Quasihomographies and quasi-symmetric function on the unit circle are geometric characterizations of boundary value of quasi-conformal mapping.

单位圆上的拟交比同胚和拟对称函数，都是拟共形映照边界值的一种几何表征。

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In this paper, a kind of boundary value problems of ordinary differential equations, in which the function solutions increase rapidly, are solved by means of compressed transformation.

本文用压缩变挟方法，求解了函数解随自变量增加而迅速增长的一类常微分方程的边值问题。

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By using the special test function, we discuss the establishing of conservation law of the first boundary value problem of infiltration.

运用取特殊检验函数的方法，建立了渗流方程第一边值问题解的守恒律。

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