolly Divine, a name inspired by the song "Hello Dolly." In 1964, he established the Berwick Ball with Orn Huntington, another important early gay activist in Central Ohio. The Ball began as a formal Halloween costume ball that provided a safe space to gather and enjoy drag shows for the gay community each year; over the years, it grew into an annual Halloween tradition and an important fundraiser for the AIDS movement and other charities. During the 1970s, Zimmer was also known for hosting lavish parties at his Harrisburg home. In 1989, he moved to the German Village area of Columbus where he remained active in the community. During the 1990s, Zimmer continued to perform in and out of drag and commissioned costume designer Dick Frank to make elaborate outfits. Zimmer worked for Huntington National Bank for 39 years and was a member of the Harrisburg United Methodist Church, Veterans of Foreign Wars and the German Village Society
David Zimmer Christmas letter
No full textThis Christmas letter was written December 7, 2004, by David Zimmer. It features a small illustration of Santa Claus, a summary of Zimmer's year, and a clipping from the Village Crier recognizing his 75th birthday celebration.
David Zimmer (1929-2005) was born in Harrisburg, Ohio. He enlisted in the U.S. Army and served for two years during the Korean War at the Brooke Army Medical Center in San Antonio, where he performed in drag for wounded soldiers. After the war, he returned to Ohio. Zimmer performed as Dolly Divine, a name inspired by the song "Hello Dolly." In 1964, he established the Berwick Ball with Orn Huntington, another important early gay activist in Central Ohio. The Ball began as a formal Halloween costume ball that provided a safe space to gather and enjoy drag shows for the gay community each year; over the years, it grew into an annual Halloween tradition and an important fundraiser for the AIDS movement and other charities. During the 1970s, Zimmer was also known for hosting lavish parties at his Harrisburg home. In 1989, he moved to the German Village area of Columbus where he remained active in the community. During the 1990s, Zimmer continued to perform in and out of drag and commissioned costume designer Dick Frank to make elaborate outfits. Zimmer worked for Huntington National Bank for 39 years and was a member of the Harrisburg United Methodist Church, Veterans of Foreign Wars and the German Village Society
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