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2. Rounding - Wikipedia

   en.wikipedia.org/wiki/Rounding

   This problem is known as "the table-maker's dilemma". Rounding has many similarities to the quantization that occurs when physical quantities must be encoded by numbers or digital signals. A wavy equals sign (≈, approximately equal to) is sometimes used to indicate rounding of exact numbers, e.g. 9.98 ≈ 10.

3. Mathematical table - Wikipedia

   en.wikipedia.org/wiki/Mathematical_table

   Mathematical tables are lists of numbers showing the results of a calculation with varying arguments.Trigonometric tables were used in ancient Greece and India for applications to astronomy and celestial navigation, and continued to be widely used until electronic calculators became cheap and plentiful in the 1970s, in order to simplify and drastically speed up computation.

4. Cayley table - Wikipedia

   en.wikipedia.org/wiki/Cayley_table

   Named after the 19th century British mathematician Arthur Cayley, a Cayley table describes the structure of a finite group by arranging all the possible products of all the group's elements in a square table reminiscent of an addition or multiplication table. Many properties of a group – such as whether or not it is abelian, which elements ...

5. Glossary of mathematical symbols - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_mathematical...

   Glossary of mathematical symbols. A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various ...

6. Dyscalculia: Symptoms and Treatment of This Math Learning ...

   www.webmd.com/add-adhd/childhood-adhd/...

   A child with dyscalculia also may have a lot of anxiety about numbers. For example, they may panic at the thought of math homework. School-aged kids with dyscalculia may find it hard to ...

7. Generator (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Generator_(mathematics)

   Generator (mathematics) The 5th roots of unity in the complex plane under multiplication form a group of order 5. Each non-identity element by itself is a generator for the whole group. In mathematics and physics, the term generator or generating set may refer to any of a number of related concepts. The underlying concept in each case is that ...