Václav Hlavatý
Václav Hlavatý ( 27 January 1894 – 11 January 1969 ) was a noted Czech-American mathematician , who wrote on the theory of relativity and corresponded extensively with Albert Einstein on the subject . 
<triplet> Václav Hlavatý <subj> 27 January 1894 <obj> date of birth <subj> 11 January 1969 <obj> date of death <triplet> Albert Einstein <subj> theory of relativity <obj> notable work