00401nam a2200145Ia 450000500170000000800410001702000180005804100120007608200160008810000180010424500420012226000460016430000200021065000250023020260429111945.0260429s9999||||xx |||||||||||||| ||und||  a9788184116311  aEnglish  a530.15bKUM  aKumar, Sanjay 0aMathematical physics / cSanjay Kumar  aNew Delhi : bSonali Publications,c2025.  avii, 312 p.; hb  aMathematical physics