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Symplectic Actions Of 2 Tori On 4 Manifolds
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Book Synopsis Symplectic Actions of $2$-Tori on $4$-Manifolds by : Alvaro Pelayo
Download or read book Symplectic Actions of $2$-Tori on $4$-Manifolds written by Alvaro Pelayo and published by American Mathematical Soc.. This book was released on 2010-02-22 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper the author classifies symplectic actions of $2$-tori on compact connected symplectic $4$-manifolds, up to equivariant symplectomorphisms. This extends results of Atiyah, Guillemin-Sternberg, Delzant and Benoist. The classification is in terms of a collection of invariants of the topology of the manifold, of the torus action and of the symplectic form. The author constructs explicit models of such symplectic manifolds with torus actions, defined in terms of these invariants.
Book Synopsis Torus Actions on Symplectic Manifolds by : Michèle Audin
Download or read book Torus Actions on Symplectic Manifolds written by Michèle Audin and published by Birkhäuser. This book was released on 2012-12-06 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: The material and references in this extended second edition of "The Topology of Torus Actions on Symplectic Manifolds", published as Volume 93 in this series in 1991, have been updated. Symplectic manifolds and torus actions are investigated, with numerous examples of torus actions, for instance on some moduli spaces. Although the book is still centered on convexity results, it contains much more material, in particular lots of new examples and exercises.
Book Synopsis The Topology of Torus Actions on Symplectic Manifolds by : Michèle Audin
Download or read book The Topology of Torus Actions on Symplectic Manifolds written by Michèle Audin and published by Birkhäuser. This book was released on 2012-12-06 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: The material and references in this extended second edition of "The Topology of Torus Actions on Symplectic Manifolds", published as Volume 93 in this series in 1991, have been updated. Symplectic manifolds and torus actions are investigated, with numerous examples of torus actions, for instance on some moduli spaces. Although the book is still centered on convexity results, it contains much more material, in particular lots of new examples and exercises.
Book Synopsis Quasi-Actions on Trees II: Finite Depth Bass-Serre Trees by : Lee Mosher
Download or read book Quasi-Actions on Trees II: Finite Depth Bass-Serre Trees written by Lee Mosher and published by American Mathematical Soc.. This book was released on 2011 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper addresses questions of quasi-isometric rigidity and classification for fundamental groups of finite graphs of groups, under the assumption that the Bass-Serre tree of the graph of groups has finite depth. The main example of a finite depth graph of groups is one whose vertex and edge groups are coarse Poincare duality groups. The main theorem says that, under certain hypotheses, if $\mathcal{G}$ is a finite graph of coarse Poincare duality groups, then any finitely generated group quasi-isometric to the fundamental group of $\mathcal{G}$ is also the fundamental group of a finite graph of coarse Poincare duality groups, and any quasi-isometry between two such groups must coarsely preserve the vertex and edge spaces of their Bass-Serre trees of spaces. Besides some simple normalization hypotheses, the main hypothesis is the ``crossing graph condition'', which is imposed on each vertex group $\mathcal{G}_v$ which is an $n$-dimensional coarse Poincare duality group for which every incident edge group has positive codimension: the crossing graph of $\mathcal{G}_v$ is a graph $\epsilon_v$ that describes the pattern in which the codimension 1 edge groups incident to $\mathcal{G}_v$ are crossed by other edge groups incident to $\mathcal{G}_v$, and the crossing graph condition requires that $\epsilon_v$ be connected or empty.
Book Synopsis Symplectic Torus Actions by : Alvaro Pelayo
Download or read book Symplectic Torus Actions written by Alvaro Pelayo and published by . This book was released on 2007 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lyapunov Exponents and Invariant Manifolds for Random Dynamical Systems in a Banach Space by : Zeng Lian
Download or read book Lyapunov Exponents and Invariant Manifolds for Random Dynamical Systems in a Banach Space written by Zeng Lian and published by American Mathematical Soc.. This book was released on 2010 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors study the Lyapunov exponents and their associated invariant subspaces for infinite dimensional random dynamical systems in a Banach space, which are generated by, for example, stochastic or random partial differential equations. The authors prove a multiplicative ergodic theorem and then use this theorem to establish the stable and unstable manifold theorem for nonuniformly hyperbolic random invariant sets.
Book Synopsis Erdos Space and Homeomorphism Groups of Manifolds by : Jan Jakobus Dijkstra
Download or read book Erdos Space and Homeomorphism Groups of Manifolds written by Jan Jakobus Dijkstra and published by American Mathematical Soc.. This book was released on 2010 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Let M be either a topological manifold, a Hilbert cube manifold, or a Menger manifold and let D be an arbitrary countable dense subset of M. Consider the topological group H(M,D) which consists of all autohomeomorphisms of M that map D onto itself equipped with the compact-open topology. We present a complete solution to the topological classification problem for H(M,D) as follows. If M is a one-dimensional topological manifold, then we proved in an earlier paper that H(M,D) is homeomorphic to Qω, the countable power of the space of rational numbers. In all other cases we find in this paper that H(M,D) is homeomorphic to the famed Erdős space E E, which consists of the vectors in Hilbert space l2 with rational coordinates. We obtain the second result by developing topological characterizations of Erdős space.
Book Synopsis Towards a Modulo $p$ Langlands Correspondence for GL$_2$ by : Christophe Breuil
Download or read book Towards a Modulo $p$ Langlands Correspondence for GL$_2$ written by Christophe Breuil and published by American Mathematical Soc.. This book was released on 2012-02-22 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors construct new families of smooth admissible $\overline{\mathbb{F}}_p$-representations of $\mathrm{GL}_2(F)$, where $F$ is a finite extension of $\mathbb{Q}_p$. When $F$ is unramified, these representations have the $\mathrm{GL}_2({\mathcal O}_F)$-socle predicted by the recent generalizations of Serre's modularity conjecture. The authors' motivation is a hypothetical mod $p$ Langlands correspondence.
