Notations
- Page ID
- 10825
This page is a draft and is under active development.
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| \( \bot \) | is perpendicular to |
| \( \emptyset \) | The empty set - a set containing no elements |
| \( < \) | is less than |
| \( > \) | is greater than |
| \( \geq \) | is greater than or equal to |
| \( \leq \) | is less than or equal to |
| \( ! \) | Fractorial |
| \( \rightarrow \) | which implies that |
| \( \leftrightarrow \) | if and only if |
| \( f(x) \) | A function or relation in the variable \( x \) |
| \( (a,b) \) |
An ordered pair. This notation can be used in the context of sets describing, the set consisting of all real numbers which lies between \( a \) and \( b \) whenever \( a \) and \( b \) are real numbers. This notation may also be used to denote the coordinates of a point in two dimensions. |
| \( \in \) | is an element of |
| \( \notin \) | is not an element of |
| \( \subseteq \) | is a subset of |
| \( \subset \) | is a proper subset of |
| \( \cup \) | Union |
| \( \cap \) | Intersection |
| \( |a| \) | The absolute value of \( a \) |
| \( \neq \) | is not equal to |
| acute angle | An angle which has measure between \( 0^\circ \) and \( 90^\circ \). |
| obtuse angle | An angle which has measure between \( 90^\circ \) and \( 180^\circ \). |
| hypotenuse | The side in a right angle which is opposite to the right angle. |
| \( \overline{AB} \) | The length of the line segment \( AB \) |
| \( \approx \) | is approximately equal to |
| \( \sim \) | is equivalent to |
| \( \ln(x) \) | Natural logarithm of \( x \). The logarithm of \( x \) to the base \( e \). |
| \( \log(x) \) | Common logarithm of \( x \). The logarithm of \( x \) to the base \( 10 \). |
| \( \log_a(x) \) | Logarith of \( x \) to the base \( a \), \( a \ne 1 \), \( a>1\). |
| \( \infty \) | Infinity |
| \( \alpha \) | The greek letter - alpha |
| \( \beta \) | The greek letter - beta |
| \( dom(f) \) | The domain of the relation \( f \) |
| \( rg(f) \) | The range of the relation \( f \) |
| \( \mathbb{R} \) | The set of all real numbers |
| \( \mathbb{Q} \) | The set of all rational numbers |
| \( \mathbb{Q^c} \) | The set of all irrational numbers |
| \( \mathbb{N} \) | The set of all natural numbers |
| \( \mathbb{Z} \) | The set of all integers |