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  _  __     ___     _    _      ___      ______  
 | |/ //   / _ \\  | |  | ||   / _ \\   /_   _// 
 | ' //   | / \ || | |/\| ||  | / \ ||  `-| |,-  
 | . \\   | \_/ || |  /\  ||  | \_/ ||    | ||   
 |_|\_\\   \___//  |_// \_||   \___//     |_||   
 `-` --`   `---`   `-`   `-`   `---`      `-`'

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發送短信 : The fractional heat equation