Original video clip animation

Original đoạn phim animation (オリジナル・ビデオ・アニメーション, Orijinaru bideo animēshon), abbreviated as OVA (オーブイエー / オーヴィーエー / オヴァ, ōbuiē, ōvīē or ova) media (and sometimes as OAV, original animated video), are animated films và series made specially for release in home đoạn clip formats without prior showings on television or in theatres, though the first part of an OVA series may be broadcast for promotional purposes. OVA titles were originally made available on VHS, later becoming more popular on LaserDisc & eventually DVD. Starting in 2008, the term OAD (original animation DVD) began khổng lồ refer to lớn DVD releases published bundled with their source-material manga.

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Like anime made for television broadcast, OVAs sub-divide into episodes. OVA truyền thông (tapes, laserdiscs, or DVDs) usually contain just one episode each. Episode length varies from title to title: each episode may run from a few minutes lớn two hours or more. An episode length of 30 minutes occurs quite commonly, but no standard length exists. In some cases, the length of episodes in a specific OVA may vary greatly, for example in GaoGaiGar FINAL, the first 7 episodes last around 30 minutes, while the last episode lasts 50 minutes; the OVA Key the Metal Idol consists of 15 separate episodes, ranging in length from trăng tròn minutes lớn nearly two hours each; The OVA Hellsing Ultimate had released 10 episodes, ranging from 42 minutes to lớn 56 minutes. An OVA series can run anywhere from a single episode (essentially a direct-to-video movie) to lớn dozens of episodes in length. Probably the longest OVA series ever made, Legend of the Galactic Heroes, spanned 110 main episodes & 52 gaiden episodes.

Hyperbolic function

In mathematics, hyperbolic functions are analogs of the ordinary trigonometric, or circular functions. The basic hyperbolic functions are the hyperbolic sine "sinh" (/ˈsɪntʃ/ or /ˈʃaɪn/), và the hyperbolic cosine "cosh" (/ˈkɒʃ/), from which are derived the hyperbolic tangent "tanh" (/ˈtæntʃ/ or /ˈθæn/),hyperbolic cosecant "csch" or "cosech" (/ˈkoʊʃɛk/ or /ˈkoʊsɛtʃ/), hyperbolic secant "sech" (/ˈʃɛk/ or /ˈsɛtʃ/), và hyperbolic cotangent "coth" (/ˈkoʊθ/ or /ˈkɒθ/), corresponding to lớn the derived trigonometric functions. The inverse hyperbolic functions are the area hyperbolic sine "arsinh" (also called "asinh" or sometimes "arcsinh") và so on.

Just as the points (cos t, sin t) khung a circle with a unit radius, the points (cosh t, sinh t) size the right half of the equilateral hyperbola. The hyperbolic functions take a real argument called a hyperbolic angle. The form size of a hyperbolic angle is twice the area of its hyperbolic sector. The hyperbolic functions may be defined in terms of the legs of a right triangle covering this sector.

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Sinhala alphabet

The Sinhalese alphabet (Sinhala:සිංහල අක්ෂර මාලාව) (Sinhala Akṣara Malava) is an abugida used by the Sinhala people in Sri Lanka and elsewhere to write the Sinhala language và also the liturgical languages Pali and Sanskrit. Being a member of the Brahmic family of scripts, the Sinhalese script can trace its ancestry back more than 2,500 years.

Sinhalese is often considered two alphabets, or an alphabet within an alphabet, due to the presence of two sets of letters. The core set, knosunglasshutusa.com as the śuddha siṃhala (pure Sinhalese, ශුද්ධ සිංහල) or eḷu hōḍiya (Eḷu alphabet එළු හෝඩිය ), can represent all native phonemes. In order khổng lồ render Sanskrit and Pali words, an extended set, the miśra siṃhala (mixed Sinhalese, මිශ්‍ර සිංහල), is available.


The alphabet is written from left to right. The Sinhalese script is an abugida, as each consonant has an inherent vowel (/a/), which can be changed with the different vowel signs or removed (see image on left for examples).

Most of the Sinhalese letters are curlicues; straight lines are almost completely absent from the alphabet. This is because Sinhala used khổng lồ be written on dried palm leaves, which would split along the veins on writing straight lines. This was undesirable, và therefore, the round shapes were preferred.