The New Encyclopædia Britannica: L-ZEncyclopædia Britannica, 1992 - 32 pages |
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Page 249
... origin of the red algae , they bear little resemblance to any other living group . The green algal classes are evolutionarily related , but their origin is unclear . Most consider the classes Micromon- adophyceae to be the most ancient ...
... origin of the red algae , they bear little resemblance to any other living group . The green algal classes are evolutionarily related , but their origin is unclear . Most consider the classes Micromon- adophyceae to be the most ancient ...
Page 480
... origin are used in this case . The property g ( 0 , t ) = 0 for a suitable range of t char- acterizes the origin as a critical point of ( 304 ) . It is as- sumed that this critical point is isolated and also that g is continuous and ...
... origin are used in this case . The property g ( 0 , t ) = 0 for a suitable range of t char- acterizes the origin as a critical point of ( 304 ) . It is as- sumed that this critical point is isolated and also that g is continuous and ...
Page 491
... origin . The origin is a steady state and an attractor . This means that a solu- tion at the origin stays at the origin for all time or that the vector field is zero at the origin ( steady state ) . That the origin is an attractor means ...
... origin . The origin is a steady state and an attractor . This means that a solu- tion at the origin stays at the origin for all time or that the vector field is zero at the origin ( steady state ) . That the origin is an attractor means ...
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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 Côte 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