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Nov 18 at 6:34 audit Suggested edits
Nov 18 at 6:34
Nov 6 at 20:12 history edited RobPratt
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Nov 6 at 19:33 comment added Ray @LidingYao $\varphi_j$ is a sequence of smooth, compactly supported functions such that $\int_{\mathbb{R}^n}\varphi_jdx=1$ for each $j$ and whose support lies in $\overline{B(c,\frac{1}{j})}$ for each $j$.
Nov 6 at 19:02 comment added Liding Yao What is your $\varphi_j$ stands for.
Nov 6 at 17:09 history edited Ray CC BY-SA 4.0
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Nov 6 at 16:40 history asked Ray CC BY-SA 4.0