Title: Unsolved Problems in Special and General Relativity Author: Florentin Smarandache Creator: Appligent pdfHarmony 2.0 Producer: Prince 12.5 (www.princexml.com) CreationDate: Mon Dec 2 11:26:42 2019 ModDate: Mon Dec 2 11:26:42 2019 Tagged: yes Form: none Pages: 320 Encrypted: no Page size: 612 x 792 pts (letter) (rotated 0 degrees) File size: 3952924 bytes Optimized: yes PDF version: 1.7