Drupal 7 multi-sites configuration [[electronic resource] ] : run multiple websites from a single instance of Drupal 7 / / Matt Butcher

• Record Nr.: UNINA9910461514403321
• Autore: Butcher Matt
• Pubbl/distr/stampa: Birmingham ; ; Mumbai, : Packt Pub., 2012
• ISBN: 1-280-11889-X; 9786613523181; 1-84951-801-7
• Descrizione fisica: 1 online resource (104 p.)
• Collana: Open source : community experience distilled
• Disciplina: 006.7; 006.7/6
• Soggetti: Electronic books.
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Includes index.
• Nota di contenuto: Cover; Drupal 7 Multi-sites Configuration; Credits; About the Author; About the Reviewers; www.PacktPub.com; Support files, eBooks, discount offersand more; Why Subscribe?; Free Access for Packt account holders; Table of Contents; Preface; What this book covers; What you need for this book; Who this book is for; Conventions; Reader feedback; Customer support; Errata; Piracy; Questions; Chapter 1: Multi-site Drupal; Drupal is a multi-site Content Management System; From one site to many; Why multi-site?; Running different software on the same site; Making the most of shared hosting; Easing server administrationStaging or testing before deploying to a live site; Sharing a single code base; Running secure and standard (unsecured) tools on the same server; Efficient development; Drupal and multi-site; A quick guide to choosing the right multi-site configuration; Setting up a server; Installing a Drupal Virtual Machine with Vagrant; Installing our tailored Vagrant project; Basic configuration for this book; Connecting to the new Virtual Machine; Configuring a server (without VirtualBox and Vagrant); Domain names and IP addresses; Using a hosts file; Web servers; Apache; Configuring Apache for a Drupal Multi-siteA note on using virtual hosting for each domain; Configuring MySQL; Summary; Chapter 2: Installing Drupal for Multi-site; Manual setup; Downloading Drupal; ; Installing the first host; Telling Drupal about our sites; Creating a site folder; Domain name directories; Domains with subdirectories; The sites.php special configuration file; Settings; The files/ folder; The web installer; Creating the other sites; Getting installation help; Summary; Chapter 3: Settings, Modules, and Themes; Configuring sites; Creating a shared configuration file; A word of warning about sharing settingsConfiguring modules; Sharing modules; Unshared modules; A note on using different versions of the same module; Modules and sharing (in summary); Themes; Subthemes and sharing; Summary; Chapter 4: Updating Multi-site Drupal; Updating Drupal; Making backups; Filesystem backups; Database backups; Putting Drupal in maintenance mode; Downloading and installing Drupal; Fetching a new version; Overwriting the existing files; Checking the default.settings.php file; Running update.php; Taking the sites out of maintenance mode; Updating themes and modules; A minor complicationSummary; Chapter 5: Advanced Multi-sites; Favicons and robots; Shared authentication; OpenID and other authentication services; LDAP and Directory services; Using the Services module; Using Bakery for SSO; Sharing a user database; Shared content; Sharing content with Services and Deploy; Domain Access as a multi-site alternative; The Virtual Site module; Shared structure; Searching across sites; Summary; Index
• Sommario/riassunto: Follow the creation of a multi-site instance with Drupal. The practical examples and accompanying screenshots will help you to get multiple Drupal sites set up in no time. This book is for Drupal site builders. It is assumed that readers are familiar with Drupal already, with a basic grasp of its concepts and components. System administration concepts, such as configuring Apache, MySQL, and Vagrant are covered but no previous knowledge of these tools is required.

Polynomial Automorphisms and the Jacobian Conjecture : New Results from the Beginning of the 21st Century / / by Arno van den Essen, Shigeru Kuroda, Anthony J. Crachiola

