Terms for subject Mathematics containing it's not, it's

English	Russian
a diagonally dominant dominant-like matrix is one for which it is known a priori that без артикля pivoting for stability is not required	выбор ведущего элемента
for deactivation not to occur before decomposition, it is necessary that the pressure be low	для того чтобы ... не
it is not difficult to show, however, that our result can be applied to any two points, no matter what the algebraic signs of their coordinates are	каковы бы ни
it is not possible to extend Abel's theorem to paths which are tangent to the unit circle	теорему Абеля невозможно распространить на случай путей, касательных к единичной окружности
it is not the rule in mechanics but the exclusion	не правило, а исключение
it was not until 1970 that	только в 1970 г
it was not until 10 years later that	только через 10 лет
the disadvantage of this method is that it does not average the strain over the whole section of the bar	усреднять по