Convex hulls | Computational geometry

Alpha shape

In computational geometry, an alpha shape, or α-shape, is a family of piecewise linear simple curves in the Euclidean plane associated with the shape of a finite set of points. They were first defined by . The alpha-shape associated with a set of points is a generalization of the concept of the convex hull, i.e. every convex hull is an alpha-shape but not every alpha shape is a convex hull. (Wikipedia).

Alpha shape
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What is an obtuse triangle

👉 Learn the essential definitions of triangles. A triangle is a polygon with three sides. Triangles are classified on the basis of their angles or on the basis of their side lengths. The classification of triangles on the bases of their angles are: acute, right and obtuse triangles. The cl

From playlist Types of Triangles and Their Properties

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What is an acute triangle

👉 Learn the essential definitions of triangles. A triangle is a polygon with three sides. Triangles are classified on the basis of their angles or on the basis of their side lengths. The classification of triangles on the bases of their angles are: acute, right and obtuse triangles. The cl

From playlist Types of Triangles and Their Properties

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What is an equilateral triangle

👉 Learn the essential definitions of triangles. A triangle is a polygon with three sides. Triangles are classified on the basis of their angles or on the basis of their side lengths. The classification of triangles on the bases of their angles are: acute, right and obtuse triangles. The cl

From playlist Types of Triangles and Their Properties

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What is an isosceles triangle

👉 Learn the essential definitions of triangles. A triangle is a polygon with three sides. Triangles are classified on the basis of their angles or on the basis of their side lengths. The classification of triangles on the bases of their angles are: acute, right and obtuse triangles. The cl

From playlist Types of Triangles and Their Properties

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How to find the composition of two areas by subtracting their areas

👉 Learn how to find the area and perimeter of composite shapes. A composite shape is a shape that is composed of different shapes. The area of a shape is the measure of the portion enclosed by the shape while the perimeter of a shape is the measure of the outline enclosing the shape. To f

From playlist Area and Perimeter

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Foldable Polyhedron 1

Delta-Star is a polyhedral object which I invented in 1996. The type of Delta-Star corresponds to Deltahedrons. It expands and shrinks. Especially highly symmetric tetrahedron,octahedron,icosahedron types and hexahedron,decahedron types can transform smoothly.

From playlist Handmade geometric toys

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Foldable Polyhedron 2

Delta-Star is a polyhedral object which I invented in 1996. The type of Delta-Star corresponds to Deltahedrons. It expands and shrinks.

From playlist Handmade geometric toys

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What is a right triangle

👉 Learn the essential definitions of triangles. A triangle is a polygon with three sides. Triangles are classified on the basis of their angles or on the basis of their side lengths. The classification of triangles on the bases of their angles are: acute, right and obtuse triangles. The cl

From playlist Types of Triangles and Their Properties

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What is a line bisector

👉 Learn the essential definitions of triangles. A triangle is a polygon with three sides. Triangles are classified on the basis of their angles or on the basis of their side lengths. The classification of triangles on the bases of their angles are: acute, right and obtuse triangles. The cl

From playlist Types of Triangles and Their Properties

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Seminar In the Analysis and Methods of PDE (SIAM PDE): Alberto Bressan

Title: On the optimal shape of tree roots and branches Date: Thursday, December 1, 2022, 11:30 am EDT Speaker: Alberto Bressan, Penn State University Moderator: Hermano Frid (IMPA, Brazil) Abstract: Living organisms come in an immense variety of shapes. In many cases one can expect that,

From playlist Seminar In the Analysis and Methods of PDE (SIAM PDE)

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Maciej Dołęga: "Random Young diagrams and the approximate factorization property"

Asymptotic Algebraic Combinatorics 2020 "Random Young diagrams and the approximate factorization property" Maciej Dołęga - Institute of Mathematics, Polish Academy of Sciences Abstract: We explain the concept of characters of the symmetric group with the approximate factorization propert

From playlist Asymptotic Algebraic Combinatorics 2020

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On minimizers and critical points for anisotropic isoperimetric problems - Robin Neumayer

Variational Methods in Geometry Seminar Topic: On minimizers and critical points for anisotropic isoperimetric problems Speaker: Robin Neumayer Affiliation: Member, School of Mathematics Date: February 19, 2019 For more video please visit http://video.ias.edu

From playlist Variational Methods in Geometry

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Cell Learning Theory - Seminar 2 - On AlphaFold

This seminar series is about computation and learning in cell. In this seminar David Li talks about AlphaFold, a neural network engineered by DeepMind to predict folding of proteins. The webpage for this seminar is https://metauni.org/posts/events/seminar-clt. You can join this seminar

From playlist Metauni

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On the Origin of Universal Cell Shape Variability in a Confluent Epithelial... by Saroj Kumar Nandi

DISCUSSION MEETING STATISTICAL PHYSICS: RECENT ADVANCES AND FUTURE DIRECTIONS (ONLINE) ORGANIZERS: Sakuntala Chatterjee (SNBNCBS, Kolkata), Kavita Jain (JNCASR, Bangalore) and Tridib Sadhu (TIFR, Mumbai) DATE: 14 February 2022 to 15 February 2022 VENUE: Online In the past few dec

From playlist Statistical Physics: Recent advances and Future directions (ONLINE) 2022

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MIT 3.60 | Lec 2b: Symmetry, Structure, Tensor Properties of Materials

Part 2: Introduction to Crystallography View the complete course at: http://ocw.mit.edu/3-60F05 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu

From playlist MIT 3.60 Symmetry, Structure & Tensor Properties of Material

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SVM from Scratch - Machine Learning Python (Support Vector Machine)

A from scratch implementation of SVM using the CVXOPT package in Python to solve the quadratic programming. Specifically implementation of soft margin SVM. To understand the theory (which is a bit challenging) I recommend reading the following: * http://cs229.stanford.edu/notes/cs229-note

From playlist Machine Learning Algorithms

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Applied topology 27: Evasion paths in mobile sensor networks, Part IV

Applied topology 27: Evasion paths in mobile sensor networks, Part IV Abstract: In a planar sensor network that remains connected, the time-varying alpha complex with weak rotation information determines if and only if an evasion path exists. It is unknown if the time-varying Cech complex

From playlist Applied Topology - Henry Adams - 2021

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Linear Algebra 2o2: Straight Talk - a Linear Combination Exercise

https://bit.ly/PavelPatreon https://lem.ma/LA - Linear Algebra on Lemma http://bit.ly/ITCYTNew - Dr. Grinfeld's Tensor Calculus textbook https://lem.ma/prep - Complete SAT Math Prep

From playlist Part 1 Linear Algebra: An In-Depth Introduction with a Focus on Applications

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What is a scalene triangle

👉 Learn the essential definitions of triangles. A triangle is a polygon with three sides. Triangles are classified on the basis of their angles or on the basis of their side lengths. The classification of triangles on the bases of their angles are: acute, right and obtuse triangles. The cl

From playlist Types of Triangles and Their Properties

Related pages

CGAL | Delaunay triangulation | Computational geometry | Convex hull | Real number | Simplicial complex | Euclidean plane | Beta skeleton | Green's function | Brillouin zone | Fermi level