In unconstrained optimization , we deal with the standard problem of finding the minimum of a function f : rn - r . if we assume that the function is twice continuously differentiable , many methods can be applied to find the minimum 在无约束最优化中,考虑寻找f : r ~ n r的极小点。假设f是二次连续可微的,可以有许多方法寻找它的极小点。
In order to achieve a computer code with a maximum degree of vectorization , the numerical flux function must be written uniformly with sign function . to get higher order accuracy , the muscl interpolation functions are applied for van leer and roe schemes Vanleer和roe格式摘要( abstraet )均采用muscl插值使格式具有高阶精度,并采用连续可微的vanalbada通量限制器,使格式具有良好的稳定性和收敛特性。
We discuss the continuity of the mapping defined by = and also of the inverse mapping v - l . particularly , we will show that the teichmuller co - metric on the teichmuller space is nowhere c1 whenever x is of infinite type , which contains a negative answer to a problem of gardiner ( [ ga ] , p 特别地,我们证明了当x是无限型曲面时, teichm ller空间t ( x )的teichm ller协度量是处处不连续可微的,因而否定地回答了gardiner的一个问题(见[ ga ] , p
We extend this result which is similar to ones of hirsch [ 1l ] and jiang [ 2 ] for 3 - dimensional cooperative system . furthermore , in the paper we discusse the cone of km , and obtain the similar result : theorem b : let f be a continuously differentiable cooperative vector field on d , suppose the following conditions hold : ( a ) d is pm - convex ; ( b ) every forward semi - orbit has compact closure in d ; ( c ) there is not more than one equilibrium p , then there is a unique equilibrium p and it is globally asymptotically stable 此外,本文还将在k _ m锥下讨论此问题,并得到平行的结果:定理b :设f是d上一个连续可微的合作向量场,假设如下条件成立: ( a ) d是p _ m凸的; ( b ) d中的每一个正半轨道有紧闭包; ( c )至多有一个平衡点p ,则一定存在唯一的平衡点p ,并且是全局渐近稳定的。
连续: 6年未出事故. There have been no a ...可: approve微: minute; tiny; light; slight的: 4次方是 The fourth power of 2 i ...次连续可微的: times continuously differentiablen次连续可微的: n times continuously differentiable连续可微性: continuous differentiability双连续可微: bicontinuously differentiable二次连续可微: twice continuously differentiable连续可微函数: continuously differentiable function; continuously-differentiable functionn次连续可微函数: n times continuously differentiable function次连续可微函数: times continuously differentiable function连续可微分函数: continuously differentiable function可微的: derivable; differenzierbar differentiable分段连续可微分函数: piecewise continuous differentiable function无限次连续可微函数: infinitely continuously derivable function不可微的: non differentiable右方可微的: right hand differentiable; right side differentiable逐项可微的: termwise differentiable从下面可微的: linksseitig differenzierbar differentiable from below; differentiable from the left连续可变: continuously variable连续可调的: continuously adjustable连续可变传动: cvt continuously variable transmission连续可变调整: continuously variable control; continuously-variable control连续可变放大: continuously variable maginification