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

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