Aleksandr Danilovich Aleksandrov
Aleksandr Danilovich Aleksandrov ( , alternative transliterations: "Alexandr" or "Alexander" ( first name ) , and "Alexandrov" ( last name ) ) ( August 4 , 1912 – July 27 , 1999 ) , was a Soviet/Russian mathematician , physicist , philosopher and mountaineer . 
<triplet> Aleksandr Danilovich Aleksandrov <subj> August 4, 1912 <obj> date of birth <subj> July 27, 1999 <obj> date of death