While spacetime can be viewed as a consequence of PERSON@1 's NUMBER@1 theory of special relativity , it was first explicitly proposed mathematically by one of his teachers , the mathematician PERSON@2 , in a NUMBER@2 essayHermann PERSON@3 , `` PERSON@4 und Zeit '' , NUMBER@3 .

PERSON@1 's NUMBER@1 theory of special relativity is the beginning of the concept of spacetime , but the first mathematical theory of spacetime was proposed by one of his teachers , the mathematician PERSON@2 , in a NUMBER@2 essay . PERSON@2 , `` PERSON@4 und Zeit '' , NUMBER@3 .
