countable complex
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Countable set — Countable redirects here. For the linguistic concept, see Count noun. Not to be confused with (recursively) enumerable sets. In mathematics, a countable set is a set with the same cardinality (number of elements) as some subset of the set of… … Wikipedia
Complex number — A complex number can be visually represented as a pair of numbers forming a vector on a diagram called an Argand diagram, representing the complex plane. Re is the real axis, Im is the imaginary axis, and i is the square root of –1. A complex… … Wikipedia
complex — I UK [ˈkɒmpleks] / UK [kəmˈpleks] / US [kəmˈpleks] / US [ˈkɑmˌpleks] adjective *** 1) something that is complex has a lot of details or small parts that make it difficult to understand or deal with the complex web of relationships between the two … English dictionary
Split-complex number — A portion of the split complex number plane showing subsets with modulus zero (red), one (blue), and minus one (green). In abstract algebra, the split complex numbers (or hyperbolic numbers) are a two dimensional commutative algebra over the real … Wikipedia
inferiority complex — UK / US noun [countable] Word forms inferiority complex : singular inferiority complex plural inferiority complexes a strong feeling that you are not as good, important, or intelligent as other people … English dictionary
Oedipus complex — UK [ˈiːdɪpəs ˌkɒmpleks] / US [ˈedɪpəs ˌkɑmpleks] / US [ˈɪdɪpəs ˌkɑmpleks] noun [countable] Word forms Oedipus complex : singular Oedipus complex plural Oedipus complexes an unconscious sexual feeling that a son has towards his mother, at the same … English dictionary
persecution complex — UK / US noun [countable] Word forms persecution complex : singular persecution complex plural persecution complexes a mental illness in which you believe that everyone is unfair or cruel to you … English dictionary
Electra complex — noun (countable usually singular) technical the unconscious sexual feelings that a girl is supposed to have towards her father compare Oedipus complex … Longman dictionary of contemporary English
Hilbert space — For the Hilbert space filling curve, see Hilbert curve. Hilbert spaces can be used to study the harmonics of vibrating strings. The mathematical concept of a Hilbert space, named after David Hilbert, generalizes the notion of Euclidean space. It… … Wikipedia
Manifold — For other uses, see Manifold (disambiguation). The sphere (surface of a ball) is a two dimensional manifold since it can be represented by a collection of two dimensional maps. In mathematics (specifically in differential geometry and topology),… … Wikipedia
English grammar — is a body of rules (grammar) specifying how phrases and sentences are constructed in the English language. Accounts of English grammar tend to fall into two groups: the descriptivist , which describes the grammatical system of English; and the… … Wikipedia