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

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Text this: Số Topo bán nguyên trong mô hình Skyrmion