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The Urdu alphabet (Urdu: اُردُو حُرُوفِ تَہَجِّی, romanized: urdū ḥurūf-i tahajjī) is the right-to-left alphabet used for writing Urdu. It is a modification of the Persian alphabet , which itself is derived from the Arabic script .
In topology, a second-countable space, also called a completely separable space, is a topological space whose topology has a countable base.More explicitly, a topological space is second-countable if there exists some countable collection = {} = of open subsets of such that any open subset of can be written as a union of elements of some subfamily of .
In linguistics, a mass noun, uncountable noun, non-count noun, uncount noun, or just uncountable, is a noun with the syntactic property that any quantity of it is treated as an undifferentiated unit, rather than as something with discrete elements. Uncountable nouns are distinguished from count nouns.
A set is countable if it can be enumerated, that is, if there exists an enumeration of it. Otherwise, it is uncountable. For example, the set of the real numbers is uncountable. A set is finite if it can be enumerated by means of a proper initial segment {1, ..., n} of the natural numbers, in which case, its cardinality is n.
In a measure space, such as the real line, countable sets are null. The set of rational numbers is countable, so almost all real numbers are irrational. [12] Georg Cantor's first set theory article proved that the set of algebraic numbers is countable as well, so almost all reals are transcendental. [13] [sec 6] Almost all reals are normal. [14]
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According to the Geological Institute of America, some believe zircon derives from the Arabic "zarkun," meaning "cinnabar" or "vermilion," while others say it comes from the Persian "zargun ...
This makes eliding "Los" from (6) infelicitous, and the resulting sentence ungrammatical. This analysis excludes bare plurals from the subject and indirect object positions, which is mainly representative of sentences in Spanish and Italian (though further restrictions apply in much the same way indefinite nouns are treated in both languages).