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 _    _    _    _    _    _    _    _    _    _   
| |  | || | || | || | |  | || | || | || | \  / || 
| |/\| || | || | || | |/\| || | || | || |  \/  || 
|  /\  || | \\_/ || |  /\  || | \\_/ || | .  . || 
|_// \_||  \____//  |_// \_||  \____//  |_|\/|_|| 
`-`   `-`   `---`   `-`   `-`   `---`   `-`  `-`

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發送短信 : The fractional heat equation