Several fields of discrete mathematics, particularly theoretical computer science, graph theory, and combinatorics, are important in addressing the challenging bioinformatics problems associated with understanding the tree of life.

Several institutions, besides those already mentioned, played important parts.

Several billion kilograms of polyesters are produced industrially annually, important products being polyethylene terephthalate, acrylate esters, and cellulose acetate.

Several important cinematic movements, including the Nouvelle Vague, began in the country.

Several types are existent in Qing dynasty and used in dishes of stewing hams ( 火腿炖肘子 ), and vegetables, or for a wide variety of soup and important soup stocks.

Several important institutional changes took place in this period, such as free and mandatory schooling introduced 1842 ( as first country in the world ), the abolishment of a previous national monopoly on trade in handicrafts in 1846, and a stock company law in 1848.

His critically acclaimed book Lyrics on Several Occasions of 1959, an amalgam of autobiography and annotated anthology, is an important source for studying the art of the lyricist in the golden age of American popular song.

Several formerly important franchise courts were not officially abolished until Courts Act of 1971.

Several important buildings and structures were built during this time, including the Kansas City City Hall and the Jackson County Courthouse — both added new skyscrapers to the city's growing skyline.

Several industry groups also recognize light pollution as an important issue.

Several types of molecules are particularly important during morphogenesis.

Several of the more important ways observations can be affected by human psychology are given below.

Several other important engravers also made cards, including Master ES and Martin Schongauer.

Several economically important products come from Rosaceae, including many edible fruits ( such as apples, apricots, plums, cherries, peaches, pears, raspberries, and strawberries ), almonds, and ornamental trees and shrubs ( such as roses, meadowsweets, photinias, firethorns, rowans, and hawthorns ).

Several important political innovations of classical antiquity came from the Greek city-states and the Roman Republic.

Several Referendums supported the state being in control of the most important utilities and energy companies.

Several important modern cities, including Stockholm and Lviv, were founded in the 1250s.

Several important cultural achievements were made in the decade, including publication of Roger Bacon's important scientific work Opus Majus and Thomas Aquinas ' Summa contra Gentiles.

Several lakesthe most important of which are Lake Herăstrău, Lake Floreasca, Lake Tei, and Lake Colentinastretch across the northern parts of the city, along the Colentina River, a tributary of the Dâmbovița.

Several singular oak trees, such as the Royal Oak in Britain and the Charter Oak in the United States, are of great historical or cultural importance ; for a list of important oaks, see Individual oak trees.

Several important trade routes from India and China ( including the Silk Road ) passed through Bactria and, as early as the Bronze Age, this had allowed the accumulation of vast amounts of wealth by the mostly nomadic population.

Several of Gauthier's students are now important moral, political, and legal philosophers in the United States and Canada.

Several important features of visual perception can be traced to the retinal encoding and processing of light.

Several important diseases of the nervous system are associated with dysfunctions of the dopamine system.

Several medieval Georgian poets, including Shota Rustaveli, claimed Tamar as the inspiration for their works.

Several Roman poets, writing within ten years of the event, all mention bites by two asps, as does Florus, a historian, some 150 years later.

Several important concrete poets have also been significant sound poets, among them Henri Chopin, Ernst Jandl, and Bob Cobbing.

Several of its greatest poets were capable government officials as well including Ouyang Xiu ( 1007 – 1072 ), Su Shi ( 1037 – 1101 ), and Wang Anshi ( 1021 – 1086 ).

Several of his large instrumental works such as the Concerto for Orchestra or Symphony of Three Orchestras are inspired by twentieth-century poets as well.

Several poets, including Wilfred Owen, actually lodged in the rooms above the bookshop.

Several metaphysical poets, especially John Donne, were influenced by Neo-Platonism.

Several authors and poets have also written in Fering.

Several influential African poets became prominent in the 1970s such as Mongane Wally Serote, whose most famous work, No Baby Must Weep, gave insight into the every day lives of black South Africans under apartheid.

Several of the Cairo poets appeared in the ' Poets in Uniform ' issue of Tambimuttu's Poetry London early in 1941.

He was one of the so-called " Graveyard poets ": his ' A Night-Piece on Death ,' widely considered the first " Graveyard School " poem, was published posthumously in Poems on Several Occasions, collected and edited by Alexander Pope and is thought by some scholars to have been published in December of 1721 ( although dated in 1722 on its title page, the year accepted by The Concise Oxford Chronology of English Literature ; see 1721 in poetry, 1722 in poetry ).

Several poets of the period — Jean Antoine de Baïf ( who founded an " Académie de Poésie et Musique " in 1570 ), Blaise de Vigenère and others — attempted to adapt into French the Latin, Greek or Hebrew poetic meters ; these experiments were called " vers mesurés " and " prose mesuré " ( for more, see the article " musique mesurée ").

Several of the names do not appear in our copies of the poets ; unless this is the result of carelessness or ignorance, the compiler must have had access to sources no longer extant.

Several poets attempted to supply this void.

Several lyric and epigrammatic poets wrote in this dialect, such as Ibycus of Rhegium and Leonidas of Tarentum.

Several major poets, notably Georgy Ivanov and Vladimir Nabokov, passed the school of Gumilev, albeit informally.

Several poets of the period — Jean Antoine de Baïf ( who founded an " Académie de Poésie et de Musique " in 1570 ), Blaise de Vigenère and others — attempted to adapt into French the Latin, Greek or Hebrew poetic meters ; these experiments were called " vers mesurés " and " prose mesuré " ( for more, see the article " musique mesurée ").

Several of The Furnace's writers and a poetry editor have been a crucial part of Write Word Write Now, ( a cohort of Detroit's up and coming page poets ).

Several poets and authors went into exile after the Nazi occupation of Belarus, not to return until the 1960s.

Several specimens survive, and the art of composing them was popular, as might be expected from the court life of the poets and their constant endeavours after terseness and neatness of expression.