High Quality Content by WIKIPEDIA articles! In astronomy, geography, geometry and related sciences and contexts, a plane is said to be horizontal at a given point if it is locally perpendicular to the gradient of the gravity field, i.e., with the direction of the gravitational force (per unit mass) at that point. In geometry, a line is horizontal if it can be drawn from left to right.In radio science, horizontal plane is used to plot an antenna's relative field strength in relation to the ground (which directly affects a station's coverage area) on a polar graph. Normally the maximum of 1.000 or 0 dB is at the top, which is labeled 0o, running clockwise back around to the top at 360°. Other field strengths are expressed as a decimal...

ISBN: 978-6-1326-1109-3
Издательство: Книга по требованию
Дата выхода: июль 2011

High Quality Content by WIKIPEDIA articles! In linear algebra, a Householder transformation (also known as Householder reflection or elementary reflector) is a linear transformation that describes a reflection about a plane or hyperplane containing the origin. Householder transformations are widely used in numerical linear algebra, to perform QR decompositions and in the first step of the QR algorithm. The Householder transformation was introduced in 1958 by Alston Scott Householder. Its analogue over general inner product spaces is the Householder operator. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после...

ISBN: 978-6-1311-6767-6
Издательство: Книга по требованию
Дата выхода: июль 2011

Modular curves provide the first known examples of codes which are better than random ones. However, for an explicit construction of a code one needs a nonsingular model of the modular curve that initially is defined via a very singular planar model given by a modular equation. In this work we analyze the structure of its affine singularities in terms of class numbers of binary quadratic forms. In principle this allows to describe the space of regular differentials vanishing at a point needed for the Goppa construction. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.

ISBN: 978-3-6391-4319-5
Издательство: Книга по требованию
Дата выхода: июль 2011

Мэтью Мак-Дональд - знаменитый программист и популярный автор учебных пособий по программированию, на счету которого уже больше десятка бестселлеров. Его статьи постоянно публикуют такие журналы как Inside Visual Basic, ASPToday, and Hardcore Visual Studio .NET. Новая книга Мак-Дональда - это по-настоящему "недостающее руководство" по HTML5.   Доступно и в занимательной форме рассказано, как HTML превратился в HTML5. Рассмотрены...

ISBN: 978-5-9775-0805-6
Издательство: BHV-СПб
Дата выхода: январь 2017

ISBN: 9781849695947
Издательство: Packt Publishing

Язык HTML5 — новый веб-стандарт, который будет применяться при разработке веб-приложений в ближайшие 10 лет.   Эта книга предоставляет читателю возможность проникнуть внутрь новейших программных решений и научиться использовать их в своих проектах. Каждая из пяти частей книги содержит по одной статье и одному проекту, которые дополняют друг друга, что в итоге позволяет создать на 100% соответствующий...

ISBN: 978-5-4252-0501-8
Издательство: Рид Групп
Дата выхода: январь 2012

ISBN: 9781849693707
Издательство: Packt Publishing

ISBN: 9781849693646
Издательство: Packt Publishing

ISBN: 9781849518505
Издательство: Packt Publishing

Думал ли Кристофер Шмитт в 1993 году, когда он только начинал заниматься веб-разработкой, что станет одним из лучших мировых программистов и веб-дизайнеров? Знал ли он тогда, что неоднократно будет получать награды и признание от своих коллег-программистов? Верил ли он, что когда-нибудь напишет книги, которые станут бестселлерами не только в США, но и во всем мире?   Эта книга, представляющая собой...

ISBN: 978-5-459-01265-1
Издательство: Питер
Дата выхода: июнь 2012

Перед вами руководство по HTML5 и CSS3, которое будет полезным для всех, от начинающего до специалиста. Вы сможете освоить весь спектр возможностей, предлагаемых HTML5 и CSS3. Примеры из книги позволяют стать профессионалом в области создания полноценных веб-приложений. Большое внимание уделено созданию приложений для мобильных устройств.

ISBN: 978-5-699-57580-0
Издательство: Эксмо
Дата выхода: август 2012

ISBN: 9781849691048
Издательство: Packt Publishing

ISBN: 9781849691963
Издательство: Packt Publishing

ISBN: 9781783559282
Издательство: Packt Publishing

ISBN: 9781783280551
Издательство: Packt Publishing

ISBN: 978-5-5128-5712-0

High Quality Content by WIKIPEDIA articles! In mathematics, the Hutchinson metric is a function which measures "the discrepancy between two images for use in fractal image processing" and "can also be applied to describe the similarity between DNA sequences expressed as real or complex genomic signals." The metric space which most closely corresponds to our intuitive understanding of space is the 3-dimensional Euclidean space. In fact, the notion of "metric" is a generalization of the Euclidean metric arising from the four long-known properties of the Euclidean distance. The Euclidean metric defines the distance between two points as the length of the straight line connecting them. Данное издание не является...

ISBN: 978-6-1312-7454-1
Издательство: Книга по требованию
Дата выхода: июль 2011

High Quality Content by WIKIPEDIA articles! The Huzita–Hatori axioms or Huzita–Justin axioms are a set of rules related to the mathematical principles of paper folding, describing the operations that can be made when folding a piece of paper. The axioms assume that the operations are completed on a plane (i.e. a perfect piece of paper), and that all folds are linear. The axioms were first discovered by Jacques Justin in 1989. Axioms 1 through 6 were rediscovered by Italian-Japanese mathematician Humiaki Huzita and reported at the First International Conference on Origami in Education and Therapy in 1991. Axiom 7 was rediscovered by Koshiro Hatori in 2001, and Jacques Justin and Robert J. Lang also found axiom 7. Данное...

