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A point x in a space X is a limit point of a subset S if every open set containing x also contains a point of S other than x itself. This is equivalent to requiring that every neighbourhood of x contains a point of S other than x itself. Limit point compact See Weakly countably compact. Lindelöf A space is Lindelöf if every open cover has a ...
Note that some words contain an ae which may not be written æ because the etymology is not from the Greek -αι-or Latin -ae-diphthongs. These include: In instances of aer (starting or within a word) when it makes the sound IPA [ɛə]/[eə] (air). Comes from the Latin āër, Greek ἀήρ. When ae makes the diphthong / eɪ / (lay) or / aɪ ...
Root Meaning in English Origin language Etymology (root origin) English examples vac-empty: Latin: vacare: evacuate, vacancy, vacant, vacate, vacation, vacuous, vacuum vacc-
Continuity is expressed in terms of neighborhoods: f is continuous at some point x ∈ X if and only if for any neighborhood V of f(x), there is a neighborhood U of x such that f(U) ⊆ V. Intuitively, continuity means no matter how "small" V becomes, there is always a U containing x that maps inside V and whose image under f contains f(x).
V or v is the twenty-second letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is vee (pronounced / ˈ v iː / ), plural vees .
This list contains acronyms, initialisms, and pseudo-blends that begin with the letter V. For the purposes of this list: acronym = an abbreviation pronounced as if it were a word, e.g., SARS = severe acute respiratory syndrome , pronounced to rhyme with cars
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In logic, a set of symbols is commonly used to express logical representation. The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics.