Delta commonly refers to:
Delta may also refer to:
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a classification in the arithmetical hierarchy
a classification in the analytical hierarchy
a classification in the polynomial hierarchy
, an inverted delta representing del, a vector differential operator |
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There is more than one place called Delta
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Category: Disambiguation
DELTA (from the shape of the Gr. letter A, delta, originally used of the mouth of the Nile), a tract of land enclosed by the diverging branches of a river's mouth and the seacoast, and traversed by other branches of the stream. This triangular tract is formed from the fine silt brought down in suspension by a muddy river and deposited when the river reaches the sea. When tidal currents are feeble, the delta frequently advances some distance seawards, forming a local prolongation of the coast.
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Categories: DED-DEP
Wikipedia de
Delta n.
| Common letters | |||
|---|---|---|---|
| Αa | A | Μm | Em |
| Βb | Be | Νn | En |
| Gg | Ge | Οο | O |
| Δd | De | Πp | Pe |
| h | Ha | Жж | Zhe |
| Εɛ | E | Rr | Ar |
| Ζz | Ze | Ss | Es |
| Ηe | Ee | Τt | Te |
| Θө | Eth | Uu | U |
| Ιi | I | Ff | Ef |
| Jj | Je | Ww | Wa |
| Κk | Ka | Χx | Xa |
| Ll | El | ОWоw | We |
| Vv | Ve | ||
| Uncommon letters | |||
| Digamma | Qoppa | ||
| San | Sampi | ||
| Other letters | |||
| Stigma | Sho | ||
| Greek alphabet | |||
Delta (uppercase/lowercase Δ δ), is the letter of the Greek alphabet, used to represent the "d" sound in Ancient and Modern Greek. In the system of Greek numerals, it has a value of 4. Letters that came from it include the Roman D and Cyrillic Д.
The upper-case letter Δ can be used as symbol representing "change".
In molecular chemistry the lower case greek letter δ is used to represent a partial charge. This is always less than the unit charge associated with an ion but has no real fixed value.
A river delta is so named because its shape approximates the upper-case letter delta.
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