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Costa's minimal surface, cropped by a sphere STL model of the surface. In mathematics, Costa's minimal surface or Costa's surface, is an embedded minimal surface discovered in 1982 by the Brazilian mathematician Celso José da Costa. It is also a surface of finite topology, which means that it can be formed by puncturing a compact surface.
Costa's minimal surface: Famous conjecture disproof. Described in 1982 by Celso Costa and later visualized by Jim Hoffman. Jim Hoffman, David Hoffman and William Meeks III then extended the definition to produce a family of surfaces with different rotational symmetries. the Chen–Gackstatter surface family, adding handles to the Enneper surface.
Created Date: 8/30/2012 4:52:52 PM
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The transition to the analysis of an autonomous dynamical model of the Costas loop (in place of the non-autonomous one) allows one to overcome the difficulties related to modeling the Costas loop in the time domain, where one has to simultaneously observe a very fast time scale of the input signals and slow time scale of signal's phase.
Costa Rica has six different ecosystems, and is considered a biodiversity hotspot– having 5% of the world's total biodiversity within 0.1% of its landmass. [1] The decline of the Costa Rican rainforest was due to unplanned logging in the mid-1900s. Loggers cleared much of the tropical rainforest for profit. [2]
However, awareness of neurotransmitters and the structure of neurons is not by itself enough to understand higher levels of neuroanatomic structure or behaviour: "The whole is more than the sum of its parts." All levels must be considered as being equally important: cf. transdisciplinarity, Nicolai Hartmann's "Laws about the Levels of Complexity."
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