Foundations of geometry | Elementary geometry

Birkhoff's axioms

In 1932, G. D. Birkhoff created a set of four postulates of Euclidean geometry in the plane, sometimes referred to as Birkhoff's axioms. These postulates are all based on basic geometry that can be confirmed experimentally with a scale and protractor. Since the postulates build upon the real numbers, the approach is similar to a model-based introduction to Euclidean geometry. Birkhoff's axiom system was utilized in the secondary-school textbook by Birkhoff and Beatley.These axioms were also modified by the School Mathematics Study Group to provide a new standard for teaching high school geometry, known as SMSG axioms.A few other textbooks in the foundations of geometry use variants of Birkhoff's axioms. (Wikipedia).

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Zermelo Fraenkel Introduction

This lecture is part of an online course on the Zermelo Fraenkel axioms of set theory. This lecture gives an overview of the axioms, describes the von Neumann hierarchy, and sketches several approaches to interpreting the axioms (Platonism, von Neumann hierarchy, multiverse, formalism, pra

From playlist Zermelo Fraenkel axioms

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Set Theory (Part 2): ZFC Axioms

Please feel free to leave comments/questions on the video and practice problems below! In this video, I introduce some common axioms in set theory using the Zermelo-Fraenkel w/ choice (ZFC) system. Five out of nine ZFC axioms are covered and the remaining four will be introduced in their

From playlist Set Theory by Mathoma

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Axioms of Lie algebra theory

In this video I write down the axioms of Lie algebras and then discuss the defining anti-symmetric bilinear map (the Lie bracket) which is zero on the diagonal and fulfills the Jacobi identity. I'm following the compact book "Introduction to Lie Algebras" by Erdmann and Wildon. https://gi

From playlist Algebra

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From playlist Linear Algebra

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Zermelo Fraenkel Extensionality

This is part of a series of lectures on the Zermelo-Fraenkel axioms for set theory. In this lecture we discuss the axiom of extensionality, which says that two sets are equal if they have the same elements. For the other lectures in the course see https://www.youtube.com/playlist?list

From playlist Zermelo Fraenkel axioms

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[BOURBAKI 2019] Infinité d’hypersurfaces minimales en basses dimensions - Rivière - 15/06/19

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From playlist BOURBAKI - 2019

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Set Theory 1.1 : Axioms of Set Theory

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From playlist Set Theory

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One of the Zermelo- Fraenkel axioms, called axiom of choice, is remarkably controversial. It links to linear algebra and several paradoxes- find out what is so strange about it ! (00:22) - Math objects as sets (00:54) - What axioms we use ? (01:30) - Understanding axiom of choice (03:2

From playlist Something you did not know...

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All the Axioms of Mathematics

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From playlist Logic

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Progress on existence of minimal surfaces - Andre Neves

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From playlist Workshop on Mean Curvature and Regularity

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Lecture 5 | Topics in String Theory

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From playlist Lecture Collection | Topics in String Theory (Winter 2011)

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Abraham Robinson’s legacy in model theory and (...) - L. Van den Dries - Workshop 3 - CEB T1 2018

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From playlist 2018 - T1 - Model Theory, Combinatorics and Valued fields

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Dynamics in Dimension 3: Geometry of Birkhoff Sections

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From playlist Mathematics

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Joel Hass - Lecture 4 - Algorithms and complexity in the theory of knots and manifolds - 21/06/18

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From playlist Joel Hass - School on Low-Dimensional Geometry and Topology: Discrete and Algorithmic Aspects

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Ellipses of small eccentricity are determined by their Dirichlet... - Steven Morris Zelditch

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From playlist Mathematics

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Ergodicity of the Weil-Petersson geodesic flow (Lecture - 1) Keith Burns

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From playlist Geometry, Groups and Dynamics (GGD) - 2017

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From playlist Injective, Surjective, and Bijective Functions

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Pierre Dehornoy: Wich geodesic flows are left-handed?

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Related pages

Tarski's axioms | Euclidean geometry | Model theory | Foundations of geometry | Hilbert's axioms | Protractor | Real number | Geometry | Euclidean space | Continuous function