difference bounded sequences 差分有界序列
For a general case of three dimensional bounded region, we put forward a kind of fractional step characteristic difference schemes.
在考虑三维有界区域的一般情况下，提出了一类分数步长特征差分格式。
By discussing a class of the neutral difference equation with several delay arguments, the author deduces a necessary and sufficient condition for the existence of bounded positive solutions.
考虑一类含有多个滞量的中立型差分方程，获得了该方程存在有界正解的一个充分必要条件。
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