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

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Text this: Note on existence of nonnegative solutions to singular semi-positone problems