【摘要】 本文首先以人口的演化规律出发建立了胎次妇女比的动态方程,给出了该方程在古典意义下的解,并利用算子半群理论证明了该方程在L²[a₁,a₂]中的解的存在唯一性。更多还原

【Abstract】 Based on the law of the development of population, we build the population dynamic equations on parity and give the solutions of the equations. By using the theory of semigroups, we prove there is one and only one solution of the equations in L2[a1,a2].更多还原