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The Chvátal graph is triangle-free: its girth (the length of its shortest cycle) is four. It is 4- regular: each vertex has exactly four neighbors. Its chromatic number is 4: it can be colored using four colors, but not using only three. It is, as Chvátal observes, the smallest possible 4-chromatic 4-regular triangle-free graph; the only ...
The Delta Barrage is barrage -type dam that was constructed intermittently beginning in 1833 to its initial completion in 1862. Its purpose was to improve irrigation and navigation along the main Rosetta and Damietta branches of the Nile downstream of the point where they divide north of Cairo, Egypt. At its first operation however, the ...
Saloum Delta National Park or Parc National du Delta du Saloum in Senegal, is a 760-square-kilometre (190,000-acre) national park. Established in 1976, it is situated within the Saloum Delta at the juncture of the Saloum River and the North Atlantic. The park, which forms part of a UNESCO World Heritage Site and a Ramsar Convention site, lies ...
Delta Sextantis. Delta Sextantis (δ Sex, δ Sextantis) is a solitary [11] star in the equatorial constellation of Sextans. With an annual parallax shift of 10.13 mas, [1] it lies at a distance of around 322 light years from the Sun. This star is faintly visible to the naked eye, having an apparent visual magnitude of +5.25. [2]
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Delta Leonis ( δ Leonis, abbreviated Delta Leo, δ Leo ), also named Zosma / ˈzɒzmə /, [12] [13] is a star in the zodiac constellation of Leo. Based upon parallax measurements, it lies at a distance of about 58.4 light-years (17.9 parsecs) from the Sun. [1]
Penelope Delta (Greek: Πηνελόπη Δέλτα; 24 April 1874 – 2 May 1941) was a Greek author. She is widely celebrated for her contributions to the field of children's literature. She is widely celebrated for her contributions to the field of children's literature.
Delta (also called "Delta" in the original language) is a 2008 Hungarian drama film directed by Kornél Mundruczó and starring violinist Félix Lajkó in a non-musical acting role and actress Orsi Tóth. [1] [2] Supporting cast include Sándor Gáspár as the stepfather, Lili Monori as the mother, Sándor Fábián as the uncle, Tamás Polgár ...