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Geometry for elementary school
This note covers the following topics: Points, Lines, Constructing equilateral triangle, Copying a line segment, Constructing a triangle, The Side-Side-Side congruence theorem, Copying a triangle, Copying an angle, Bisecting an angle, The Side-Angle-Side congruence theorem, Bisecting a segment, Some impossible constructions, Pythagorean theorem, Parallel lines, Squares, A proof of irrationality, Fractals.
Author(s): Wikibooks.org
72 Pages 
Lecture Notes on Comparison Geometry
This note contains below topics, Solutions of Jacobi Equations, Model Spaces Hessian Cosine Law, Local Comparison Theorems, Global Toponogov Comparison Theorems, Appliction of Toponogov s Comparison Theorem, Manifolds of Nonnegative Curvature, CheegerGromoll Soul Theorem, CheegerGromoll Soul Conjecture, CheegerGromoll Splitting Theorem, CheegerGromoll Covering Theorem, BishopGromov Volume Comparison, GromovHausdorff Convergence of Metric Spaces, Alexandrov Spaces, GrovePeterson Homotopy Type Theorem.
Author(s): Xinze Li
265 Pages
Lecture Notes on Spin Geometry
This note contains below topics, and promote it to spin structures and spinor b undles over manifolds In, The precise analytical denitions will be given in, Indices indicating t he grading are always understood mod, The complex volume element is independent of the choice of basis.
Author(s): Konstantin Wernli
108 Pages
Lectures on generalized geometry
This note contains below topics, The Courant bracket Bfields and metrics, Spinors twists and skew torsion, Generalized complex manifolds, Generalized Kahler manifolds, Generalized holomorphic bundles, Holomorphic bundles and the Bfield action.
Author(s): Nigel Hitchin
52 Pages
Lectures on Finslerian Geometry
This note contains below topics, Calculus of variations, Review of differential calculus on Banach spaces, The minimum problem, EulerLagrange equations in finite dimension, Hamiltonian description, The Noether theorem, The Linear Sigma model, Hadamard s variation formula for the Green s function, Symplectic Geometry, Symplectic Manifolds, Symplectic form on the Cotangent Bundle of a Manifold, Finslerian Geometry, Finsler Metric, Formulas in Riemannian Geometry, Review of Tensor calculus, Locally Minkowski space.
Author(s): Oumar Wone
75 Pages
Lectures on Noncommutative Geometry
This note contains below topics, Morita equivalence, Derivations and Atiyah algebras, The Bar complex, Hochschild homology and cohomology, Poisson brackets and Gerstenhaber algebras, Deformation quantization, K ahler differentials, The HochschildKostantRosenberg Theorem, Noncommutative differential forms, Noncommutative Calculus, The Representation functor.
Author(s): Victor Ginzburg
124 Pages
Foundations of Geometry by David Hilbert
This PDF book covers the following topics related to Geometry, The Five Groups of Axioms, the Compatibility and Mutual Independence of the Axioms, the Theory of Proportion, the Theory of Plane Areas, Desarguess Theorem, Pascals Theorem, Geometrical Constructions Based Upon the Axioms IV.
Author(s): David Hilbert, Ph. D. Professor of Mathematics, University of Göttingen
105 Pages
This PDF book covers the following topics related to Geometry, Introduction, Construction of the Euclidean plane, Transformations, Tricks of the trade, Concurrence and collinearity, Circular reasoning, Triangle trivia, Quadrilaterals, Geometric inequalities, Inversive and hyperbolic geometry, Projective geometry.
Author(s): Kiran S. Kedlaya
142 Pages
This text is intended for a brief introductory course in plane geometry. It covers the topics from elementary geometry that are most likely to be required for more advanced mathematics courses. Topics covered includes, Lines Angles and Triangles, m Congruent Triangles, Quadrilaterals, Similar Triangles, Trigonometry of The Right Triangle, Area and Perimeter, Regular Polygons and Circles, Values of The Trigonometric Functions.
Author(s): Henry Africk
NA Pages