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A process of deriving from a system of equations a new system with fewer variables, but with precisely the same solutions.



the death of nonadapted individuals in the course of the struggle for life. Elimination may be nonselective (general) or selective.

Nonselective elimination occurs as a result of environmental factors that exceed the adaptive capabilities of a given group of individuals (that is, a particular population or species). Among such factors, the most common are natural disasters and the catastrophic effects of human intervention, such as floods, droughts, and changes in the landscape (for example, as a result of urbanization). Large-scale elimination may lead to the extinction of an entire species.

Selective elimination, or the death of part of a population, is caused by some individuals’ lower relative capacity for adaptation (as in the case of the spontaneous thinning out of a forest). Selective elimination is a major factor in evolution, since differential rates of survival result in the multiplication of the better-adapted individuals—that is, natural selection.


Shmal’gauzen, I. I. Problemy darvinizma, 2nd ed. Leningrad, 1969.
References in periodicals archive ?
An hour and a half of highlights from the completion of eliminations for seventh annual Pep Boys NHRA Carolina Nationals, as well as qualifying for the 29th annual AAA Texas NHRA FallNationals will be broadcast on ESPN2 on Sunday, Sept.
I AM amazed that Rodney Masters' article (February 26) on the possible elimination of Cappa Bleu from the Cheltenham Foxhunter Chase did not arouse much more comment, as there are some very serious principles at stake.
Currently airing three times a week, ``Idol'' returns to twice-weekly shows for the elimination of the final dozen.
This article discusses common problems and solutions that can improve root cause problem elimination.
In [18] it was shown that vertex and edge eliminations can be interpreted as groups of face eliminations and that face elimination sequences can undercut the number of multiplications of an optimal vertex or edge elimination sequence.
43 allows the company to "accomplish, in its books of account, substantially what might be accomplished in a reorganization by legal proceedings--that is, elimination of a deficit in retained earnings and establishment of a new basis of accounting for its assets and liabilities.
3 million of capital funding to cover the cost of operation of the 27 routes preserved from the original list of eliminations and reductions.
Following consultation with trainers, the BHB has amended the procedures for the elimination and balloting of horses in banded stakes so that, where eliminations are necessary, horses who have finished first, second or third now have a measure of protection.
Included in the corporation's strategic and business plan are revenue increases, overhead elimination, productivity improvements, and route and service adjustments.
com's Ultimate Blackjack Tour's (UBT) Elimination Blackjack and poker tournaments online.
It took me about 10 minutes to get over it,'' said Pedregon, who failed to qualify for Sunday's top-16 eliminations.
Mr Lavec, who had the nine hole in the eliminations, will have the seven hole in the finals.