• Record Nr.: UNINA9910484880603321
• Autore: Essen A. R. P. van den (Arnoldus Richardus Petrus van den), <1951->
• Pubbl/distr/stampa: Cham : , : Springer International Publishing : , : Imprint : Birkhäuser, , 2021
• ISBN: 3-030-60535-3
• Edizione: [1st ed. 2021.]
• Descrizione fisica: 1 online resource (197 pages) : illustrations
• Collana: Frontiers in Mathematics, , 1660-8054
• Disciplina: 516.35
• Soggetti: Geometry, Algebraic; Algebra; Mathematics; Algebraic Geometry
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Intro -- Preface -- Acknowledgments -- Contents -- 1 The Shestakov-Umirbaev Theory and Nagata's Conjecture -- 1.1 The Shestakov-Umirbaev Theory -- 1.1.1 Nagata's Conjecture -- 1.1.2 Weighted Grading -- 1.1.3 Initial Algebras and Elementary Reductions -- 1.1.4 Wildness Criterion -- 1.2 Structure of the Proof -- 1.2.1 Key Propositions -- 1.2.2 Induction -- 1.2.3 Proof of Claim A -- 1.2.4 Proof of Claim B -- Summary of Sect.1.2 -- 1.3 Degree Inequalities -- 1.3.1 Differentials -- 1.3.2 Shestakov-Umirbaev Inequality -- 1.3.3 Useful Consequences -- 1.3.4 Exercises -- 1.3.5 Degrees of Cofactor Expansions -- 1.4 Weak Shestakov-Umirbaev Condition -- 1.4.1 Description of g1 and g2 -- 1.4.2 Degree Estimations -- 1.5 Completion of the Proof -- 1.6 How to Find Reductions -- 1.6.1 Elementary Reduction -- 1.6.2 Shestakov-Umirbaev Reduction -- 2 Counterexamples to Hilbert's Fourteenth Problem -- 2.1 Introduction -- 2.2 Main Theorem -- 2.2.1 Construction -- 2.2.2 A Sufficient Condition on t2,...,tn -- 2.2.3 Example and Remarks -- 2.3 Criterion for Non-finite Generation -- 2.4 Proof of Theorem 2.2.4, Part I -- 2.5 Proof of Theorem 2.2.4, Part II -- 2.6 Application (1): Derivations -- 2.7 Application (2): Invariant Fields -- 3 Prime Characteristic Methods ; and the Cancellation Problem -- 3.1 The Makar-Limanov and Derksen Invariants -- 3.2 Exponential Maps -- 3.3 Cancellation in Dimensions One and Two -- 3.4 Cancellation in Dimensions Three and Higher -- 4 The Jacobian Conjecture: New Equivalences -- 4.1 Preliminaries: Exterior Forms -- 4.2 The Canonical Poisson Algebra and the Poisson Conjecture -- 4.3 The Weyl Algebra and the Dixmier Conjecture -- Applications to the Case that R is a Domain -- 4.4 The Equivalence of the Dixmier, Jacobian, and Poisson Conjectures -- 4.5 A p-Adic Formulation of the Jacobian Conjecture and the Unimodular Conjecture -- Transitivity.; Keller Maps and the Unimodular Conjecture -- The Unimodular Conjecture over Zp -- 4.6 A Mysterious Faulty Proof of the Jacobian Conjecture -- 5 Mathieu-Zhao Spaces -- 5.1 Generalizing the Jacobian Conjecture -- 5.2 Mathieu-Zhao Spaces: Definition and Examples -- 5.3 Zhao's Idempotency Theorem -- 5.4 Orthogonal Polynomials and MZ-Spaces -- Orthogonal Polynomials -- 5.5 The Duistermaat-van der Kallen Theorem -- Polytopes -- The Density Theorem -- Applications of the Density Theorem -- Generalizing the Duistermaat-van der Kallen Theorems -- 5.6 The Generalized Vanishing Conjecture -- 5.7 The Image Conjecture -- 5.8 MZ-Spaces of Matrices of Codimension One -- Some Corrections to E1 -- Bibliography -- Index.
• Sommario/riassunto: This book is an extension to Arno van den Essen's Polynomial Automorphisms and the Jacobian Conjecture published in 2000. Many new exciting results have been obtained in the past two decades, including the solution of Nagata's Conjecture, the complete solution of Hilbert's fourteenth problem, the equivalence of the Jacobian Conjecture and the Dixmier Conjecture, the symmetric reduction of the Jacobian Conjecture, the theory of Mathieu-Zhao spaces and counterexamples to the Cancellation problem in positive characteristic. These and many more results are discussed in detail in this work. The book is aimed at graduate students and researchers in the field of Affine Algebraic Geometry. Exercises are included at the end of each section.