| − | Riemmanian geometry is a non-euclidean geometric theory developed by mathematicians [[Bernhard Riemann]] and [[Carl Friedrich Gauss]], and was later used by [[Albert Einstein]] in formulating his General Theory of Relativity. | + | '''Riemmanian geometry''' is a non-euclidean geometric theory developed by mathematicians [[Bernhard Riemann]] and [[Carl Friedrich Gauss]], and was later used by [[Albert Einstein]] in formulating his General Theory of Relativity. |