4 2-kiloyear event - significado y definición. Qué es 4 2-kiloyear event
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Qué (quién) es 4 2-kiloyear event - definición

SEVERE CLIMATIC EVENT; DEFINES THE BEGINNING OF THE MEGHALAYAN AGE; STARTED IN CA. 2200 BCE; LASTED THE ENTIRE 22ND CENTURY BCE; RELATED TO THE COLLAPSES OF THE OLD KINGDOM IN EGYPT, AKKADIAN EMPIRE, LIANGZHU CULTURE, AND INDUS VALLEY CIVILIZATION
22nd century BCE drought; 22nd century BC drought; 4.2ka event; Circa 2200 BC climate event; 4.2 kiloyear event
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1 − 2 + 3 − 4 + ⋯         
  • Some partials of 1 − 2''x'' + 3''x''<sup>2</sup> + ...; 1/(1 + ''x'')<sup>2</sup>; and limits at 1
  • 4}}. Positive values are shown in white, negative values are shown in brown, and shifts and cancellations are shown in green.
  • 1755}}.
  • 1 − 1 + 1 − 1 + ....}}
  • 4}}
INFINITE SERIES
1 - 2 + 3 - 4 + · · ·; 1 - 2 + 3 - 4 + …; 1 - 2 + 3 - 4 + ...; 1 − 2 + 3 − 4 + …; 1−2+3−4+···; 1-2+3-4+···; 1-2+3-4+…; 1-2+3-4+...; 1−2+3−4+…; 1−2+3−4+...; 1-2+3-4+; 1-2+3-4; 1−2+3−4+; 1−2+3−4; 1 − 2 + 3 − 4 +; 1 − 2 + 3 − 4; 1 - 2 + 3 - 4 +; 1 - 2 + 3 - 4; 1 − 2 + 3 − 4 + . . .; 1 - 2 + 3 - 4 + . . .; 1 − 2 3 − 4 · · ·; 1 - 2 + 3 - 4 ...; 1 − 2 + 3 − 4 + · ·; 1 − 2 + 3 − 4 + ·; 1- 2 + 3 - 4; 1 − 2 + 3 − 4 + ...; 1 − 2 + 3 − 4 + ···; 1 − 2 + 3 − 4 + · · ·
In mathematics, 1 − 2 + 3 − 4 + ··· is an infinite series whose terms are the successive positive integers, given alternating signs. Using sigma summation notation the sum of the first m terms of the series can be expressed as
2-4-4-2         
ARTICULATED LOCOMOTIVE WHEEL ARRANGEMENT
2-4-4-2T
In Whyte notation, 2-4-4-2 refers to a railroad steam locomotive that has two leading wheels followed by four coupled driving wheels, a second set of four coupled driving wheels, and two trailing wheels.
2 Chronicles 4         
  • An artist's rendition of the Molten Sea (or Brazen Sea) of Solomon, published in the 1906 Jewish Encyclopedia.
  • Molten Sea illustration in the Holman Bible, 1890
SECOND BOOK OF CHRONICLES, CHAPTER 4
2 Chronicles 4:2
2 Chronicles 4 is the fourth chapter of the Second Book of Chronicles the Old Testament of the Christian Bible or of the second part of the Books of Chronicles in the Hebrew Bible. The book is compiled from older sources by an unknown person or group, designated by modern scholars as "the Chronicler", and had the final shape established in late fifth or fourth century BCE.

Wikipedia

4.2-kiloyear event

The 4.2-kiloyear (thousand years) BP aridification event (long-term drought) was one of the most severe climatic events of the Holocene epoch. It defines the beginning of the current Meghalayan age in the Holocene epoch.

Starting around 2200 BC, it probably lasted the entire 22nd century BC. It has been hypothesised to have caused the collapse of the Old Kingdom in Egypt as well as the Akkadian Empire in Mesopotamia, and the Liangzhu culture in the lower Yangtze River area. The drought may also have initiated the collapse of the Indus Valley Civilisation, with some of its population moving southeastward to follow the movement of their desired habitat, as well as the migration of Indo-European-speaking people into India.

Some scientists disagree with that conclusion, citing evidence that the event was not a global drought and did not happen in a clear timeline.