The Order of Santiago (Galician: Orde de Santiago, Spanish: Orden de Santiago) was founded in the 12th century, and owes its name to the national patron of Galicia and Spain, Santiago (St. James the Greater), under whose banner the Christians of Galicia and Asturias began in the 9th century to combat and drive back the Muslims of the Iberian Peninsula.

Santiago de Compostela, in Galicia, the centre of devotion to this Apostle, is neither the cradle nor the principal seat of the order. Two cities contend for the honour of having given it birth, León in the kingdom of that name, and Uclés in Castile. At that time (1157–1230) the royal dynasty was divided into two rival branches, which rivalry tended to obscure the beginnings of the order. The Knights of Santiago had possessions in each of the kingdoms, but Ferdinand II of León and Alfonso VIII of Castile, in bestowing them, set the condition that the seat of the order should be in their respective states. Hence arose long disputes which only ended in 1230 when Ferdinand III, the Saint, united both crowns. Thenceforth, Uclés, in Cuenca Province, was regarded as the headquarters of the order; there the grand master habitually resided, aspirants passed their year of probation, and the rich archives of the order were preserved until united in 1869 with the "Archivo Histórico Nacional" of Madrid. The order received its first rule in 1171 from Cardinal Jacinto (later Pope Celestine III), then legate in Iberia of Pope Alexander III. This first Grand Master was Pedro Fernández de Castro, also known as Pedro Fernández de Fuentecalada, a soldier of King Ferdinand II and a former crusader.

Santiago (Spanish:  Santiago de Chile (help·info)), also Santiago de Chile, is the capital and largest city of Chile, and the center of its largest conurbation (Greater Santiago). It is located in the country's central valley, at an elevation of 520 m (1,706.04 ft) above mean sea level. Although Santiago is the capital, the National Congress of Chile meets in the coastal town of Valparaíso, 120 km to the west.

Chile's steady economic growth has transformed Santiago into Latin America's most modern metropolitan area, with extensive suburban development, dozens of shopping centers, and impressive high-rise architecture. It has a very modern transport infrastructure, including the steadily growing underground Santiago Metro, an effort at modernizing public bus transport and a free flow toll-based ring road and inner city highway system, part of which is tunneled underneath a large section of the city's main river Mapocho connecting the Eastern and Western end of the city in a 25-minute drive. Santiago is the regional headquarters to many multinationals and a financial center.

In mathematics, big O notation is used to describe the limiting behavior of a function when the argument tends towards a particular value or infinity, usually in terms of simpler functions. It is a member of a larger family of notations that is called Landau notation, Bachmann–Landau notation (after Edmund Landau and Paul Bachmann), or asymptotic notation. In computer science, big O notation is used to classify algorithms by how they respond (e.g., in their processing time or working space requirements) to changes in input size.

Big O notation characterizes functions according to their growth rates: different functions with the same growth rate may be represented using the same O notation. A description of a function in terms of big O notation usually only provides an upper bound on the growth rate of the function. Associated with big O notation are several related notations, using the symbols o, Ω, ω, and Θ, to describe other kinds of bounds on asymptotic growth rates.

Big O notation is also used in many other fields to provide similar estimates.

Raymond Martin (Raymart) Santiago (born July 20, 1973 in Manila, Philippines) is a Filipino action star and comedian who belongs to one of Philippine showbiz's most recognizable families.

He comes from a prominent Philippine showbiz family—the Santiagos. His father is the late director Pablo Santiago Sr. He is the youngest among the Santiago siblings. He and two of his elder brothers are also known in their respective fields in show business—them being Randy Gerard (or Randy Santiago) who is a singer/actor/host and Rowell who is a director/actor. Their other brother is Reilly Pablo Jr., who was married to another local actress Sherilyn Reyes and also tried his hand at film production.

He married actress Claudine Barretto on March 27, 2006 in Tagaytay Highlands in Tagaytay City, Cavite[1]. Their wedding was attended by ABS-CBN and GMA Network executives, their families (except Gretchen Barretto, who at the time of the wedding was estranged with Claudine), their showbiz and non-showbiz friends. Claudine gave birth to their son on July 19, 2007—a day before the couple’s birthday. Rodrigo Santino joins big sister Sabina Natasha(b 2004), whom they adopted at 2 months old in July 2004. Both Claudine and Raymart are Born-again Christians which they attended at Victory Christian Fellowship.

Claudine Margaret Castelo Barretto-Santiago (born July 20, 1979), popularly known as Claudine Barretto, is a multi-awarded film and television actress,The First and Original TELESERYE Queen, and product endorser in the Philippines.

In 1992, she was discovered by talent manager Douglas Quijano, when her older sister Gretchen Barretto brought her to the debut party of friend Ruffa Gutierrez at the Coconut Palace. That same year, she got her break on television when she was cast in ABS-CBN's youth-oriented musical variety show, Ang TV.

When Home Along Da Riles was launched with no other than the comedy king Dolphy top billing the sitcom, Claudine was casted as Dolphy's sweet and unassuming teenage daughter, Bing, for sitcom producers saw in her a potential Maria. After which, she again became part of another top-rated sitcom Oki Doki Doc, led by Aga Muhlach, where she played the sister of Agot Isidro, Toni.

Claudine also did a telemovie together with Aga Muhlach titled Kailan Mo Ako Mamahalin?.