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58 results
This lecture is part of an online graduate course on Galois theory. As an application of Galois theory, we prove Gauss's theorem ...
6,650 views
3 years ago
Constructing the heptagon! Or at least, why it's possible. For more math, subscribe to my channel: ...
184 views
How Gauss constructed the regular 17-sided polygon. Introductory remarks. For more math, subscribe to my channel: ...
537 views
Finding the fifth roots of unity. For more math, subscribe to my channel: https://www.youtube.com/jeffsuzuki1.
143 views
Periods and sums of powers of the roots of unity. For more math, subscribe to my channel: https://www.youtube.com/jeffsuzuki1.
214 views
via neusis Made with Geogebra - Adobe Illustrator - and Adobe Animate.
321 views
2 years ago
How to inscribe a regular heptagon in a circle: an approximate construction, and an exact one. For more math, subscribe to my ...
335 views
4 years ago
This lecture is part of an online course on Galois theory. This is an introductory lecture, giving an informal overview of Galois ...
124,700 views
A polygon with 16 sides can be formed into a genus 4 surface, a surface with 4 holes.
5,202 views
8 years ago
This lecture is part of an online course on Galois theory. We review some basic results about field extensions and algebraic ...
36,262 views
This lecture is part of an online algebraic geometry course on schemes, based on chapter II of "Algebraic geometry" by Hartshorne ...
13,201 views
This lecture is part of an online graduate course on Galois theory. We introduce cyclotomic polynomials, and use Frobenius ...
8,908 views
This lecture is part of an online graduate course on Galois theory. We define the norm and trace of a finite extension of fields.
5,010 views
This lecture is part of an online graduate course on Galois theory. We prove the main theorem of Galois theory, given a bijection ...
10,571 views
This lecture is part of an online graduate course on Galois theory. We define normal extensions of fields by three equivalent ...
13,005 views
This lecture is part of an online graduate course on Galois theory. We use Galois theory to give a (mostly) algebraic proof that the ...
7,182 views
This lecture is part of an online graduate course on Galois theory. We give several examples of Galois extensions, and work out ...
10,203 views
This lecture is part of an online course on commutative algebra, following the book "Commutative algebra with a view toward ...
2,216 views
Building a fully chorded Icosikaihenagon/21-gon out of wool. Backboard is 1200x1200mm notice board.
975 views
9 years ago
This lecture is part of an online graduate course on Galois theory. We show how to use Galois theory to solve cubic and quartic ...
5,187 views