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  2. Bengali grammar - Wikipedia

    en.wikipedia.org/wiki/Bengali_grammar

    In non-rarhi varieties of Bengali, that is to say northern and eastern dialects, "a" is substituted for "e" in second-person familiar forms; thus tumi bolla, khulla, khella etc. which is the original inflection, the “e” in contrast is a vowel-harmonised variant of the former, having gone through a process called abhisruti.

  3. Topology - Wikipedia

    en.wikipedia.org/wiki/Topology

    A three-dimensional model of a figure-eight knot.The figure-eight knot is a prime knot and has an Alexander–Briggs notation of 4 1.. Topology (from the Greek words τόπος, 'place, location', and λόγος, 'study') is the branch of mathematics concerned with the properties of a geometric object that are preserved under continuous deformations, such as stretching, twisting, crumpling ...

  4. Bengali alphabet - Wikipedia

    en.wikipedia.org/wiki/Bengali_alphabet

    Bengali punctuation marks, apart from the downstroke দাড়ি dari (।), the Bengali equivalent of a full stop, have been adopted from western scripts and their usage is similar: Commas, semicolons, colons, quotation marks, etc. are the same as in English. Capital letters are absent in the Bengali script so proper names are unmarked.

  5. Atlas (topology) - Wikipedia

    en.wikipedia.org/wiki/Atlas_(topology)

    In mathematics, particularly topology, an atlas is a concept used to describe a manifold. An atlas consists of individual charts that, roughly speaking, describe individual regions of the manifold. In general, the notion of atlas underlies the formal definition of a manifold and related structures such as vector bundles and other fiber bundles.

  6. Bengali language - Wikipedia

    en.wikipedia.org/wiki/Bengali_language

    Bengali exhibits diglossia, though some scholars have proposed triglossia or even n-glossia or heteroglossia between the written and spoken forms of the language. [41] Two styles of writing have emerged, involving somewhat different vocabularies and syntax: [78] [80]

  7. Topographic map - Wikipedia

    en.wikipedia.org/wiki/Topographic_map

    Sergeant Chris D. Washington checking his Topographic map during a morning deer hunt in Kilgore, Texas A topographic map of Stowe, Vermont with contour lines Part of the same map in a perspective shaded relief view illustrating how the contour lines follow the terrain Sheet #535 (2013 version; second digital edition) of MTN50 Spanish National Topographic map series, covering Algete town (near ...

  8. Homeomorphism - Wikipedia

    en.wikipedia.org/wiki/Homeomorphism

    A chart of a manifold is a homeomorphism between an open subset of the manifold and an open subset of a Euclidean space. The stereographic projection is a homeomorphism between the unit sphere in ⁠ R 3 {\displaystyle \mathbb {R} ^{3}} ⁠ with a single point removed and the set of all points in ⁠ R 2 {\displaystyle \mathbb {R} ^{2}} ⁠ (a ...

  9. Romanisation of Bengali - Wikipedia

    en.wikipedia.org/wiki/Romanisation_of_Bengali

    The aim of romanisation is not the same as phonetic transcription. Rather, romanisation is a representation of one writing system in Roman (Latin) script. If Bengali script has "ত" and Bengalis pronounce it /to/ there is nevertheless an argument based on writing-system consistency for transliterating it as "त" or "ta."