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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 ?
The Raw Women's Championship is scheduled to be defended at Elimination Chamber.
It is what it is and now we just have to deal with San Sebastian,' said San Beda coach Boyet Fernandez, whose team swept the Stags in the elimination round.
This reinvestment from the Bill & Melinda Gates Foundation will enable UCSF and our partners to create an engineered future of rapid regional elimination to achieve a world free of malaria within a generation.
He expressed these views while addressing 9th meeting of steering committee set up for elimination of child labour from brick kilns Saturday.
The ultimate goal of an elimination diet is to permanently restrict as few foods as necessary.
On 20 December 1993 the General Assembly, by resolution 48/104, adopted the Declaration on the Elimination of Violence against Women.
At present, malaria incidence in all malaria-endemic districts, with the exception of Vhembe District in Limpopo, meet the elimination-stage threshold of the WHO elimination continuum (Table 1).
Projected economic costs of elimination are dominated by the management of imported malaria, but if elimination is stable, then it could save costs before achieving eradication.
We calculated the apparent elimination half-life in each individual for each dioxin congener and examined factors potentially influencing elimination rates and the impact of estimated ongoing background exposures on rate estimates.
The researchers found that 34% of the employers in their sample had a 180-day LTD elimination period and 63% had a 90-day LTD elimination period.
From the date Russia (in this example) has decreased to the US level and the US then joins with Russia in parallel further reductions, the other nuclear weapon states commence a 90-day period of dismantling 25 percent of their warheads; but thereafter the latter states can "wait" until Russia and the US, reducing in tandem and following the elimination timetable, reduce to the other states' varying (25 percent-reduced) levels, at which successive points those states join the US and Russia in the final phases, on a month-by-month and then week-by-week basis, of the progress to zero.
Coral Next elimination bets on Frankie refunded, all other bets stand.