无穷逻辑
无穷逻辑是数理逻辑的一个分支,它允许公式和证明具有无限长度,从而扩展了传统一阶逻辑的表达能力。与标准逻辑不同,无穷逻辑允许无限长的合取、析取以及量词序列,使其能够处理一般有限逻辑无法表达的数学结构。这一领域在模型论、集合论和递归论中具有重要应用,尤其常用于描述某些不可数结构或解决涉及无限组合性质的问题。
无穷逻辑是数理逻辑的一个分支,它允许公式和证明具有无限长度,从而扩展了传统一阶逻辑的表达能力。与标准逻辑不同,无穷逻辑允许无限长的合取、析取以及量词序列,使其能够处理一般有限逻辑无法表达的数学结构。这一领域在模型论、集合论和递归论中具有重要应用,尤其常用于描述某些不可数结构或解决涉及无限组合性质的问题。
The article argues that to function normally, people must accept contradictory realities: that climate change is catastrophic but also that society treats mitigation as economically unviable. It explores the psychological dissonance required to live in a world facing existential threats while continuing daily life without urgent action.
Emotional regulation—the capacity to feel strongly without losing composure—is increasingly rare. Past norms expected adults to handle disagreements and bad news with restraint, but today raw emotional expression often replaces that discipline.