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100 _a20140217a1998 k y0engy50 ba
101 0 _aeng
102 _aUS
135 _adrnn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aThe geometry of the Fisher selection dynamics
_fA. V. Shapovalov, E. V. Evdokimov
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 13 tit.]
330 _aWe study the Fisher model describing natural selection in a population with a diploid structure of a genome by differential- geometric methods. For the selection dynamics we introduce an affine connection which is shown to be the projectively Euclidean and the equiaffine one. The selection dynamics is reformulated similar to the motion of an effective particle moving along the geodesic lines in an 'effective external field' of a tensor type. An exact solution is found to the Fisher equations for the special case of fitness matrix associated to the effect of chromosomal imprinting of mammals. Biological sense of the differential- geometric constructions is discussed. The affine curvature is considered as a direct consequence of an allele coupling in the system. This curving of the selection dynamics geometry is related to an inhomogenity of the time flow in the course of the selection
463 _tArxiv.org
_vPhysics
_d1998
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
700 1 _aShapovalov
_bA. V.
_cmathematician
_cProfessor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences
_f1949-
_gAleksandr Vasilyevich
_2stltpush
_3(RuTPU)RU\TPU\pers\31734
701 1 _aEvdokimov
_bE. V.
801 2 _aRU
_b63413507
_c20180306
_gRCR
856 4 _uhttp://arxiv.org/abs/physics/9805006
942 _cCF