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- In mathematics, the equal sign can be used as a simple statement of fact in a specific case (" x = 2 "), or to create definitions (" let x = 2 "), conditional statements (" if x = 2, then... "), or to express a universal equivalence (" (x + 1)2 = x2 + 2x + 1 ").
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What symbols are used for 'is defined to be equal to'?
Mar 18, 2011 · Basically, some people think that there should be notational difference between saying "I define blah to be equal to blankety" and saying "blah is equal to blankety". So they use := for the first and = for the latter.
$$:=$$ is the commonest symbol to denote "is equal by definition." Note that $$\equiv$$ is used to denote an algebraic identity: this means that the equation is true for all permitted values of its variables.
Dec 10, 2020 · So what does “all right angles are equal” mean? It means: Suppose you have made a bunch of right angles. That is to say, you have drawn various lines and then cut the space on one side in half.
In mathematics, the equal sign can be used as a simple statement of fact in a specific case (" x = 2 "), or to create definitions (" let x = 2 "), conditional statements (" if x = 2, then ... "), or to express a universal equivalence (" (x + 1)2 = x2 + 2x + 1 ").
A collection of mathematical words and their meanings. It may be useful to print these off and use them as a revision aid. Make sure you understand them all before your exam! A glossary of key mathematical words and their definitions.
The list below has some of the most common symbols in mathematics. However, these symbols can have other meanings in different contexts other than math.
List of all math symbols and meaning - equality, inequality, parentheses, plus, minus, times, division, power, square root, percent, per mille,...
