Subtraction
61SISCOM — subtraction ictal single proton emission computed tomography coregistered to magnetic resonance imaging [MRI] …
62твердые растворы вычитания — [subtraction solid solutions] твердые растворы, образованные на базе химических соединений (например, интерметаллидов), в структуре которых имеются узлы кристаллической решетки, не занятые атомами одного из компонентов, т.е. образуются вакансии.… …
63SISCOM — • subtraction ictal single proton emission computed tomography coregistered to magnetic resonance imaging [MRI] …
64Arithmetic — tables for children, Lausanne, 1835 Arithmetic or arithmetics (from the Greek word ἀριθμός, arithmos “number”) is the oldest and most elementary branch of mathematics, used b …
65Addition — is the mathematical process of putting things together. The plus sign + means that two numbers are added together. For example, in the picture on the right, there are 3 + 2 apples meaning three apples and two other apples which is the same as… …
66Slide rule — For other uses, see Slide rule (disambiguation). A typical ten inch student slide rule (Pickett N902 T simplex trig). The slide rule, also known colloquially as a slipstick,[1] is a mechanical analog computer. The slide rule is used primarily for …
67Plus and minus signs — This article is about the mathematical symbols. For other uses of plus , see Plus (disambiguation). For other uses of minus , see Minus (disambiguation). The plus and minus signs (+ and −) are mathematical symbols used to represent the notions of …
68Swami Bharati Krishna Tirtha's Vedic mathematics — For the actual mathematics of the Vedic period, see the articles on Sulba Sūtras and Indian mathematics.Swami Bharati Krishna Tirtha s Vedic mathematics is a system of mathematics consisting of a list of 16 basic sūtras, or aphorisms. They were… …
69Negative number — This thermometer is indicating a slightly negative …
70Mechanical calculator — An old Russian mechanical calculator. A mechanical calculator is a device used to perform the basic operations of arithmetic. Mechanical calculators are comparable in size to small desktop computers and have been rendered obsolete by the advent… …
