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Symmetry is a key ingredient in many mathematical, physical, and biological theories. Using representation theory and invariant theory to analyze the symmetries that arise from group actions, and with strong emphasis on the geometry and basic theory of Lie groups and Lie algebras, Symmetry, Representations, and Invariants is a significant reworking of an earlier highly-acclaimed work by the authors. The result is a comprehensive introduction to Lie theory, representation theory, invariant theory, and algebraic groups, in a new presentation that is more accessible to students and includes a broader range of applications. The philosophy of the earlier book is retained, i.e., presenting the principal theorems of representation theory for the classical matrix groups as motivation for the general theory of reductive groups. The wealth of examples and discussion prepares the reader for the complete arguments now given in the general case. Key Features of Symmetry, Representations, and Invariants: (1)Early chapters suitable for honors undergraduate or beginning graduate courses, requiring only linear algebra, basic abstract algebra, and advanced calculus; (2) Applications to geometry (curvature tensors), topology (Jones polynomial via symmetry), and combinatorics (symmetric group and Young tableaux); (3) Self-contained chapters, appendices, comprehensive bibliography; (4) More than 350 exercises (most with detailed hints for solutions) further explore main concepts; (5) Serves as an excellent main text for a one-year course in Lie group theory; (6) Benefits physicists as well as mathematicians as a reference work.

This digital document is a journal article from Trends in Cognitive Sciences, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.Description: Studies of dyslexia provide vital insights into the cognitive architecture underpinning both dis

This digital document is a journal article from Studies in History and Philosophy of Biol & Biomed Sci, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.Description: The ideals and realities of field research have shaped the development of behavioural primatology over the latter half of the twentieth century. This paper draws on interviews with primatologists as well as a survey of the scientific literature to examine the idealized notion of the field site as a natural place and the physical environment of the field as a research space. It shows that what became standard field practice emerged in the course of wide ranging debate about the techniques, personal qualities and site conditions best suited to the scientific study of the natural behaviour of apes and monkeys. Although the laboratory was a constant presence in this debate, the export of techniques from the laboratory to the field was limited, due to concerns that experimental manipulation would destroy the naturalness of the behaviour. The paper goes on to demonstrate the central significance given by primatologists to the unique social, historical and ecological circumstances of particular field sites, and to sketch some of the complexities that fieldworkers contend with in trying to realize their ideals. Primatologists seek field sites that answer their questions; but once their studies become long term, they also need to find questions that answer to ever changing conditions at those sites.

What's the storage capacity of the human brain in gigabytes What's the farthest point on land from the sea Why is frozen milk yellow And why do flamingos stand on one leg "Why Can't Elephants Jump" is the latest (and the fourth) compilation of readers' answers to the questions in the "Last Word" column of "New Scientist". The eagerly awaited successor to "Does Anything Eat Wasps" (2005), "Why Don't Penguins' Feet Freeze" (2006) and "Do Polar Bears Get Lonely" (2008), this is another fine collection of wise and witty answers. Yet again, some of the toughest-seeming puzzles are very simply explained - while some of the questions that seem the simplest turn out to be anything but. "New Scientist"'s "Last Word" is regularly voted the magazine's most popular section. This all-new selection again presents popular science at its most enjoyable, entertaining and enlightening. And the answer to the question It is not that elephants are too large or heavy (hippos and rhinos can play hopscotch) - it is their knees which face the wrong way...all explained with wit and clarity in the book.

Oceanographers, astronomers, mathematicians, biologists, geologists, psychologists--even dermatologists!--and experts in other, sometimes quite arcane fields contributed to this collection of lucid answers to puzzling questions. The questions were asked by lay readers of Scientific American; the responses address the reasons that snowflakes grow symmetrically, the color of the ocean, the true strength of a spider's silken dragline, carsickness, tooth decay, whisker specialization, jellyfish sex, and tons of others. Fast, fun, fascinating.With questions on one side and answers on the other, these 48 fact-filled Knowledge Cards are a great source of condensed information all in a deck the size of a pack of playing cards! Perfect for students, teachers, and the purely inquisitive, this deck is sure to spark your curiosity and encourage you to delve deeper into this fascinating subject. Size: 3 1/4 x 4 inches.

