One of the oldest and most accessible parts of combinatorics is graph theory, which also has numerous natural connections to other areas.

This area is one of the oldest parts of combinatorics, such as in Kirkman's schoolgirl problem proposed in 1850.

The oldest parts of the cathedral of Helsingør date back to the 13th century and tell us that the fishermen's village, as Helsingør was then, was a town of a certain importance.

Most of the major parts, however, were made elsewhere, including some probably fabricated at the West Milwaukee railshops where oldest brother William A. Davidson was then toolroom foreman.

Other text includes the Avestan Gathas, the Indian Vedas and the oldest parts of the Hebrew Bible.

By 1874, the Louvre Palace had achieved its present form of an almost rectangular structure with the Sully Wing to the east containing the square Cour Carrée and the oldest parts of the Louvre ; and two wings which wrap the Cour Napoléon, the Richelieu Wing to the north and the Denon Wing, which borders the Seine to the south.

The oldest parts of Malmö were built between 1300-1600 during its first major period of expansion.

The oldest preserved parts of the text are not thought to be appreciably older than around 400 BCE, though the origins of the story probably fall between the 8th and 9th centuries BCE.

In the innermost parts of the town a wide selection of half-timbered buildings from at least five different centuries are to be found ( including a 14th century structure one of Germany's oldest ), while around the outer fringes of the old town there are wonderful examples of Jugendstil buildings, dating from the late 19th and early 20th centuries.

However the oldest signed Portuguese sea chart is a Portolan made by Pedro Reinel in 1485 representing the Western Europe and parts of Africa, reflecting the explorations made by Diogo Cão.

The oldest parts of the canal date back to the 5th century BC, although the various sections were finally combined during the Sui Dynasty ( 581 – 618 CE ).

Situated east of Charing Cross, it forms one of the oldest parts of London and fronts the River Thames to the north.

In the first stage, represented by the oldest parts of the Hebrew Bible, it was polytheistic and creation involved a battle between the leader of the gods ( probably El ) and the forces of Chaos represented by chaos-monsters such as Leviathan.

The oldest parts of the defensive works of Danevirke near Hedeby at least date from the summer of 755 and were expanded with large works in the 10th century.

Trieste was one of the oldest parts of the Habsburg Monarchy from 1382 until 1918.

The Song of Deborah, which some textual scholars consider to be one of the oldest parts of the bible, suggests that Yahweh dwelt at Mount Seir, so many scholars favour a location in Nabatea ( modern Arabia ).

The oldest parts of the estate date to 1680, and it had been operated as both an inn and a farm.

The centre and oldest parts of Shepton Mallet are adjacent to the River Sheppey, and thus at the bottom of a valley, approximately above sea level.

The oldest remains found during excavations beneath the present nave in 1993 were, however, parts of the foundations of an Anglo-Saxon building, which had been constructed across a Roman road.

The oldest parts show alternate layers of green sandstone from Highley in Shropshire and yellow Cotswold limestone.

Though the period between the fall of the Western Roman Empire and the Muslim conquest is not well known ( due to lack of documents ), there is clear evidence of Byzantine presence in the city, as indicated by mosaics found in the oldest parts of the Cathedral, which was in early medieval times a paleo-Christian temple.

The counts of the Châtillon line resided at Blois more often than their predecessors, and the oldest parts of the château ( from the thirteenth century ) were built by them.

Since early 2006 several parts of Addiscombe have been in the process of extensive regeneration, notably the addition of housing to the site of the former Black Horse Pub ( which is thought by some to be the oldest site of a pub in the borough ) and the demolition of church buildings in Bingham Road in order to renovate the church halls and provide luxury retirement apartments.

The pink-fronted Rose House facing the area's pond dates to the 17th century, while Milbourne House facing The Green, the area's oldest, parts of which date to the 16th century, once belonged to Henry Fielding.

The mansion Fraeylemaborg ( a small ' castle ', the oldest parts of which are dated in the Middle Ages ) is located in Slochteren.

The oldest fossil evidence of complex life comes from the Lantian formation, at least 580 million years ago.

The oldest known mention of their existence in the region by the exonym Siamese is in a 12th century A. D. inscription at the Khmer temple complex of Angkor Wat in Cambodia, which refers to syam, or " dark brown " people.

* 3600 BC — Construction of the Ġgantija megalithic temple complex on the Island of Gozo, Malta: the world's oldest extant unburied free-standing structures, and the world's oldest religious structures.

The nearby Hanlin Academy, a complex of courtyards and buildings that housed " the quintessence of Chinese scholarship ... the oldest and richest library in the world ," caught fire.

At Saqqara, the oldest complete stone building complex known in history was built: Djoser's step pyramid, built during the third dynasty.

Besides being the first and largest affordable housing complex specifically available to the Chinatown population Confucius Plaza is also a cultural and institutional landmark, springing forth community organization, Asian Americans for Equality ( AAFE ), one of Chinatown's oldest political / community organizations, founded in 1974.

The oldest functioning Arizona State Prison complex, the Florence complex, is located in the town, and its preserved Main Street and open desert scenery was the setting of the major motion picture Murphy's Romance.

While some of the city's Italian immigrants still play games like bocce, and a few Belgian immigrants continue to raise and race homing pigeons, the city also hosts the nation's oldest and largest wiffleball tournament, the World Whiffleball Championship, held at Rose Park ’ s 22-field wiffleball complex.

A few miles south, St. Ignatius Church and cemetery at St. Thomas Manor comprise a complex designated as a National Historic Landmark, notable as a Jesuit mission center of the 17th century and possibly the oldest continuously operating Roman Catholic parish founded in the Thirteen Colonies which began the United States.

The oldest continuously operating Catholic parish in the United States, the complex is now a National Historic Landmark.

The restored courthouse square contains Michigan ’ s oldest courthouse as part of the Midwest ’ s most complete surviving mid-nineteenth century county government complex.

Thruway is part of a strip-mall complex that also boasts an outdoor-recreation store, tire-repair shop and the oldest of the village's Three Chinese restaurants.

Possibly the oldest part of the complex, it was designed around 1715 by either Lord Burlington or James Gibbs, who also designed the ‘ Pagan Temple ’ in the gardens.

The oldest building in the five-building complex is the two-story brick Binding Building ( 1888 ).

The Fuggerei is the world's oldest social housing complex still in use.

Being the oldest locks in the complex, they are now the main passage for recreational vessels and smaller inland ships.

It was a complex of 16th and 17th century buildings, one of which had a vaulted Norman cellar dating from the second half of the 12th century: possibly the oldest vaulted structure in Oxford.

The local geology is complex and incorporates some of the oldest rocks in England-a notable fault is named after the town.

The Great Tower is the oldest part of the complex and dates from the late 11th century.

The mill complex is also home to the oldest working, hand-wound clock in the country ( see image ).

The Eppler complex is the oldest building on campus for athletics and is the main practice area for cheerleading, gymnastics, dancing and fencing.

Janggyeong Panjeon complex is the oldest part of the temple and houses the 81, 258 wooden printing blocks from the Tripitaka Koreana.