MDS 516.5

Wording: Natural sciences & mathematics Mathematics Geometry Projective Geometry

Dewmoji: 🔬➗⚫?

0 Computer science, information & general works 252,013 ℹ️	1 Philosophy & psychology 270,129 🧠	2 Religion 681,242 🙏	3 Society, government, & culture 1,328,382 👫	4 Language 209,883 💬	5 Natural sciences & mathematics 431,918 🔬	6 Applied science & technology 940,635 💡	7 Arts & recreation 1,031,850 🎨	8 Literature & rhetoric 1,436,736 📚	9 History & geography 837,760 🗺️
50 Science 35,266 🥼	51 Mathematics 82,055 ➗	52 Astronomy 25,356 🔭	53 Physics 44,008 🍎	54 Chemistry 28,260 ⚗️	55 Earth sciences; geology 36,663 🌎	56 Fossils & Dinosaurs 11,038 💀	57 Biology 55,751 🧬	58 Plants (Botany) 26,824 🌿	59 Animals 86,697 🐼
510 Mathematics / Graphs 22,359 ➗	511 General principles of mathematics 6,064 📐	512 Algebra 9,891 +	513 Arithmetic 6,819 🔢	514 Topology 2,470 🍩	515 Analysis 11,784 Σ	516 Geometry 6,280 ⚫	517 [Formerly: Calculus] 1,410	518 Numerical analysis 1,027 💻	519 Probabilities and applied mathematics 13,950 📊
516.0 Geometry 377	516.1 General Geometry 1,411	516.2 Euclidean geometry 578	516.3 Analytic Geometry 1,918	516.4 Affine Geometry 21	516.5 Projective Geometry 121	516.6 Descriptive Geometry 27	516.7 27	516.8 Quaternions: calculus of direction and position 36	516.9 Non Euclidean Geometry 94
516.50	516.51 Systems of coordinates 2	516.52 Abridged notation	516.53 Conics	516.54 Higher plane curvs 2	516.55 Poles and polars; Reciprocal polars 3	516.56 Harmonic and anharmonic properties 3	516.57 Method of projection 18	516.58 Quadric surfaces: spheroconics, curvs of double curvatures	516.59 Surfaces of higher order: cubics