發送短信 : Gradient flows : in metric spaces and in the space of probability measures

 _    _      ___      _____    __   __    ______  
| || | ||   / _ \\   / ____||  \ \\/ //  /_   _// 
| || | ||  | / \ || / //---`'   \ ` //   `-| |,-  
| \\_/ ||  | \_/ || \ \\___      | ||      | ||   
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