actor0 edited div_nbsp_br_div__.html  about 8 years ago

Commit id: 9b29cb2d17f07aedc5f313587483a9f922aa4c79

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a \Leftrightarrow 2\pi a\sum\limits_{k = - \infty }^\infty

{\delta (\omega + 2\pi k)} ,( - \infty < n < \infty )