# User:Bert Niehaus/Wiki2Reveal

## Purpose of the Document

This is a Audio slides Wiki2Reveal Test Page that is used check converting a Wiki page "on the fly" into a reveal presentation.

Audio Comments in the text can be used

• to play audio samples in the reveal presentation

Now a Rock Beat

for drums

## Splitting Slide with Audio

This slide is splitted by audio sample, first Accordion sound

Press play on audio player and hear the accordion sound

Again the Rock Beat for drums

### Inline Math Expression in Slides

The condition that U be simply connected means that U has no "holes" or, in homotopy terms, that the fundamental group of U is trivial; for instance, every open disk ${\displaystyle U=\{z:|z-z_{0}| qualifies. The condition is crucial; consider

### Block Math Expression in Slides

${\displaystyle \gamma (t)=e^{it}\quad t\in \left[0,2\pi \right]}$

which traces out the unit circle, and then the path integral

${\displaystyle \oint _{\gamma }{\frac {1}{z}}\,dz=\int _{0}^{2\pi }{ie^{it} \over e^{it}}\,dt=\int _{0}^{2\pi }i\,dt=2\pi i}$

is non-zero; the Cauchy integral theorem does not apply here since ${\displaystyle f(z)=1/z}$ is not defined at ${\displaystyle z=0}$.