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

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發送短信 : Best proximity points of α-β-ψ-proximal contractive mappings in complete metric spaces endowed with graphs