![History of Mathematics: Ptolemy`s Theorem](http://s1.studyres.com/store/data/005023963_1-3cb8fc3c02955b99f7ccbfc5afef2019-300x300.png)
10.6 Day 1: Date: ______ Geometry Congruent circles have
... Several relationships between chords, arcs, and the central angles of a circle are listed below. The converses of these theorems are also true. Theorem 12-4 ...
... Several relationships between chords, arcs, and the central angles of a circle are listed below. The converses of these theorems are also true. Theorem 12-4 ...
Riemann–Roch theorem
![](https://commons.wikimedia.org/wiki/Special:FilePath/Triple_torus_illustration.png?width=300)
The Riemann–Roch theorem is an important theorem in mathematics, specifically in complex analysis and algebraic geometry, for the computation of the dimension of the space of meromorphic functions with prescribed zeroes and allowed poles. It relates the complex analysis of a connected compact Riemann surface with the surface's purely topological genus g, in a way that can be carried over into purely algebraic settings.Initially proved as Riemann's inequality by Riemann (1857), the theorem reached its definitive form for Riemann surfaces after work of Riemann's short-lived student Gustav Roch (1865). It was later generalized to algebraic curves, to higher-dimensional varieties and beyond.