在资产收益服从标准t分布假设下,主要用数值计算方法证明了,当置信水平α〉0.5时,VaR满足次可加性,并用计算机模拟检验了所得结果的正确性.
Let profit distribution conform to standard Student-t Distribution,We prove that VaR is sub-additive when the confidence levelα0.5 mainly by numerical computation method.Then,the simulation results confirm it highly.