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When no confusion is possible, notation f(S) is commonly used. 1. Closed interval : if a and b are real numbers such that a ≤ b {\displaystyle a\leq b} , then [ a , b ] {\displaystyle [a,b]} denotes the closed interval defined by them.
In contexts where there is no confusion, a 1 × 1 matrix can be treated as a scalar. A matrix or tuple consisting of all zeros is simply denoted by 0 with the dimension inferred from the context. For a matrix A, A T denotes the transpose of A. For an n -tuple x , x T denotes the transpose of x.
Mar 2, 2018 · Where implicit multiplication is appropriate, in algebraic expressions, between a number and a symbol, or between two symbols, neither :: not ÷ ÷ should be used to express division. Rather division should be shown using a horizontal line. This means there is no confusion possible between. a b(c + d) a b (c + d) and.
The notation ∥ ⋅ ∥ will also be used to denote the norm of R N. No confusion is possible since it will always be clear from the context which norm is used.
Apr 19, 2023 · The original notation, using the square root symbol for imaginary numbers, led to misunderstanding and confusion in mathematics. For example, people might think that $\sqrt{-1}\cdot\sqrt{-1} = \sqrt{-1\cdot{-1}} = \sqrt1$ , which is clearly incorrect when working with imaginary numbers.
As a rule of thumb I use type-writer font for quantifier expressions and italics for the signified quantifiers. In logical languages, on the other hand, it is convenient to abuse notation somewhat by using the same symbol for both the expression and the quantifier, when no confusion results.
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The notation ∥ ⋅ ∥ will also be used to denote the norm of R N. No confusion is possible since it will always be clear from the context which norm is used.
