TY - JOUR A2 - Shahzad, Naseer AU - Fu, Xiaohong PY - 2014 DA - 2014/10/21 TI - On Isometric Extension in the Space SP - 678407 VL - 2014 AB - We study the problem of isometric extension on a sphere of the space sn(H). We give an affirmative answer to Tingley’s problem in the space sn(H). SN - 2314-8896 UR - https://doi.org/10.1155/2014/678407 DO - 10.1155/2014/678407 JF - Journal of Function Spaces PB - Hindawi Publishing Corporation KW - ER -