The paper analyzes the complexity of trust negotiation protocol, and its communication cost is linear, computing cost is o (n · K).

还分析了信任协商协议的复杂性，其通信开销为线性，计算开销为O (n·k)。

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It seeks to "generate the political leadership necessary" for a successful outcome at the U.N. climate change negotiation to be held in Copenhagen, Denmark, in December.

CNN: Obama invites major economies to energy forum

And we believe there needs to be a basis for negotiation and that actions through the U.N. do not create a basis for negotiation, but rather there needs to be a set of principles that the parties can come to the table around.

WHITEHOUSE: Aboard Air Force One, En Route New York, New York