Several variants of democracy exist, but there are two basic forms, both of which concern how the whole body of citizens executes its will.

Several groups developed operating systems for the architecture, including Microsoft Windows, Linux, and UNIX variants such as HP-UX, Solaris,

Several libertarian socialists, notably Noam Chomsky, believe that anarchism shares much in common with certain variants of Marxism such as the council communism of Marxist Anton Pannekoek.

Several variants of Mozzarella cheese have been developed for use as pizza cheese.

Several variants of the oath have been used since 1789 ; the current form, which is also recited by Senators, Representatives and other government officers, has been used since 1884:

Several DIP variants for ICs exist, mostly distinguished by packaging material:

Several different variants of the " Cinderella " story, which has its origins in the Egyptian story of Rhodopis, appear in the One Thousand and One Nights, including " The Second Shaykh's Story ", " The Eldest Lady's Tale " and " Abdallah ibn Fadil and His Brothers ", all dealing with the theme of a younger sibling harassed by two jealous elders.

Several variants of the pressure cooker exist.

Several variants of the double pendulum may be considered ; the two limbs may be of equal or unequal lengths and masses, they may be simple pendulums or compound pendulums ( also called complex pendulums ) and the motion may be in three dimensions or restricted to the vertical plane.

Several other types of theologically motivated variants are found in the Samaritan Pentateuch.

Several states of India have banned the sale, manufacture, distribution and storage of gutka and all its variants.

Several different variants of the story appear in the medieval One Thousand and One Nights, also known as the Arabian Nights, including " The Second Shaykh's Story ", " The Eldest Lady's Tale " and " Abdallah ibn Fadil and His Brothers ", all dealing with the theme of a younger sibling harassed by two jealous elders.

Several states and provinces bearing the name of Pontus or variants thereof were established in the region in Hellenistic, Roman and Byzantine times.

Several variants are known ; Fauna is daughter, wife or sister of Faunus ( also named Faunus Fatuus, meaning Faunus " the foolish ", or seer ).

Several other variants were produced through the 1820s and were employed in military bands.

Several variants exist of his name: Ysaac, Ysaak, Henricus, Arrigo d ' Ugo, and Arrigo il Tedesco among them.

Several forms of Gauri Raga exist historically and this probably accounts for the large number of variants: Gauri Cheti, Gauri Bairagan, Gauri Dipaki, Gauri Purbi-Dipaki, Gauri Guareri, Gauri-Majh, Gauri Malava, Gauri Mala, Gauri Sorath, Gauri Dakhani.

Several routes in the past concurrently used the Orient Express name, or slight variants thereof.

Several variants of backtracking exists.

Several variants and forms are known per species.

Several limited-edition variants of Mars bars have been released in various countries.

Several variants of the game were released, with similar gameplay but different graphics and music.

Several variants of Zen's practice and experiential wisdom ( 禅宗 ) were separately brought to Japan.

Several variants were also studied.

Several lines of printers, such as the Printronix P7000 cartridge series of line matrix printers are ENERGY STAR ® qualified and provide 40 percent operational energy savings compared to laser printers.

Several authors have therefore proposed algorithms which exploit the structure of the Vandermonde matrix to compute numerically stable solutions in operations instead of the required by Gaussian elimination.

Several methods are commonly used to convert a general matrix into a Hessenberg matrix with the same eigenvalues.

Several extracellular matrix proteins are enriched at nodes of Ranvier, including tenascin-R, Bral-1, and proteoglycan NG2, as well as phosphacan and versican V2.

Several leptospiral outer membrane proteins have been shown to attach to the host extracellular matrix and to factor H. These proteins may be important for adhesion of Leptospira to host tissues and in resisting complement, respectively.

Several years of her life have been spent in the homeland, and she had written to friends to alert them of our coming.

Several conventions have been held in recent months in hotels on a nonsegregated basis.

Several dentists and patients with special dental problems have experimented with the device.

Several germanium resistors have been thermally cycled from 300 to 4.2 Af and their resistances have been found to be reproducible within 1/3 millidegree when temperatures were derived from a vapor pressure thermometer whose tubing is jacketed through most of the liquid helium.

Several financial institutions, both banks and insurance companies, have been sounded out.

Several days after the companies had received the questionnaire, members of the research team contacted the presidents of eleven of these companies in person or by phone to discuss any ambiguities or difficulties the addressees might have experienced in completing the questionnaire.

Several signers affixed their names, it was learned, after being told that no tax increase would be possible without consent of the General Assembly and that a provision could be included in the charter to have the town take over the Johnston Sanitary District sewer system.

( Several times recently I have wondered whether shows were being staged for the sake of the script or just to entertain the audience with the spectacle of scenery being shifted right in front of their eyes.

Several of these double entries have been collected by Ben Bagley and Michael McWhinney, along with Rodgers and Hart songs that disappeared permanently en route to New York and others that reached Broadway but have not become part of the constantly heard Rodgers and Hart repertory, in a delightfully refreshing album, Rodgers And Hart Revisited ( Spruce Records, 505 Fifth Avenue, New York ).

Several robot cities have been planned for the country: the first will be built in 2009 at a cost of 500 billion won, of which 50 billion is direct government investment.

Several of the dialects have been influenced by contact with non-Germanic linguistic groups, such as the dialect of Carinthia, where in the past many speakers were bilingual with Slovene, and the dialect of Vienna, which has been influenced by immigration during the Austro-Hungarian period, particularly from what is today the Czech Republic.

Several AFI Alums have received both national and international recognition.

Several unusual applications, such as a nuclear battery or fuel for space ships with nuclear propulsion, have been proposed for the isotope < sup > 242m </ sup > Am, but they are as yet hindered by the scarcity and high price of this nuclear isomer.

Several biographical programs have been made, such as the 2004 BBC television programme entitled Agatha Christie: A Life in Pictures, in which she is portrayed by Olivia Williams, Anna Massey, and Bonnie Wright.

Several additional candidates for written ASL have appeared in over the years, including Sutton SignWriting, Sign Script, ASL-phabet, and Si5s.

Several genres of fiction have been confused as alternate histories.

Several volcanoes on offshore islands have records of historic activity.

Several of Ambrose's works have recently been published in the bilingual Latin-German Fontes Christiani series ( currently edited by Brepols ).

Several religious brotherhoods which have sprung up in and around Milan at various times since the 14th century have been called Ambrosians.

Several saints and six popes have borne this name, including the only English pope, Adrian IV, and the only Dutch pope, Adrian VI.

Several alternatives to the human sacrifice have been presented in Greek mythology.

Several other princes have borne the name Alexander: