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1. |
Record Nr. |
UNINA9910154744603321 |
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Autore |
Walker Kevin |
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Titolo |
An Extension of Casson's Invariant. (AM-126), Volume 126 / / Kevin Walker |
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Pubbl/distr/stampa |
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Princeton, NJ : , : Princeton University Press, , [2016] |
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©1992 |
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ISBN |
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Descrizione fisica |
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1 online resource (140 pages) : illustrations |
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Collana |
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Annals of Mathematics Studies ; ; 308 |
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Classificazione |
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Disciplina |
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Soggetti |
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Three-manifolds (Topology) |
Invariants |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di bibliografia |
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Includes bibliographical references. |
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Nota di contenuto |
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Frontmatter -- Contents -- 0. Introduction -- 1. Topology of Representation Spaces -- 2. Definition of λ -- 3. Various Properties of λ -- 4. The Dehn Surgery Formula -- 5. Combinatorial Definition of λ -- 6. Consequences of the Dehn Surgery Formula -- A. Dedekind Sums -- B. Alexander Polynomials -- Bibliography |
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Sommario/riassunto |
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This book describes an invariant, l, of oriented rational homology 3-spheres which is a generalization of work of Andrew Casson in the integer homology sphere case. Let R(X) denote the space of conjugacy classes of representations of p(X) into SU(2). Let (W,W,F) be a Heegaard splitting of a rational homology sphere M. Then l(M) is declared to be an appropriately defined intersection number of R(W) and R(W) inside R(F). The definition of this intersection number is a delicate task, as the spaces involved have singularities. A formula describing how l transforms under Dehn surgery is proved. The formula involves Alexander polynomials and Dedekind sums, and can be used to give a rather elementary proof of the existence of l. It is also shown that when M is a Z-homology sphere, l(M) determines the Rochlin invariant of M. |
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2. |
Record Nr. |
UNINA9910154653803321 |
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Autore |
Bird Wendell R |
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Titolo |
Press and speech under assault : the early Supreme Court justices and the Sedition Act of 1798, and the campaign against dissent |
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Pubbl/distr/stampa |
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New York, NY : , : Oxford University Press, , 2016 |
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ISBN |
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0-19-046164-0 |
0-19-046198-5 |
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Descrizione fisica |
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1 online resource : illustrations (black and white) |
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Disciplina |
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Soggetti |
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Seditious libel - History - Law and legislation - 18th century - United States |
Freedom of expression - History - 18th century - United States |
Alien and Sedition laws, 1798 |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Bibliographic Level Mode of Issuance: Monograph |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Sommario/riassunto |
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The early Supreme Court justices wrestled with how much press and speech is protected by freedoms of press and speech, before and under the First Amendment, and with whether the Sedition Act of 1798 violated those freedoms. This book discusses the 12 Supreme Court justices before John Marshall, their views of liberties of press and speech, and the Sedition Act prosecutions over which some of them presided. The book begins with the views of the pre-Marshall justices about freedoms of press and speech, before the struggle over the Sedition Act. It finds that their understanding was strikingly more expansive than the narrow definition of Sir William Blackstone, which is usually assumed to have dominated the period. Not one justice of the Supreme Court adopted that narrow definition before 1798, and all expressed strong commitments to those freedoms. |
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