Complex surfaces | Algebraic surfaces

Quartic surface

In mathematics, especially in algebraic geometry, a quartic surface is a surface defined by an equation of degree 4. More specifically there are two closely related types of quartic surface: affine and projective. An affine quartic surface is the solution set of an equation of the form where f is a polynomial of degree 4, such as . This is a surface in affine space A3. On the other hand, a projective quartic surface is a surface in projective space P3 of the same form, but now f is a homogeneous polynomial of 4 variables of degree 4, so for example . If the base field is or the surface is said to be real or complex respectively. One must be careful to distinguish between algebraic Riemann surfaces, which are in fact quartic curves over , and quartic surfaces over . For instance, the Klein quartic is a real surface given as a quartic curve over . If on the other hand the base field is finite, then it is said to be an arithmetic quartic surface. (Wikipedia).

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Quaternions EXPLAINED Briefly

This is a video I have been wanting to make for some time, in which I discuss what the quaternions are, as mathematical objects, and how we do calculations with them. In particular, we will see how the fundamental equation of the quaternions i^2=j^2=k^2=ijk=-1 easily generates the rule for

From playlist Quaternions

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https://github.com/timhutton/klein-quartic

From playlist Geometry

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From playlist Geometry

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From playlist Geometry

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From playlist Quadric, Surfaces, Cylindrical Coordinates and Spherical Coordinates

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From playlist The Riemann Sphere

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In math, it's usually possible to view an object or concept from many different (but equivalent) angles. In this video, we will see that the quaternions may be viewed as 4x4 real-valued matrices of a special form. What is interesting here is that if you know how to multiply matrices, you a

From playlist Quaternions

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From playlist Geometry

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From playlist Workshop on Homological Mirror Symmetry: Methods and Structures

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From playlist Arithmetic Geometry is ONline In Zoom, Everyone (AGONIZE)

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Persistence of the Brauer-Manin obstruction under field extension - Viray - Workshop 2 - CEB T2 2019

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From playlist Rational points on elliptic curves

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From playlist Algebraic and Complex Geometry

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From playlist Mathematics

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From playlist Combinatorial Algebraic Geometry: Tropical and Real (HYBRID)

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From playlist Twelve Lectures on Tropical Geometry by Bernd Sturmfels

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Source code and mesh files here: https://github.com/timhutton/klein-quartic

From playlist Geometry

Related pages

Cubic surface | Kummer surface | K3 surface | Projective space | Riemann surface | Surface (mathematics) | Affine space | Complex number | Dupin cyclide | Klein quartic | Mathematics | Real number | Algebraic geometry | Degree of a polynomial | Weddle surface | Plücker surface | Homogeneous polynomial