A sufficient condition that the complementarity problem has solution is given in this paper, the proof of existence is constructive.
本文给出互补问题解的存在性的一个充分条件，其证明是构造性的。
This proof of existence, appearing in an upcoming issue of The Astrophysical Journal Letters, does nothing to reveal what dark matter really is, however.
暗物质存在的证明资料发表在即将出版的一期《天体物理学杂志通讯》上。然而，该资料并没有揭示暗物质到底是什么。
This proof of existence, appearing in an upcoming issue of The Astrophysical Journal Letters, does nothing to reveal what dark matter really is, however.
暗物质存在的证明资料发表在即将出版的一期《天体物理学杂志通讯》上。然而，该资料并没有揭示暗物质到底是什么。
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