- Difference between ≈, ≃, and ≅ - Mathematics Stack Exchange
In mathematical notation, what are the usage differences between the various approximately-equal signs "≈", "≃", and "≅"? The Unicode standard lists all of them inside the Mathematical Operators B
- What does versus mean in the context of a graph?
I would agree with the rule " [dependent] versus [independent] " The word "versus" can mean "compared with," and it more frequently makes sense to compare a dependent value with its associated independent value, because well, the independent variable doesn't really "care" about the existence of the dependent variable, but the converse relationship is by definition
- What is the meaning of $\exp (\,\cdot\,)$? - Mathematics Stack Exchange
What is the meaning of $\exp (\,\cdot\,)$? Ask Question Asked 13 years, 7 months ago Modified 2 years, 7 months ago
- Can someone clearly explain about the lim sup and lim inf?
Can some explain the lim sup and lim inf? In my text book the definition of these two is this Let (sn) (s n) be a sequence in R R We define
- What does the dot product of two vectors represent?
I know how to calculate the dot product of two vectors alright However, it is not clear to me what, exactly, does the dot product represent The product of two numbers, $2$ and $3$, we say that i
- inequality - Meaning of $\geqslant$, $\leqslant$, $\eqslantgtr . . .
What do slanted inequality signs mean? Specifically, these are $\\geqslant$, $\\leqslant$; and the variation: $\\eqslantgtr$, $\\eqslantless$ Is there any place I can look this up? I've searched Wik
- integration - What is the meaning of $dA$ in double integrals . . .
What is the meaning of $dA$ in $\iint_E\dots dA$, where $E$ is a region in the $xy$ plane? In some integrals we use $dA=dx\,dy$, but in others $dA=\hat {k}\,dx\,dy$
- What is the meaning of $\mathbb R^+$? - Mathematics Stack Exchange
$\mathbb R^+$ commonly denotes the set of positive real numbers, that is: $$\mathbb R^+ = \ {x\in\mathbb R\mid x>0\}$$ It is also denoted by $\mathbb R^ {>0},\mathbb R_+$ and so on For $\mathbb N$ and $\mathbb N^+$ the difference is similar, however it may be non-existent if you define $0\notin\mathbb N$ In many set theory books $0$ is a natural number, while in analysis it is often not
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