Terms for subject Mathematics containing theory in practice

English	Russian
we must greatly extend the original concept of number as natural number in order to create an instrument powerful enough for the needs of practice and theory	первоначальная концепция
we must greatly extend the original concept of number as natural number in order to create an instrument powerful enough for the needs of practice and theory	создать инструмент, достаточно мощный для практических и теоретических целей
we must greatly extend the original concept of number as natural number in order to create an instrument powerful enough for the needs of practice and theory	мы должны сильно расширить первоначальное понятие числа как натурального числа, для того чтобы