Complex

A complex is a whole that comprehends a number of intricate parts, especially one with interconnected or mutually related parts; for example, a complex of buildings.

Complex may refer to:

Science

• Coordination complex, also called a "coordination compound" or "metal complex", a structure consisting of a central atom or molecule weakly connected to surrounding atoms or molecules (ligands)
• Protein complex
• Complex (psychology), a group of mental factors that are unconsciously associated by the individual with a particular subject and influence the individual's attitude and behavior
• Complex (taxonomy), in biology, a cluster of species so closely related that they intergrade, can interbreed, and are difficult to firmly distinguish except at the extremes of their ranges
• A group of organisms involved in mimicry, being made of one or more mimics, models or dupes
• CoMPLEX is an interdisciplinary centre at UCL into biology and biomedicine.

Mathematics

• Complex number, an extension of real numbers obtained by adjoining imaginary numbers
• Complex system, a system of interconnected simple parts that together exhibit a high degree of computational complexity from which emerges a higher order behavior
• Complex analysis, the study of functions of complex numbers.
• An element of a complex algebra or field of sets.
• Chain complex, a (possibly long) sequence of maps
• Simplicial complex, a kind of topological space that can be divided into fully adjacent triangles, or more generally, into simplices
• CW complex, or closure-finite weak complex, a kind of topological space, a generalization of the simplicial complex
• Line complex, a 3-dimensional family of lines in space.

As a name

• Complex (band)
• Complex (magazine)

See also

• Complexity
• Complexity (disambiguation)
• Complexity theory