Let G be a semi-simple algebraic group without G₂-factors over an algebraically closed field k of characteristic p ≠ 2, 3, and suppose B is a Borel subgroup, $T ...

To construct the tangent to a curve at a certain point A, you draw a line that follows the general direction of the curve at that point. An example of this can be seen below. Once the tangent is found ...

When a relationship between two variables is defined by a curve it means that the gradient, or rate of change, is always varying. An average speed for a journey can be found from a distance-time graph ...