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“fundamental”
(mathematics is the deductive study of quantities, magnitudes, and shapes as determined by the use of numbers and symbols while every branch of science and engineering depends on mathematics; measurement is the process of associating numbers with physical quantities and phenomena and measurement is fundamental to the sciences; to engineering, construction, and other technical fields; and to almost all everyday activities)
(a science that attempts to discover the fundamental principles of the sciences, the arts, and the world that the sciences and arts influence)