x~a, x ≈b, x ≃c, x ≅d. Who is greater? a, b, c or d?
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Answer:
The following is a list of mathematical symbols used in all branches of mathematics to express a formula or to represent a constant.
A mathematical concept is independent of the symbol chosen to represent it. For many of the symbols below, the symbol is usually synonymous with its corresponding concept[1], but in some situations, a different convention may be used. For example, depending on context, the triple bar "≡" may represent congruence or a definition. However, in mathematical logic, numerical equality is sometimes represented by "≡" instead of "=", with the latter representing equality of well-formed formulas. In short, convention dictates the meaning.
Each symbol is shown both in HTML, whose display depends on the browser's access to an appropriate font installed on the particular device, and typeset as an image via TeX
a,b,c or d are greater than the first is smaller