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Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
在这个世界上,你无法选择是否受伤,但你可以选择由谁来伤害你。
我一直想成为某个人。如果我成功了,那有一半是运气,一半是才华,还有大量的努力。
For systems, the analogue of a face-lift is to add to the control graph an edge that creates a cycle, not just an additional node.