The fundamental group of \(X\) at \(x_0\) is \[\pi_1(X, x_0) \;:=\; \bigl\{[\gamma] \mid \gamma \text{ is a loop based at } x_0\bigr\}\] equipped with the group operation of concatenation: \[[\gamma] \cdot [\delta] := [\gamma * \delta], \qquad (\gamma * \delta)(s) := \begin{cases} \gamma(2s) & s \in [0,\tfrac{1}{2}] \\ \delta(2s-1) & s \in [\tfrac{1}{2},1] \end{cases}\] The identity element is the class of the constant loop \([c_{x_0}]\), and the inverse of \([\gamma]\) is \([\bar\gamma]\) where \(\bar\gamma(s) := \gamma(1-s)\).
[-]ESRogs12d20Are there any risks associated with the eggs being frozen for longer? Can you freeze an egg for 20 years?，更多细节参见新收录的资料
1989年由国家出面成立的封印先知集团，本意是“安顿两伊战争退伍老兵，利用武装部队的民事能力加快国家建设”，但随着时间推移，它变成了革命卫队与宗教基金会管理的“独立王国”，高管均为革命卫队任命，垄断利润丰厚的石油、矿山、工业和基建项目，还负责为政府拟定“反向制裁清单”，根据这份清单，只要国内制造商（主要是革命卫队附属公司）生产的商品，一律不得进口舶来品，也意味着该集团（或者说革命卫队）可垄断伊朗大部分商品进口。封印先知的经营活动只向革命卫队总部负责，其他机构无权监督或审计。。新收录的资料对此有专业解读
These heatmaps are analogous to functional MRIs of the Transformer, while it is thinking about maths of EQ problems.