Source: wikibot/unfavorable-semicircle

= Unfavorable Semicircle
{wiki=Unfavorable_Semicircle}

The term "unfavorable semicircle" often relates to geometry or context in which a semicircle is used. One common interpretation occurs in the context of the **Argand plane** or complex analysis. In this context, an unfavorable semicircle typically refers to the semicircle in the complex plane that is not the targeted region for a particular mathematical construct, such as contour integration. When evaluating integrals using the residue theorem in complex analysis, for example, one might choose specific contours.