Kara Del

Kara Del or Qara Del was a Mongol kingdom that existed in Hami in present-day Xinjiang. It was founded by the Yuan prince Gunashiri, a descendant of Chagatai Khan, in the late 14th century (c.1389), and ruled by the Chagatayids thereafter until 1463. It was destroyed as results of the wars between Ming China and Oirat Mongols and dynastic succession struggles in 1513. Kara Del means "Black chest" in the Mongolian language.

History

After the demise of the Northern Yuan emperor Tögüs Temür, Kublai Khan's (r. 1260-1294) descendant, the throne of Mongolia passed into the hands of Jorightu Khan Yesüder, an Arib-Bokid prince, in 1388. With the anarchy after the Mongol Emperor's death, Chagatai Khan's descendant, Gunashiri, who followed the Yuan court's retreat into Mongolia, attempted to break away from the new Khan's rule. By 1390, Gunashiri, himself Buddhist, successfully established himself in Hami where the Uighurs lived.

The Kara Del accepted the Ming supremacy to save its existence in 1404, and came under Ming control as Hami Prefecture. The Kara Del ruler Enke-temur was granted the title Zhongshunwang (meaning the obedient prince) by the Ming court. However, they were threatened by Mongolian Emperors, particularly during the reign of Yesüder, from the north. The Oirats from Western Mongolia pressured into the kingdom from 15th century on. Their leader and Yuan taishi, Esen, (future Emperor of the Mongols) forced the Kara Del khan to submit in 1430s. The kingdom was one of two Chagatyid realms conquered by Esen, other one being Moghulistan (c. 1432). He extensively supported the rivalry between successor of Gunashiri and intervened in their dynastic struggles. The Ming Dynasty was trying to place their puppet on the throne to secure their claim at the time.

Del

Del, or nabla, is an operator used in mathematics, in particular, in vector calculus, as a vector differential operator, usually represented by the nabla symbol ∇. When applied to a function defined on a one-dimensional domain, it denotes its standard derivative as defined in calculus. When applied to a field (a function defined on a multi-dimensional domain), del may denote the gradient (locally steepest slope) of a scalar field (or sometimes of a vector field, as in the Navier–Stokes equations), the divergence of a vector field, or the curl (rotation) of a vector field, depending on the way it is applied.

Strictly speaking, del is not a specific operator, but rather a convenient mathematical notation for those three operators, that makes many equations easier to write and remember. The del symbol can be interpreted as a vector of partial derivative operators, and its three possible meanings—gradient, divergence, and curl—can be formally viewed as the product with a scalar, dot product, and cross product, respectively, of the del "operator" with the field. These formal products do not necessarily commute with other operators or products.

Deel (clothing)

A deel (Mongolian: дээл [teːɮ]; Buryat: дэгэл) is an item of traditional clothing commonly worn since centuries ago among the Mongols and other nomadic tribes of Central Asia, including various Turkic peoples, and can be made from cotton, silk, wool, or brocade. The deel is still commonly worn by both men and women outside major towns, especially by herders. In urban areas, deels are mostly only worn by elderly people, or on festive occasions. The deel appears similar to a caftan or an old European folded tunic. Deels typically reach to below the wearer's knees and fan out at the bottom and are commonly blue, olive, or burgundy, though there are deels in a variety of other colors.

Description

The deel looks like a large overcoat when not worn. Instead of buttoning together in the middle, the sides are pulled against the wearers body, the right flap close to the body with the left covering. On the right side of the wearer are typically 5 or 6 clasps to hold the top flap in place. There is one clasp below the armpit, three at the shoulder, and either one or two at the neckline.

Del (disambiguation)

Del or DEL may refer to:

In computing: