projective object
11projective tests — A type of test, primarily used by psychologists in clinical contexts, designed to measure overall personality dynamics rather than discrete personality traits or dimensions. The tests involve presenting subjects with a relatively unstructured… …
12Object Relations Test — (ORT) A projective test , developed during the 1950s at the Tavistock Clinic in London, and based on the psychoanalytic theories of Melanie Klein . Klein argued that children introject as ‘good objects’ and ‘bad objects’ those images of a person… …
13Injective object — In mathematics, especially in the field of category theory, the concept of injective object is a generalization of the concept of injective module. This concept is important in homotopy theory and in theory of model categories. The dual notion is …
14Comfort object — A comfort object, transitional object, or security blanket is an item used to provide psychological comfort, especially in unusual or unique situations, or at bedtime for small children. Among toddlers, comfort objects may take the form of a… …
15Exceptional object — Many branches of mathematics study objects of a given type and prove a classification theorem. A common theme is that the classification results in a number of series of objects as well as a finite number of exceptions that don t fit into any… …
16Derived category — In mathematics, the derived category D(C) of an abelian category C is a construction of homological algebra introduced to refine and in a certain sense to simplify the theory of derived functors defined on C. The construction proceeds on the… …
17Derived functor — In mathematics, certain functors may be derived to obtain other functors closely related to the original ones. This operation, while fairly abstract, unifies a number of constructions throughout mathematics. Contents 1 Motivation 2 Construction… …
18List of mathematics articles (P) — NOTOC P P = NP problem P adic analysis P adic number P adic order P compact group P group P² irreducible P Laplacian P matrix P rep P value P vector P y method Pacific Journal of Mathematics Package merge algorithm Packed storage matrix Packing… …
19Module projectif — En mathématiques, un module projectif est un module P (à gauche par exemple) sur un anneau A tel que pour tout morphisme surjectif f : N → M entre deux A modules (à gauche) et pour tout morphisme g : P → M, il existe un morphisme… …
20Disjunction and existence properties — In mathematical logic, the disjunction property is satisfied by a logic if whenever a sentence is a theorem, then either ϕ is a theorem, or ψ is a theorem. The existence property or witness property is satisfied by a logic if whenever a sentence… …
