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Mathematics
containing
positive number
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in specified order only
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positive whole number
натуральное число
strictly
positive number
строго положительное число
the first Betti number is a topological obstruction to the existence of metrics with positive or negative Ricci curvature
препятствие топологической природы к существованию
the inertia of a symmetric matrix is the triple whose elements are the number of positive, negative, and zero eigenvalues, counted with multiplicities
инерция матрицы
the number zero is neither positive nor negative
число ноль не является ни положительным, ни отрицательным
...
(i.e., it is both nonpositive and nonnegative)
the signature of a symmetric matrix is the difference between the number of positive eigenvalues and the number of negative eigenvalues
сигнатура матрицы
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