dual basis
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Dual basis — In linear algebra, a dual basis is a set of vectors that forms a basis for the dual space of a vector space. For a finite dimensional vector space V, the dual space V* is isomorphic to V, and for any given set of basis vectors {e1, …, en} of V,… … Wikipedia
Dual basis in a field extension — In mathematics, the linear algebra concept of dual basis can be applied in the context of a finite extension L/K, by using the field trace. This requires the property that the field trace TrL/K provides a non degenerate quadratic form over K.… … Wikipedia
Basis (linear algebra) — Basis vector redirects here. For basis vector in the context of crystals, see crystal structure. For a more general concept in physics, see frame of reference. In linear algebra, a basis is a set of linearly independent vectors that, in a linear… … Wikipedia
Dual space — In mathematics, any vector space, V, has a corresponding dual vector space (or just dual space for short) consisting of all linear functionals on V. Dual vector spaces defined on finite dimensional vector spaces can be used for defining tensors… … Wikipedia
Dual wavelet — In mathematics, a dual wavelet is the dual to a wavelet. In general, the wavelet series generated by a square integrable function will have a dual series, in the sense of the Riesz representation theorem. However, the dual series is not in… … Wikipedia
Dual inheritance theory — (DIT), also known as gene culture coevolution, was developed in the late 1970s and early 1980s to explain how human behavior is a product of two different and interacting evolutionary processes: genetic evolution and cultural evolution. DIT is a… … Wikipedia
Dual-Use — (engl. mit doppeltem Verwendungszweck, korrektes Deutsch: Dual Use) ist ein dem Englischen entlehnter Begriff, der überwiegend im Export Warenverkehr die prinzipielle Verwendbarkeit einer Technik, einer Maschine oder von Aggregaten sowohl zu… … Deutsch Wikipedia
Dual-Use-Güter — Dual Use (engl. mit doppeltem Verwendungszweck, korrektes Deutsch: Dual Use) ist ein dem Englischen entlehnter Begriff, der überwiegend im Export Warenverkehr die prinzipielle Verwendbarkeit einer Technik, einer Maschine oder von Aggregaten… … Deutsch Wikipedia
Dual-Use-Technologie — Dual Use (engl. mit doppeltem Verwendungszweck, korrektes Deutsch: Dual Use) ist ein dem Englischen entlehnter Begriff, der überwiegend im Export Warenverkehr die prinzipielle Verwendbarkeit einer Technik, einer Maschine oder von Aggregaten… … Deutsch Wikipedia
DUAL (cognitive architecture) — DUAL is a general cognitive architecture integrating the connectionist and symbolic approaches at the micro level. DUAL is based on decentralized representation and emergent computation. It was inspired by the Society of Mind idea proposed by… … Wikipedia
Dual energy X-ray absorptiometry — (DXA, previously DEXA) is a means of measuring bone mineral density (BMD). Two X ray beams with differing energy levels are aimed at the patient s bones. When soft tissue absorption is subtracted out, the BMD can be determined from the absorption … Wikipedia
