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 town is inhabited by one of the oldest Christian communities in the world, although the size of the community has shrunk due to emigration.

Generally regarded as Sweden's oldest town, Birka ( along with Hovgården ) has been a UNESCO World Heritage Site since 1993.

In 1993, the oldest known version of the text, written on bamboo tablets, was found in a tomb near the town of Guodian () in Jingmen, Hubei, and dated prior to 300 BC.

At that point it was a part of Naarden, the oldest town in the Gooi area.

St Albans is Hertfordshire's oldest town, a modern city shaped by over 2000 years of continuous human occupation.

This is believed to be one of the oldest fertility rites in the UK ; revellers dance with the Oss through the streets of the town and even through the private gardens of the citizens, accompanied by accordion players and followers dressed in white with red or blue sashes who sing the traditional ' May Day ' song.

Another tourist destination is the town of Bochnia with its salt mine, Europe's oldest.

The House of the Nijmegen History is situated in a unique mediaeval chapel ' de Mariënburgkapel '; its mission is to let enjoy people of the history of the town and to be a guide for everybody who wants to visit the oldest city of the Netherlands.

The town of Bshaale, Lebanon claims to have the oldest olive trees in the world ( 4000 BC for the oldest ), but no scientific study supports these claims.

The original meaning of the adjective profane ( from Latin pro fano, " in front of " or " before, outside " the fanum, a sanctuary ) referred to items not belonging to the church, e. g., " The fort is the oldest profane building in the town, but the local monastery is older, and is the oldest building ," or " besides designing churches, he also designed many profane buildings ".

Morse's oldest daughter, Susan Walker Morse ( 1821-1885 ), would often visit her uncle Charles Pickering Walker who owned the Hacienda Concordia in the town of Guayama.

The oldest organised indigenous group in Trinidad and Tobago is the Santa Rosa Carib Community centred in the town of Arima, although several new groups have developed in recent years.

The local electrical shop, Eric Jackson's Ltd, has been open since 1928 and is the oldest retailer in the town.

* Tønsberg, the oldest surviving town in the Nordic countries, is founded.

At Ft. Garland, Colorado south of the Great Sand Dunes on U. S. Highway 160 the Fort Garland Museum is recommended and further south on Colorado State Highway 159 at San Luis, Colorado, the oldest town in Colorado, the bronze sculptures by Huberto Maestas, depicting the Stations of the Cross.

The old town hall, built in 1610, is the oldest preserved building in the city center and now is used as a civil registry office.

The oldest ghost town in Antarctica is on Deception Island, where in 1906, a Norwegian-Chilean company set up a whaling station at Whalers Bay, which they used as a base for their factory ship, the Gobernador Bories.

Asti's Palio is the oldest recorded one in Italy, and in modern times is held in the triangular Piazza Alfieri preceded by a medieval pageant through the old town on the 3rd Sunday of September.

The University of Cambridge, established at the start of the 13th century and situated in the town of the same name, is East Anglia's most well-known institution of higher learning, and is among the oldest and most famous universities in the world.

One of the oldest buildings in the town is The Market Hall, which is situated on Hole In The Wall street, or Stryd Twll Yn Wal as it is referred to by Welsh speakers.