In differential geometry, a complete Riemannian manifold is called a Ricci soliton if, and only if, there exists a smooth vector field such that for some constant . Here is the Ricci curvature tensor and represents the Lie derivative. If there exists a function such that we call a gradient Ricci soliton and the soliton equation becomes Note that when or the above equations reduce to the Einstein equation. For this reason Ricci solitons are a generalization of Einstein manifolds. (Wikipedia).
This levitron manufactured by my friend İzzet Özgöçmen. We enjoyed playing with it.
From playlist Izzet Özgöçmen
il Large Hadron Collider (Italiano)
Una panoramica sul progetto LHC ed i suoi campi di ricerca.
From playlist Italiano
The History of Pasta and Types of Pasta in Italy
Ooh, pasta! It's so delicious, am I right? Ravioli, penne, you name it. But where does this dish come from? What kinds of pasta do Italians eat? Let's dig in! Script by Patrizia Farina, Professor of Italian at Western Connecticut State University and Purchase College. Watch the whole Ita
From playlist Italian
Heather Macbeth: Kähler-Ricci solitons on crepant resolutions of finite quotients of C^n
Abstract: By a gluing construction, we produce steady Kähler-Ricci solitons on equivariant crepant resolutions of ℂ^n/GCn/G, where GG is a finite subgroup of SU(n)SU(n), generalizing Cao’s construction of such a soliton on a resolution of ℂ^n/ℤnCn/Zn. This is joint work with Olivier Biquar
From playlist Algebraic and Complex Geometry
AWESOME antigravity electromagnetic levitator (explaining simply)
Physics levitron (science experiments)
From playlist ELECTROMAGNETISM
Richard Hamilton | The Poincare Conjecture | 2006
The Poincare Conjecture Richard Hamilton Columbia University, New York, USA https://www.mathunion.org/icm/icm-videos/icm-2006-videos-madrid-spain/icm-madrid-videos-22082006
From playlist Number Theory
AWESOME SUPERCONDUCTOR LEVITATION!!!
A quantum levitator it's a circular track of magnets above which a razor-thin disc magically levitates, seeming to defy the laws of physics. The key to the levitator is the disc, which is made of superconducting material sandwiched between layers of gold and sapphire crystal. A piece of fo
From playlist THERMODYNAMICS
Panagiota Daskalopoulos: Ancient solutions to geometric flows
Abstract: We will give a survey of recent research progress on ancient or eternal solutions to geometric flows such as the Ricci flow, the Mean Curvature flow and the Yamabe flow. We will address the classification of ancient solutions to parabolic equations as well as the construction of
From playlist Women at CIRM
Rigatoni Peperonata Recipe - Laura Vitale - Laura in the Kitchen Episode 561
To get this complete recipe with instructions and measurements, check out my website: http://www.LauraintheKitchen.com Instagram: http://www.instagram.com/mrsvitale Official Facebook Page: http://www.facebook.com/LauraintheKitchen Contact: Business@LauraintheKitchen.com Twitter: @Laura
From playlist Laura in the Kitchen: Main Course Italian Recipes | CosmoLearning Culinary
R. Bamler - Uniqueness of Weak Solutions to the Ricci Flow and Topological Applications 1
I will present recent work with Kleiner in which we verify two topological conjectures using Ricci flow. First, we classify the homotopy type of every 3-dimensional spherical space form. This proves the Generalized Smale Conjecture and gives an alternative proof of the Smale Conjecture, wh
From playlist Ecole d'été 2021 - Curvature Constraints and Spaces of Metrics
R. Bamler - Uniqueness of Weak Solutions to the Ricci Flow and Topological Applications 1 (vt)
I will present recent work with Kleiner in which we verify two topological conjectures using Ricci flow. First, we classify the homotopy type of every 3-dimensional spherical space form. This proves the Generalized Smale Conjecture and gives an alternative proof of the Smale Conjecture, wh
From playlist Ecole d'été 2021 - Curvature Constraints and Spaces of Metrics
R. Bamler - Uniqueness of Weak Solutions to the Ricci Flow and Topological Applications 3
I will present recent work with Kleiner in which we verify two topological conjectures using Ricci flow. First, we classify the homotopy type of every 3-dimensional spherical space form. This proves the Generalized Smale Conjecture and gives an alternative proof of the Smale Conjecture, wh
From playlist Ecole d'été 2021 - Curvature Constraints and Spaces of Metrics
R. Bamler - Uniqueness of Weak Solutions to the Ricci Flow and Topological Applications 3 (vt)
I will present recent work with Kleiner in which we verify two topological conjectures using Ricci flow. First, we classify the homotopy type of every 3-dimensional spherical space form. This proves the Generalized Smale Conjecture and gives an alternative proof of the Smale Conjecture, wh
From playlist Ecole d'été 2021 - Curvature Constraints and Spaces of Metrics
Italian food! Italian food is the best! Whether you are willing to admit it or not, this is the real reason you are here. You either want to go to Italy and eat all the food, or you want to order Italian food properly even in America or some other English-speaking land. Don't you worry, in
From playlist Italian
R. Bamler - Uniqueness of Weak Solutions to the Ricci Flow and Topological Applications 2
I will present recent work with Kleiner in which we verify two topological conjectures using Ricci flow. First, we classify the homotopy type of every 3-dimensional spherical space form. This proves the Generalized Smale Conjecture and gives an alternative proof of the Smale Conjecture, wh
From playlist Ecole d'été 2021 - Curvature Constraints and Spaces of Metrics
R. Bamler - Uniqueness of Weak Solutions to the Ricci Flow and Topological Applications 2 (vt)
I will present recent work with Kleiner in which we verify two topological conjectures using Ricci flow. First, we classify the homotopy type of every 3-dimensional spherical space form. This proves the Generalized Smale Conjecture and gives an alternative proof of the Smale Conjecture, wh
From playlist Ecole d'été 2021 - Curvature Constraints and Spaces of Metrics
The History of Pizza and Types of Pizza in Italy
Everybody loves pizza! It's the world's favorite food. But where does it come from? Italy, of course. But when? And how? And from whom? It's an interesting story! And also, what kinds of pizza do Italians like to eat? Let's talk about all things pizza! Script by Patrizia Farina, Professor
From playlist Italian
Panagiota Daskalopoulos: 1/3 Ancient Solutions to Geometric Flows [2017]
Ancient Solutions to Geometric Flows Speaker: Panagiota Daskalopoulos, Columbia University Date and Time: Tuesday, October 3, 2017 - 4:30pm to 5:30pm Location: Fields Institute, Room 230 Abstract: Some of the most important problems in geometricgeometric flowsflows are related to the un
From playlist Mathematics