Category:Discontinuities of the First Kind
Jump to navigation
Jump to search
This category contains results about Discontinuities of the First Kind.
Definitions specific to this category can be found in Definitions/Discontinuities of the First Kind.
Let $X$ be an open subset of $\R$.
Let $f: X \to Y$ be a real function.
Let $f$ be discontinuous at some point $c \in X$.
Definition 1
$c$ is known as a discontinuity of the first kind of $f$ if and only if:
- $\ds \lim_{x \mathop \to c^-} \map f x$ and $\ds \lim_{x \mathop \to c^+} \map f x$ exist
where $\ds \lim_{x \mathop \to c^-} \map f x$ and $\ds \lim_{x \mathop \to c^+} \map f x$ denote the limit from the left and limit from the right at $c$ respectively.
Definition 2
$c$ is known as a discontinuity of the first kind of $f$ if and only if either:
- $c$ is a jump discontinuity
or:
- $c$ is a removable discontinuity.
This category currently contains no pages or media.