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2. Y-Δ transform - Wikipedia

   en.wikipedia.org/wiki/Y-Δ_transform

   Y-Δ transform. In electrical engineering, the Y-Δ transform, also written wye-delta and also known by many other names, is a mathematical technique to simplify the analysis of an electrical network. The name derives from the shapes of the circuit diagrams, which look respectively like the letter Y and the Greek capital letter Δ.

3. Dirac delta function - Wikipedia

   en.wikipedia.org/wiki/Dirac_delta_function

   t. e. In mathematical analysis, the Dirac delta function (or δ distribution ), also known as the unit impulse, [1] is a generalized function on the real numbers, whose value is zero everywhere except at zero, and whose integral over the entire real line is equal to one. [2] [3] [4] Since there is no function having this property, modelling the ...

4. GEHA - Wikipedia

   en.wikipedia.org/wiki/GEHA

   Website. geha.com. GEHA (Government Employees Health Association) is a self-insured, not-for-profit association providing medical and dental plans to federal employees and retirees and their families through the Federal Employees Health Benefits ( FEHB) program and the Federal Employees Dental and Vision Insurance Program (FEDVIP).

5. Levi-Civita connection - Wikipedia

   en.wikipedia.org/wiki/Levi-Civita_connection

   Levi-Civita connection. In Riemannian or pseudo-Riemannian geometry (in particular the Lorentzian geometry of general relativity ), the Levi-Civita connection is the unique affine connection on the tangent bundle of a manifold (i.e. affine connection) that preserves the ( pseudo-) Riemannian metric and is torsion -free.

6. History of Delta Air Lines - Wikipedia

   en.wikipedia.org/wiki/History_of_Delta_Air_Lines

   Delta added jet airliners to its fleet in the 1960s; the Douglas DC-8 entered service in September 1959. Delta's new red, white, and blue triangle logo (the "widget") on their aircraft represented the jet's swept wing, as well as the Greek letter delta. Convair 880s were added in 1960 (they set a coast-to-coast record) and in 1965 the DC-9 ...

7. Connection form - Wikipedia

   en.wikipedia.org/wiki/Connection_form

   Connection form. In mathematics, and specifically differential geometry, a connection form is a manner of organizing the data of a connection using the language of moving frames and differential forms . Historically, connection forms were introduced by Élie Cartan in the first half of the 20th century as part of, and one of the principal ...

8. Hartsfield–Jackson Atlanta International Airport - Wikipedia

   en.wikipedia.org/wiki/Hartsfield–Jackson...

   In addition to hosting Delta's corporate headquarters, Hartsfield–Jackson is also the home of Delta's Technical Operations Center, which is the airline's primary maintenance, repair and overhaul arm. Aside from Delta, Hartsfield-Jackson is also a focus city for low-cost carriers Frontier Airlines and Southwest Airlines. The airport has ...

9. Delta Junction, Alaska - Wikipedia

   en.wikipedia.org/wiki/Delta_Junction,_Alaska

   1401104. Website. ci .delta-junction .ak .us. Delta Junction ( Russian: Делта-Джанкшен; Ukrainian: Делта-Джанкшен, romanized : Delta Dzhankshen) is a city in the Southeast Fairbanks Census Area, Alaska, United States. As of the 2010 census, the population was 958, up from 840 in 2000. The 2018 estimate was down to 931.