The New Encyclopędia Britannica: L-ZEncyclopędia Britannica, 1992 - 32 pages |
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Page 306
... problem is known as the word problem for groups ; a given presentation of a group is said to have a soluble word problem if there exists a method enabling one to decide for each pair of words in a finite number of steps whether or not ...
... problem is known as the word problem for groups ; a given presentation of a group is said to have a soluble word problem if there exists a method enabling one to decide for each pair of words in a finite number of steps whether or not ...
Page 473
... problem or an initial value problem , while that posed by equations ( 177 ) and ( 181 ) is called a two - point boundary value problem . Another kind of problem can be exemplified by refer- ence to equation ( 177 ) . It may be stated as ...
... problem or an initial value problem , while that posed by equations ( 177 ) and ( 181 ) is called a two - point boundary value problem . Another kind of problem can be exemplified by refer- ence to equation ( 177 ) . It may be stated as ...
Page 478
... problem . Two - point boundary value problems . The problem of finding a function y ( x ) in the interval a < x < b satisfy- ing a second - order differential equation F ( x , y , y ' , y ′′ ) = 0 and the conditions y ( a ) = yo , y ( b ) ...
... problem . Two - point boundary value problems . The problem of finding a function y ( x ) in the interval a < x < b satisfy- ing a second - order differential equation F ( x , y , y ' , y ′′ ) = 0 and the conditions y ( a ) = yo , y ( b ) ...
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20th century Abelian group addition aesthetic Afghanistan agriculture Albania alcohol algae algebra animals basin called central centre ceremonial climate coast common complex numbers Congo contains Cōte d'Ivoire countries crops cultivation culture dance defined desert developed drinking drug East eastern economic Egypt elements equations European example farm feet field Figure finite fish forest functor Igbo important Indians integers irrigation isomorphism Kabul Kenya Lake Lake Chad Lake Victoria land language lattice Lie algebra linear major mapping miles modern mountains Niger Nigeria Nile northern operations patterns percent period Plains plants Plateau polynomial population rainfall real numbers region ring ritual River Sahara savanna social soil South Africa southern Africa species subgroup Sudan Tanzania theory tion traditional tribes tropical United valley vector space vegetation village West Africa western x₁ Yoruba Zaire Zambia Zimbabwe