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Definitions:
Definitions:

... Where n is a unit vector in the direction perpendicular to the plane determined by the two vectors a and b and follows the right hand rule. This multiplication can also be performed utilizing the following technique, if ...
vector
vector

Atom structures of cylindric algebras and relation algebras
Atom structures of cylindric algebras and relation algebras

... algebra, the notion of a cylindric algebra (or relation algebra) is defined axiomatically. The task is then to show (if possible) that any model of these axioms is isomorphic to a concrete algebra whose elements are n-ary relations on some set and whose operations are defined set-theoretically in t ...
Interval-valued Fuzzy Vector Space
Interval-valued Fuzzy Vector Space

... fuzzy algebra is defined and ingestigated a lot of interesting properties. Each result is illustrated by a suitable exmaple. Keywords: Interval-valued fuzzy sets, interval-valued fuzzy vector space, subspace. AMS Mathematics Subject Classification (2010): 08A72, 15B15 1. Introduction There is a grow ...
MATHEMATICAL CONCEPTS OF EVOLUTION ALGEBRAS IN NON
MATHEMATICAL CONCEPTS OF EVOLUTION ALGEBRAS IN NON

... = x[n] x[n] . Equivalently, we can set x[n] equal to Λn (x) for any n ≥ 0. Recall that composition of maps is an associative binary operation. Thus: Lemma 2.3. Let E be an algebra, x ∈ E, α ∈ K, and n, m ≥ 0. Then: (i) (x[n] )[m] = x[n+m] , ...
Homework assignments
Homework assignments

Homomorphisms on normed algebras
Homomorphisms on normed algebras

... ||5PJ|->oo. By the arguments of [1], the minimal ideals of R are the same as the minimal ideals of @(£). For each idempotent generator J of a minimal right ideal of R, JRJ is a normed division algebra and hence has a unique norm topology by the Gelfand-Mazur theorem. Since WJTJW^O we have l(J2V||->0 ...
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full text (.pdf)

Chapter 4 Lie Groups and Lie Algebras
Chapter 4 Lie Groups and Lie Algebras

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ALGEBRAIC APPROACH TO TROPICAL - Math-Wiki

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Unit Overview - Connecticut Core Standards

... The direction of a line segment is its direction relative to some fixed direction. A vector is a line segment that has both magnitude and direction so it is sometimes called a directed line segment. A scalar is any real number. The determinant is a value associated with a square matrix. It can be co ...
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[math.QA] 23 Feb 2004 Quantum groupoids and

... in the standard way, e.g., R = R1 ⊗ R2 ∈ H ⊗ H. We use analogous notation for an H-coaction δ on a (left) comodule A, namely, δ(a) = a(1) ⊗ a[2] , where the square brackets label the A-component and the parentheses mark the component belonging to H. The Hopf algebra with the opposite multiplication ...
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Here

... • Know how to compute the volume of a parallelopiped using determinants. One of the key facts that goes in to the derivation of this formula is the fact that |u × v| = |u||v|| sin θ|, where θ is the angle between the vectors u and v. • Know the definition of linearly independent vectors. Know the de ...
LIE GROUP ACTIONS ON SIMPLE ALGEBRAS 1. Introduction Let G
LIE GROUP ACTIONS ON SIMPLE ALGEBRAS 1. Introduction Let G

... In this paper, we restrict attention to simple algebras over C, that is, complex matrix algebras. When the unique simple (left) module V of A is an irreducible projective representation, we show that all nonzero invariant subalgebras are themselves simple and appear in dual pairs. In particular, we ...
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Paper on Quaternions

... long enough distinctly to communicate the discovery. I pulled out on the spot a pocket-book, which still exists, and made an entry there and then. Nor could I resist the impulse — unphilosophical as it may have been — to cut with a knife on a stone of Brougham Bridge, as we passed it, the fundamenta ...
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Dense Linear Algebra

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The symplectic Verlinde algebras and string K e

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History of Numerical Linear Algebra, a Personal View

... (I − F T F )v = h − F T g. The matrix I − F T F can be reordered in some cases, to have the same structure as above: can repeat this procedure again and again, eliminating half of the remaining unknowns at each step. Resulting algorithm similar in a sense to FFT — O(N 2 log N ) operations to solve t ...
Projection (linear algebra)
Projection (linear algebra)

manifolds with many complex structures
manifolds with many complex structures

... we could take A = GL(m, F) for F = R, C or H, and then GL(n, A) = GL(mn, F) is a semisimple, noncompact Lie group. Left multiplication by A gives an A- module structure upon d = M (n, A). Putting C = E = {1} and S = d, it is easy to verify that this A- module structure satisfies the conditions of Th ...
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Holt McDougal Algebra 1 Solving Inequalities by Multiplying or

