We provide a general definition of Toda brackets in a pointed model category, show how they serve as obstructions to rectification, and explain their relation to the classical stable operations.

中文翻译：

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关于Toda括号的注意事项

我们在指定的模型类别中提供Toda括号的一般定义，显示它们如何成为纠正的障碍，并解释它们与经典稳定操作的关系。