Warning: file_put_contents(/www/wwwroot/ppbbu/qk12333.com/cache/d5a133b9081832c8f4093e7558939c5d.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/qk12333.com/index.php on line 55 mapping norm例句_mapping norm英汉例句_mapping norm双解例句_奇客生活牛津词典
By introducing weighted norm and using the Banach contraction mapping principle we obtain the existence of throughout positive solutions for the above equations. 通过引进加权范数及利用巴拿赫压缩映射原理,得到上面这两种方程始终正解的存在性。