298 Matching Annotations
  1. Dec 2022
  2. Nov 2022
  3. Oct 2022
  4. Aug 2022
  5. Jul 2022
    1. all j {\displaystyle j} , | α + 1 j − 1 | ≥ 1 − Re ⁡ α + 1 j ≥ 1 {\textstyle \left|{\frac {\alpha +1}{j}}-1\right|\geq 1-{\frac {\operatorname {Re} \alpha +1}{j}}\geq 1}

      why last >=1

  6. Jun 2022
    1. supremacy of M {\displaystyle M} and completes the proof.

      ? ~~应该是 f(s)~~

      ~~这句话表明 存在一个 supremum > f(s) 无限递归下去,f(s)=M~~

      supremacy indicate \(\forall \epsilon>0,\exist x,f(x)\le M - \epsilon\) so contradicts

    2. increases from f ( a ) {\displaystyle f(a)} to M {\displaystyle M} as x {\displaystyle x} increases from a {\displaystyle a} to b {\displaystyle b} .

      关键点

    3. then all points between a {\displaystyle a} and e {\displaystyle e} also belong to B {\displaystyle B} .

      通过 连续 的有限性性质

      不断迭代 证明 有界

  7. May 2022
    1. apply Fermat's stationary point theorem directly.)

      similar to above proof

      一般化了 不需要endpoint 都等于0 直接得出 闭区间 必有derivative equals zero的点

  8. Apr 2022
  9. Feb 2022
    1. <?xml version="1.0" encoding="UTF-8"?> <?xml-stylesheet ... <feed xmlns="http://www.w3.org/2005/Atom" xmlns:openSearch="http://a9.com/-/spec/opensearchrss/1.0/" xmlns:blogger="http://schemas.google.com/blogger/2008" xmlns:georss="http://www.georss.org/georss" xmlns:gd="http://schemas.google.com/g/2005" xmlns:thr="http://purl.org/syndication/thread/1.0" xmlns:feedburner="http://rssnamespace.org/feedburner/ext/1.0"> ...

      where

    1. when e n e w {\displaystyle e_{\mathrm {new} }} is greater than e {\displaystyle e} .

      即 允许 往上走

      而不是一直往下走,最后达到局部最优

    1. change in D will be: Δ D = f ( x 0 + 2 , y 0 + 3 2 ) − f ( x 0 + 1 , y 0 + 1 2 ) = A + B = Δ y − Δ x {\displaystyle {\begin{array}{lclcl}\Delta D&=&f(x_{0}+2,y_{0}+{\tfrac {3}{2}})-f(x_{0}+1,y_{0}+{\tfrac {1}{2}})&=&A+B&=&\Delta y-\Delta x\end{array}}}

      Pseudo-code algorithm

    1. where ⟨ e i , a i ⟩ = ‖ u i ‖ {\displaystyle \left\langle \mathbf {e} _{i},\mathbf {a} _{i}\right\rangle =\left\|\mathbf {u} _{i}\right\|}

      由上面投影的过程 可以推出

  10. Jan 2022
    1. find . -name .git -execdir bash -c 'echo -en "\033[1;31m"repo: "\033[1;34m"; basename "`git rev-parse --show-toplevel`"; git status -s' \;

      可以使用下面的代码 显示路径

      find . -name .git -execdir bash -c 'echo -en "\033[1;31m"repo: ""; echo -en "\033[1;35m $(pwd)" ; echo -en "\n\033[1;37m$(basename " $(git rev-parse --show-toplevel)")\n"; git status -s ' \;