... Solve one-step inequalities by using multiplication. Solve one-step inequalities by using division. ...
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linearly independent
linearly independent

... x1v1+ x2v2+ … + xpvp=0 has only the trivial solution. • The set {v1, v2, … , vp} is said to be linearly dependent if there exist weights c1, c2, …, cp, not all zero, such that c1v1+ c2v2+ … + cpvp=0. ...
Van Der Vaart, H.R.; (1966)An elementary deprivation of the Jordan normal form with an appendix on linear spaces. A didactical report."
Van Der Vaart, H.R.; (1966)An elementary deprivation of the Jordan normal form with an appendix on linear spaces. A didactical report."

... matrix form (cf. eq. (1.l,2a», i.e., by their coordinates (re the same unidentified basis). Let L be such a matrix, and assume we have n linearly iadependent vectors ...
A brief introduction to pre
A brief introduction to pre

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< 1 ... 9 10 11 12 13 14 15 16 17 ... 54 >

Exterior algebra



In mathematics, the exterior product or wedge product of vectors is an algebraic construction used in geometry to study areas, volumes, and their higher-dimensional analogs. The exterior product of two vectors u and v, denoted by u ∧ v, is called a bivector and lives in a space called the exterior square, a vector space that is distinct from the original space of vectors. The magnitude of u ∧ v can be interpreted as the area of the parallelogram with sides u and v, which in three dimensions can also be computed using the cross product of the two vectors. Like the cross product, the exterior product is anticommutative, meaning that u ∧ v = −(v ∧ u) for all vectors u and v. One way to visualize a bivector is as a family of parallelograms all lying in the same plane, having the same area, and with the same orientation of their boundaries—a choice of clockwise or counterclockwise.When regarded in this manner, the exterior product of two vectors is called a 2-blade. More generally, the exterior product of any number k of vectors can be defined and is sometimes called a k-blade. It lives in a space known as the kth exterior power. The magnitude of the resulting k-blade is the volume of the k-dimensional parallelotope whose edges are the given vectors, just as the magnitude of the scalar triple product of vectors in three dimensions gives the volume of the parallelepiped generated by those vectors.The exterior algebra, or Grassmann algebra after Hermann Grassmann, is the algebraic system whose product is the exterior product. The exterior algebra provides an algebraic setting in which to answer geometric questions. For instance, blades have a concrete geometric interpretation, and objects in the exterior algebra can be manipulated according to a set of unambiguous rules. The exterior algebra contains objects that are not just k-blades, but sums of k-blades; such a sum is called a k-vector. The k-blades, because they are simple products of vectors, are called the simple elements of the algebra. The rank of any k-vector is defined to be the smallest number of simple elements of which it is a sum. The exterior product extends to the full exterior algebra, so that it makes sense to multiply any two elements of the algebra. Equipped with this product, the exterior algebra is an associative algebra, which means that α ∧ (β ∧ γ) = (α ∧ β) ∧ γ for any elements α, β, γ. The k-vectors have degree k, meaning that they are sums of products of k vectors. When elements of different degrees are multiplied, the degrees add like multiplication of polynomials. This means that the exterior algebra is a graded algebra.The definition of the exterior algebra makes sense for spaces not just of geometric vectors, but of other vector-like objects such as vector fields or functions. In full generality, the exterior algebra can be defined for modules over a commutative ring, and for other structures of interest in abstract algebra. It is one of these more general constructions where the exterior algebra finds one of its most important applications, where it appears as the algebra of differential forms that is fundamental in areas that use differential geometry. Differential forms are mathematical objects that represent infinitesimal areas of infinitesimal parallelograms (and higher-dimensional bodies), and so can be integrated over surfaces and higher dimensional manifolds in a way that generalizes the line integrals from calculus. The exterior algebra also has many algebraic properties that make it a convenient tool in algebra itself. The association of the exterior algebra to a vector space is a type of functor on vector spaces, which means that it is compatible in a certain way with linear transformations of vector spaces. The exterior algebra is one example of a bialgebra, meaning that its dual space also possesses a product, and this dual product is compatible with the exterior product. This dual algebra is precisely the algebra of alternating multilinear forms, and the pairing between the exterior algebra and its dual is given by the interior product.
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