- comb space
- топ.гребёнка
English-Russian scientific dictionary. 2008.
comb space
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Comb space — In mathematics, particularly topology, a comb space is a subspace of that looks rather like a comb. The comb space has some rather interesting properties and provides interesting counterexamples. The topologist s sine curve has similar properties … Wikipedia
Comb (disambiguation) — A comb is a toothed device used for straightening and cleaning hair or fibers. Comb may also refer to: Comb (anatomy), a fleshy growth or crest on the top of the head of certain birds and reptiles. Combing, a method used to straighten fibers for… … Wikipedia
Comb sort — Class Sorting algorithm Data structure Array Worst case performance O(n log n)[1] … Wikipedia
Comb drive — Comb drives capacitive actuators, often used linear actuators that utilize electrostatic forces that act between two electrically conductive combs. Comb drive actuators typically operate at the micro or nanometer scale and are generally… … Wikipedia
Comb filter — In signal processing, a comb filter adds a delayed version of a signal to itself, causing constructive and destructive interference. The frequency response of a comb filter consists of a series of regularly spaced spikes, giving the appearance of … Wikipedia
comb pottery — also called combware main pottery type of the Korean Neolithic Period (c. 3000–700 BC). Derived from a Siberian Neolithic prototype, the pottery is made of sandy clay, and its colour is predominantly brown. The vessel form found in early… … Universalium
Locally connected space — In this topological space, V is a neighbourhood of p and it contains a connected neighbourhood (the dark green disk) that contains p. In topology and other branches of mathematics, a topological space X is locally connected if every point admits… … Wikipedia
Connected space — For other uses, see Connection (disambiguation). Connected and disconnected subspaces of R² The green space A at top is simply connected whereas the blue space B below is not connected … Wikipedia
Contractible space — In mathematics, a topological space X is contractible if the identity map on X is null homotopic, i.e. if it is homotopic to some constant map.[1][2] Intuitively, a contractible space is one that can be continuously shrunk to a point. A… … Wikipedia
Hedgehog space — In mathematics, a hedgehog space is a topological space, consisting of a set of spines joined at a point. For any cardinal number K, the K hedgehog space is formed by taking the disjoint union of K real unit intervals identified at the origin.… … Wikipedia
Logarithmically-spaced Dirac comb — Like the standard Dirac comb, the logarithmically spaced Dirac comb consists of an infinite sequence of Dirac delta functions. In the case of the logarithmically spaced comb, these are spaced in octave intervals, i.e., the delta functions are… … Wikipedia