Book Synopsis Locally Toric Manifolds and Singular Bohr-Sommerfeld Leaves by : Mark D. Hamilton
Download or read book Locally Toric Manifolds and Singular Bohr-Sommerfeld Leaves written by Mark D. Hamilton and published by American Mathematical Soc.. This book was released on 2010 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Volume 207, number 971 (first of 5 numbers)."
Book Synopsis Robin Functions for Complex Manifolds and Applications by : Kang-Tae Kim
Download or read book Robin Functions for Complex Manifolds and Applications written by Kang-Tae Kim and published by American Mathematical Soc.. This book was released on 2011 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Volume 209, number 984 (third of 5 numbers)."
Book Synopsis The Internally 4-Connected Binary Matroids with No $M(K_{3,3})$-Minor by : Dillon Mayhew
Download or read book The Internally 4-Connected Binary Matroids with No $M(K_{3,3})$-Minor written by Dillon Mayhew and published by American Mathematical Soc.. This book was released on 2010 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors give a characterization of the internally $4$-connected binary matroids that have no minor isomorphic to $M(K_{3,3})$. Any such matroid is either cographic, or is isomorphic to a particular single-element extension of the bond matroid of a cubic or quartic Mobius ladder, or is isomorphic to one of eighteen sporadic matroids.
Book Synopsis Jumping Numbers of a Simple Complete Ideal in a Two-Dimensional Regular Local Ring by : Tarmo Järvilehto
Download or read book Jumping Numbers of a Simple Complete Ideal in a Two-Dimensional Regular Local Ring written by Tarmo Järvilehto and published by American Mathematical Soc.. This book was released on 2011 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: The multiplier ideals of an ideal in a regular local ring form a family of ideals parameterized by non-negative rational numbers. As the rational number increases the corresponding multiplier ideal remains unchanged until at some point it gets strictly smaller. A rational number where this kind of diminishing occurs is called a jumping number of the ideal. In this manuscript the author gives an explicit formula for the jumping numbers of a simple complete ideal in a two-dimensional regular local ring. In particular, he obtains a formula for the jumping numbers of an analytically irreducible plane curve. He then shows that the jumping numbers determine the equisingularity class of the curve.
Book Synopsis Second Order Analysis on $(\mathscr {P}_2(M),W_2)$ by : Nicola Gigli
Download or read book Second Order Analysis on $(\mathscr {P}_2(M),W_2)$ written by Nicola Gigli and published by American Mathematical Soc.. This book was released on 2012-02-22 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author develops a rigorous second order analysis on the space of probability measures on a Riemannian manifold endowed with the quadratic optimal transport distance $W_2$. The discussion includes: definition of covariant derivative, discussion of the problem of existence of parallel transport, calculus of the Riemannian curvature tensor, differentiability of the exponential map and existence of Jacobi fields. This approach does not require any smoothness assumption on the measures considered.
Book Synopsis Two Kinds of Derived Categories, Koszul Duality, and Comodule-Contramodule Correspondence by : Leonid Positselski
Download or read book Two Kinds of Derived Categories, Koszul Duality, and Comodule-Contramodule Correspondence written by Leonid Positselski and published by American Mathematical Soc.. This book was released on 2011 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: "July 2011, volume 212, number 996 (first of 4 numbers)."
Book Synopsis Invariant Representations of $\mathrm {GSp}(2)$ under Tensor Product with a Quadratic Character by : Ping-Shun Chan
Download or read book Invariant Representations of $\mathrm {GSp}(2)$ under Tensor Product with a Quadratic Character written by Ping-Shun Chan and published by American Mathematical Soc.. This book was released on 2010 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Volume 204, number 957 (first of 5 numbers)."
Book Synopsis On $L$-Packets for Inner Forms of $SL_n$ by : Kaoru Hiraga
Download or read book On $L$-Packets for Inner Forms of $SL_n$ written by Kaoru Hiraga and published by American Mathematical Soc.. This book was released on 2012 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: The theory of $L$-indistinguishability for inner forms of $SL_2$ has been established in the well-known paper of Labesse and Langlands (L-indistinguishability forSL$(2)$. Canad. J. Math. 31 (1979), no. 4, 726-785). In this memoir, the authors study $L$-indistinguishability for inner forms of $SL_n$ for general $n$. Following the idea of Vogan in (The local Langlands conjecture. Representation theory of groups and algebras, 305-379, Contemp. Math. 145 (1993)), they modify the $S$-group and show that such an $S$-group fits well in the theory of endoscopy for inner forms of $SL_n$.
Book Synopsis Affine Insertion and Pieri Rules for the Affine Grassmannian by : Thomas Lam
Download or read book Affine Insertion and Pieri Rules for the Affine Grassmannian written by Thomas Lam and published by American Mathematical Soc.. This book was released on 2010 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors study combinatorial aspects of the Schubert calculus of the affine Grassmannian ${\rm Gr}$ associated with $SL(n,\mathbb{C})$.Their main results are: Pieri rules for the Schubert bases of $H^*({\rm Gr})$ and $H_*({\rm Gr})$, which expresses the product of a special Schubert class and an arbitrary Schubert class in terms of Schubert classes. A new combinatorial definition for $k$-Schur functions, which represent the Schubert basis of $H_*({\rm Gr})$. A combinatorial interpretation of the pairing $H^*({\rm Gr})\times H_*({\rm Gr}) \rightarrow\mathbb Z$ induced by the cap product.