Originally published during the early part of the twentieth century, the Cambridge Manuals of Science and Literature were designed to provide concise introductions to a broad range of topics. They were written by experts for the general reader and combined a comprehensive approach to knowledge with an emphasis on accessibility. H. R. Procter's The Making of Leather, first published in 1914, presents a sketch of the methods, the chemistry and the scientific basis of leather-making.

More monstrous mutants an aventures for your & Gamma Worl game!The raioactive wastelans of Earth are home to many bizarre an barbaric creatures The apocalypse hasnt exactly mae the worl a better place Its survival of the fittest Time to buil a new foo chainThis game expansion presents a menagerie of mutant creatures an a reay-to-play aventure The monsters presente herein can also be pulle over an use in the ungeons & ragons Fantasy Roleplaying GameThis prouct inclues:160-page aventure book, incluing new mutant monsters4 sheets of ie-cut mutant monster tokensA fol-out battle map

Admit it. When you hear the word "neuroscience," you expect something abstract and remote, very complex, of little practical value. But this time...it's personal. In a highly anticipated, three-part series airing on the National Geographic Channel in Fall 2011, National Geographic's Brainworks makes YOU the test subject in an array of astonishing challenges and experiments. Your brain will be stimulated, fooled, and ultimately amazed, as scientists and other experts show you how this three-pound blob of gray matter effectively makes you, you. The television program brings together a crack team of scientists and researchers from a wide range of fields, including neurology, psychology, and opthamology. Awareness expert Dan Simons and memory expert Elizabeth Loftus are just two of the notables who lend their considerable brainpower to this unprecedented project. The program also draws on the know-how of those who traffic in brain tricksillusionists such as David Copperfield and Apollo Robbins and artists such as color expert Beau Lottoto bring each mind-bending illusion to life. The captivating companion book further messes with your head through the visual illusions discovered and perfected by masters of fine art as well as through deceptively simple illustrations that are finely crafted by psychologists to highlight the way we takein and process the world around us. In three sections"Seeing," "Thinking," and "Being"you'll see for yourself why these visual illusions and experiments hoodwink the brain. You'll find out how the structure of the eye influences what you see. And you'll think of events that may not have actually happened, in

This digital document is a journal article from Information and Organization, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.Description: Recent work on Information Systems tries to reconcile the apparent homogeneity of Information Technologies (IT) with the heterogeneity of their use by recognising that users can render IT systems flexible and malleable. This paper advances theorisation of this apparent paradox by reflecting on the nature of IT, i.e. its ontology. Observations of an ERP (SAP) implementation in a large USA multi-national cast within Actor-Network Theory and Science and Technology Studies approaches help illustrate how an object like IT can possess diversity and heterogeneity whilst being a homogeneous and operative technology. The paper argues that IT appears homogeneous for it attracts and generates heterogeneous uses. This paradox is labelled 'heteromogeneous'. An IT system is theorised as an absence which establishes a presence by mobilising and attracting other actors and technologies, in this instance accounting, seeking visibility in organisations. IT emerges from multiple and continuous translations involving customisations of SAP. Thus the definition of IT is neither stable nor singular across time and space, which enables IT and SAP to travel across organisations.

This digital document is a journal article from Trends in Ecology & Evolution, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.Description: Now that large-scale genome-sequencing projects are sampling many organismal lineages, it is becoming possible to compare large data sets of not only DNA and protein sequences, but also genome-level features, such as gene arrangements and the positions of mobile genetic elements. Although it is unlikely that comparisons of such features will address a large number of evolutionary branch points across the broad tree of life owing to the infeasibility of such sampling, they have great potential for resolving many crucial, contested relationships for which no other data seem promising. Here, I discuss the advancements, advantages, methods, and problems of the use of genome-level characters for reconstructing evolutionary relationships.