General topology | Trees (topology) | Topological spaces
In mathematics, a hedgehog space is a topological space consisting of a set of spines joined at a point. For any cardinal number , the -hedgehog space is formed by taking the disjoint union of real unit intervals identified at the origin (though its topology is not the quotient topology, but that defined by the metric below). Each unit interval is referred to as one of the hedgehog's spines. A -hedgehog space is sometimes called a hedgehog space of spininess . The hedgehog space is a metric space, when endowed with the hedgehog metric if and lie in the same spine, and by if and lie in different spines. Although their disjoint union makes the origins of the intervals distinct, the metric makes them equivalent by assigning them 0 distance. Hedgehog spaces are examples of real trees. (Wikipedia).
Intersection of Planes on Geogebra
In this video, we look at a strategy for finding the intersection of planes on Geogebra.
From playlist Geogebra
A very quick demo of how to access the 2D and 3D calculator on Geogebra.
From playlist Geogebra
Area of a Rhombus: Without Words
GeoGebra Resource Link: https://www.geogebra.org/m/acfbyxaw
From playlist Geometry: Dynamic Interactives!
What is a Bézier curve? Programmers use them everyday for graphic design, animation timing, SVG, and more. #shorts #animation #programming Animated Bézier https://www.jasondavies.com/animated-bezier/
From playlist CS101
4-Way Tunnel with SQUARE Openings
Created in GeoGebra Augmented Reality. How can we mathematically show that each opening IS indeed a SQUARE?
From playlist GeoGebra Augmented Reality Demos (Older iOS App)
Geogebra - Restricting a Slider
In this video we restrict aspects of the GeoGebra applet to help students discover an answer on their own
From playlist Geogebra
Strange Circles | Nathan Dalaklis
Hedgehog spaces and, more generally, metrics/distance functions illustrate what I meant last week when I said a definition of a circle based on distance is ambiguous. Using these ideas, I thought I would go ahead and show you why, and then leave you with a circle and see if you could figur
From playlist The New CHALKboard
A fractal maze. Obviously I know exactly where I'm going, and don't get lost at any point... Fractal rendered in Mandelbulber Composited in HitFilm #Fractal #Maze
From playlist Nerdy Rodent Uploads!
Simple models of Symmetry Protected Topological phases
Simple models of Symmetry Protected Topological phases and Symmetry Enriched Topological phases of bosons in two and three dimensions Discussion Meeting: Quantum entanglement in macroscopic matter URL: http://www.icts.res.in/discussion_meeting/QEM2015/ Dates: Monday 12 Jan, 2015 - Friday
From playlist Discussion Meeting: Quantum entanglement in macroscopic matter
Hedgehogs! What, Where, and How
Jessi introduces what hedgehogs are, where they came from, when they starting living with humans, and how to take care of them as pets. *Gloves are not recommended for normal interactions with hedgies. Jessi used gloves during this video because Groucho's quills are extra sharp and Jessi
From playlist What, Where, and How
Pet YouTuber Reacts to PET ADS On Craigslist
Thanks to Kitten Match for sponsoring today's video. Kitten Match is available on both Android and iOS. Download the game and join the Hello Kitty event for FREE here: http://bit.ly/KittenMatch The Hello Kitty build is only available in South Korea, Japan, the United States, the United Ki
From playlist Pet YouTuber Reacts | Emzotic
From organizational principles of Development to the morphospace by Fernando Casares
Program ICTP - ICTS Winter School on Quantitative Systems Biology ORGANIZERS: Buzz Baum, Guillaume Salbreux, Stefano Di Talia and Vijaykumar Krishnamurthy DATE: 03 December 2019 to 20 December 2019 VENUE: Ramanujan Lecture Hall, ICTS Bangalore The development of an organism from a sin
From playlist Winter School on Quantitative Systems Biology: Quantitative Approaches in Ecosystem Ecology 2020
Constructing the Wallace-Simson Line
From playlist GeoGebra Geometry
Meet and Greet: Tickles the Hedgehog!
Meet Tickles the hedgehog! She's adorable and grumpy and loves to push things off edges. She also poops... a lot. Our Video Sponsors: Donald Eckels Sean Guthrie Daniel Lumley Miya Chong Xin Ye Katie Fancher Katie McLam Steffen W. Bitoku Farrago Hammond Jessica R Sullivan Abigail Beales B
From playlist Meet and Greets
Saturn's Super-Sized Storm! - The Countdown #14
SUBSCRIBE, future astronauts: http://goo.gl/bRbj4 THE TOP 5 are listed BELOW!! CLICK HERE to learn more about this week's Top 5: Inflatable Space Station Monkey Launch Lunar Hedgehogs Martian Groundwater Saturn's Super-Sized Storm --------------- THE TOP 5: ----------------- Watch more
From playlist The Countdown
Topological spin crystals by itinerant frustration by Yukitoshi Motome
PROGRAM FRUSTRATED METALS AND INSULATORS (HYBRID) ORGANIZERS Federico Becca (University of Trieste, Italy), Subhro Bhattacharjee (ICTS-TIFR, India), Yasir Iqbal (IIT Madras, India), Bella Lake (Helmholtz-Zentrum Berlin für Materialien und Energie, Germany), Yogesh Singh (IISER Mohali, In
From playlist FRUSTRATED METALS AND INSULATORS (HYBRID, 2022)
Molecule Architecture: SciShow Talk Show with Dr. Orion Berryman
Dr. Orion Berryman talks with Hank about the cool chemistry going on in his lab, and Jessi from Animal Wonders brings in Prickle the Hedgehog! Animal Wonders Montana: https://www.youtube.com/animalwondersmontana We're conducting a survey of our viewers! If you have time, please give us f
From playlist SciShow Talk Show
Ayelet Heimowitz - Center of Mass Alignment for Noisy Tomographic Projections - IPAM at UCLA
Recorded 17 November 2022. Ayelet Heimowitz of Ariel University presents "Center of Mass Alignment for Noisy Tomographic Projections" at IPAM's Cryo-Electron Microscopy and Beyond Workshop. Abstract: Under the weak-phase object approximation, the center of mass of a 3-D macromolecule is pr
From playlist 2022 Cryo-Electron Microscopy and Beyond
mapping the presence of a laser beam inside a maze - HD render
00:00 : intro 01:00 : casual explanations 02:30 : the mapping 04:50 : the map 07:05 : bonus : ai interpolation
From playlist Mazes