Terms for subject Mathematics containing the Earlies

English	Russian
by the early 1980s	к началу 1980-х годов
by the early 20th century	к началу 20-го века
during the early work	при первоначальных исследованиях (with)
in the early part of the 20th century	в самом начале двадцатого века
in the early 1940s	в начале ... годов
in the early 1960s the size and types of problems were limited both by the capacity of early computers and by the lack of algorithm technology for their solving	ограничивались отсутствием алгоритмов их решения
in the early stages of	на первой стадии
in the early stages of	на начальной стадии
since the early 1960s several generalized theories of differentiation have been proposed by different authors	с начала
strain gauges started to be used in the mid 1950s to early 1960s	начинать
strain gauges started глагол только в прошедшем времени to be used in the mid 1950s to early 1960s	с середины ... годов до начала ... годов
the early 1980	в начале 1980-х годов
the early life of	начальный период существования
the early stages of	начальный период существования
this principle was first formulated in the early fifties of the 20th century	в начале ... годов