ISBN: 978-6-1311-6770-6
Издательство: Книга по требованию
Дата выхода: июль 2011

High Quality Content by WIKIPEDIA articles! The hydraulic diameter, DH, is a commonly used term when handling flow in noncircular tubes and channels. Using this term one can calculate many things in the same way as for a round tube. Definition: D_H = frac {4A}{P} where A is the cross sectional area and P is the wetted perimeter of the cross-section. For a round tube, this checks as: D_H = frac{4 frac {pi D^2}{4}}{pi D} = D Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.

ISBN: 978-6-1340-9773-4
Издательство: Книга по требованию
Дата выхода: июль 2011

High Quality Content by WIKIPEDIA articles!In mathematics, a hyperplane section of a subset X of projective space Pn is the intersection of X with some hyperplane H — in other words we look at the subset XH of those elements x of X that satisfy the single linear condition L = 0 defining H as a linear subspace. Here L or H can range over the dual projective space of non-zero linear forms in the homogeneous coordinates, up to scalar multiplication. From a geometrical point of view, the most interesting case is when X is an algebraic subvariety — for more general cases, in mathematical analysis, some analogue of the Radon transform applies. In algebraic geometry, assuming therefore that X is V, a subvariety not lying completely in any...

ISBN: 978-6-1312-0023-6
Издательство: Книга по требованию
Дата выхода: июль 2011

High Quality Content by WIKIPEDIA articles! In mathematics, hyperbolic coordinates are a useful method of locating points in Quadrant I of the Cartesian plane. A Cartesian coordinate system specifies each point uniquely in a plane by a pair of numerical coordinates, which are the signed distances from the point to two fixed perpendicular directed lines, measured in the same unit of length. Each reference line is called a coordinate axis or just axis of the system, and the point where they meet is its origin. The coordinates can also be defined as the positions of the perpendicular projections of the point onto the two axes, expressed as a signed distances from the origin. Данное издание не является...

ISBN: 978-6-1312-2192-7
Издательство: Книга по требованию
Дата выхода: июль 2011

High Quality Content by WIKIPEDIA articles! In differential geometry, a hyperkahler manifold is a Riemannian manifold of dimension 4k and holonomy group contained in Sp(k) (here Sp(k) denotes a compact form of a symplectic group, identified with the group of quaternionic-linear unitary endomorphisms of an n-dimensional quaternionic Hermitian space). Hyperkahler manifolds are special classes of Kahler manifolds. They can be thought of as quaternionic analogues of Kahler manifolds. All hyperkahler manifolds are Ricci-flat and are thus Calabi-Yau manifolds (this can be easily seen by noting that Sp(k) is a subgroup of SU(2k)). Hyperkahler manifolds were defined by E. Calabi in 1978. Данное издание не является...

ISBN: 978-6-1312-0042-7
Издательство: Книга по требованию
Дата выхода: июль 2011

By the work of Thurston, any surgery on a hyperbolic knot in the 3-sphere produces a hyperbolic 3-manifold except in at most finitely many cases. So far, the figure-8 knot seems to be the best candidate for a hyperbolic knot with the most (8) non-trivial exceptional surgeries. In recent years, much progress has been made in the classification of hyperbolic knots admitting more than one exceptional toroidal surgery. In fact, such classification is known for toroidal surgeries with distance at least 4. We give a necessary condition for a hyperbolic knot in the 3-sphere admitting two toroidal surgeries at distance 3, whose slopes are represented by twice punctured essential separating tori. Namely, such knots belong to a family K(a, b, n),...

ISBN: 978-3-8383-5052-3
Издательство: Книга по требованию
Дата выхода: июль 2011

High Quality Content by WIKIPEDIA articles! In group theory, a hyperbolic group, also known as a word hyperbolic group, Gromov hyperbolic group, negatively curved group is a finitely generated group equipped with a word metric satisfying certain properties characteristic of hyperbolic geometry. The notion of a hyperbolic group was introduced and developed by Mikhail Gromov in the early 1980s. He noticed that many results of Max Dehn concerning the fundamental group of a hyperbolic Riemann surface do not rely either on it having dimension two or even on being a manifold and hold in much more general context. In a very influential paper from 1987, Gromov proposed a wide-ranging research program. Ideas and foundational material in the...

ISBN: 978-6-1312-7479-4
Издательство: Книга по требованию
Дата выхода: июль 2011

High Quality Content by WIKIPEDIA articles! In the mathematical field of topology, the Hopf fibration (also known as the Hopf bundle or Hopf map) describes a 3-sphere (a hypersphere in four-dimensional space) in terms of circles and an ordinary sphere. Discovered by Heinz Hopf in 1931, it is an influential early example of a fiber bundle. Technically, Hopf found a many-to-one continuous function (or "map") from the 3-sphere onto the 2-sphere such that each distinct point of the 2-sphere comes from a distinct circle of the 3-sphere (Hopf 1931). Thus the 3-sphere is composed of fibers, where each fiber is a circle — one for each point of the 2-sphere. Данное издание не является оригинальным. Книга...

ISBN: 978-6-1312-4233-5
Издательство: Книга по требованию
Дата выхода: июль 2011