A log metric
Posted: Tue Jan 08, 2019 11:05 am
Endow $(0, +\infty)$ with the following metric
$$d(x, y) = \left | \log \frac{x}{y} \right |$$
(i) Verify that $d$ is indeed a metric.
(ii) Is the sequence $a_n =\frac{1}{n}$ convergent under this metric? Give a brief explanation.
(iii) Examine if $(0, +\infty)$ is bounded under this metric.
$$d(x, y) = \left | \log \frac{x}{y} \right |$$
(i) Verify that $d$ is indeed a metric.
(ii) Is the sequence $a_n =\frac{1}{n}$ convergent under this metric? Give a brief explanation.
(iii) Examine if $(0, +\infty)$ is bounded under this metric.