發送短信 : Tripled fixed points theorems for ø-contractive mixed monotone operators on partially ordered metric spaces

 _    _      ___      _____      ___      _____   
| \  / ||   / _ \\   /  ___||   / _ \\   /  ___|| 
|  \/  ||  | / \ || | // __    | / \ || | // __   
| .  . ||  | \_/ || | \\_\ ||  | \_/ || | \\_\ || 
|_|\/|_||   \___//   \____//    \___//   \____//  
`-`  `-`    `---`     `---`     `---`     `---`